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</div> <div class="pre-content heading-holder"> <div class="page-heading"> <h1 id="firstHeading" class="firstHeading mw-first-heading">Mount Unzen</h1> <div class="tagline"></div> </div> <ul id="p-associated-pages" class="minerva__tab-container"> <li class="minerva__tab selected mw-list-item"> <a class="minerva__tab-text" href="/wiki/Mount_Unzen" rel="" data-event-name="tabs.main">Article</a> </li> <li class="minerva__tab mw-list-item"> <a class="minerva__tab-text" href="/wiki/Talk:Mount_Unzen" rel="discussion" data-event-name="tabs.talk">Talk</a> </li> </ul> <nav class="page-actions-menu"> <ul id="p-views" class="page-actions-menu__list"> <li id="language-selector" class="page-actions-menu__list-item"> <a role="button" href="#p-lang" data-mw="interface" data-event-name="menu.languages" title="Language" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet language-selector"> Language </a> </li> <li id="page-actions-watch" class="page-actions-menu__list-item"> <a role="button" id="ca-watch" href="/w/index.php?title=Special:UserLogin&returnto=Mount+Unzen" data-event-name="menu.watch" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet menu__item--page-actions-watch"> Watch </a> </li> <li id="page-actions-edit" class="page-actions-menu__list-item"> <a role="button" id="ca-edit" href="/w/index.php?title=Mount_Unzen&action=edit" data-event-name="menu.edit" data-mw="interface" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet edit-page menu__item--page-actions-edit"> Edit </a> </li> </ul> </nav>  <div id="mw-content-subtitle"></div> </div> <div id="bodyContent" class="content"> <div id="mw-content-text" class="mw-body-content"><script>function mfTempOpenSection(id){var block=document.getElementById("mf-section-"+id);block.className+=" open-block";block.previousSibling.className+=" open-block";}</script><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><section class="mf-section-0" id="mf-section-0"> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">"Unzen" redirects here. For the city, see <a href="/wiki/Unzen,_Nagasaki" title="Unzen, Nagasaki">Unzen, Nagasaki</a>.</div> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style>Mount Unzen (雲仙岳, Unzen-dake) is an active <a href="/wiki/Volcanic_group" title="Volcanic group">volcanic group</a> of several overlapping <a href="/wiki/Stratovolcano" title="Stratovolcano">stratovolcanoes</a>, near the city of <a href="/wiki/Shimabara,_Nagasaki" title="Shimabara, Nagasaki">Shimabara, Nagasaki</a> on the island of <a href="/wiki/Kyushu" title="Kyushu">Kyushu</a>, Japan's southernmost main island. <table class="infobox vcard" style="width:24.5em; line-height:1.5em;"><tbody><tr><th colspan="2" class="infobox-above fn org" style="background-color: #E7DCC3;color:#000;">Mount Unzen</th></tr><tr><td colspan="2" class="infobox-image" style="padding: 0.3em 0.2em 0.2em 0.2em;"><a href="/wiki/File:Unzen_pyroclastic_and_lahar_deposits.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3e/Unzen_pyroclastic_and_lahar_deposits.jpg/272px-Unzen_pyroclastic_and_lahar_deposits.jpg" decoding="async" width="272" height="170" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3e/Unzen_pyroclastic_and_lahar_deposits.jpg/408px-Unzen_pyroclastic_and_lahar_deposits.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3e/Unzen_pyroclastic_and_lahar_deposits.jpg/544px-Unzen_pyroclastic_and_lahar_deposits.jpg 2x" data-file-width="800" data-file-height="500"></a><div class="infobox-caption" style="padding: 0.2em 0em;">Mt. Unzen, showing extensive <a href="/wiki/Pyroclastic_flow" title="Pyroclastic flow">pyroclastic flow</a> and <a href="/wiki/Lahar" title="Lahar">lahar</a> deposits</div></td></tr><tr><th colspan="2" class="infobox-header" style="background-color: #E7DCC3;color:#000;">Highest point</th></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Summit" title="Summit">Elevation</a></th><td class="infobox-data">1,483 m (4,865 ft)<a href="#cite_note-1">[1]</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Topographic_prominence" title="Topographic prominence">Prominence</a></th><td class="infobox-data">1,465 m (4,806 ft)<a href="#cite_note-2">[2]</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Lists_of_mountains" title="Lists of mountains">Listing</a></th><td class="infobox-data category">Ribu</td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Geographic_coordinate_system" title="Geographic coordinate system">Coordinates</a></th><td class="infobox-data"><style data-mw-deduplicate="TemplateStyles:r1156832818">.mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-parser-output .geo-multi-punct,.mw-parser-output .geo-inline-hidden{display:none}.mw-parser-output .longitude,.mw-parser-output .latitude{white-space:nowrap}</style><a class="external text" href="https://geohack.toolforge.org/geohack.php?pagename=Mount_Unzen&params=32_45_41_N_130_17_55_E_type:mountain_region:JP_scale:100000">32°45′41″N 130°17′55″E / 32.76139°N 130.29861°E / 32.76139; 130.29861</a></td></tr><tr><th colspan="2" class="infobox-header" style="background-color: #E7DCC3;color:#000;">Geography</th></tr><tr><td colspan="2" class="infobox-full-data"><div style="padding:0.2em 0.2em 0.5em 0.2em;"><div class="switcher-container"><style data-mw-deduplicate="TemplateStyles:r1238443738">.mw-parser-output .locmap .od{position:absolute}.mw-parser-output .locmap .id{position:absolute;line-height:0}.mw-parser-output .locmap .l0{font-size:0;position:absolute}.mw-parser-output .locmap .pv{line-height:110%;position:absolute;text-align:center}.mw-parser-output .locmap .pl{line-height:110%;position:absolute;top:-0.75em;text-align:right}.mw-parser-output .locmap .pr{line-height:110%;position:absolute;top:-0.75em;text-align:left}.mw-parser-output .locmap .pv>div{display:inline;padding:1px}.mw-parser-output .locmap .pl>div{display:inline;padding:1px;float:right}.mw-parser-output .locmap .pr>div{display:inline;padding:1px;float:left}@media screen{html.skin-theme-clientpref-night .mw-parser-output .od,html.skin-theme-clientpref-night .mw-parser-output .od .pv>div,html.skin-theme-clientpref-night .mw-parser-output .od .pl>div,html.skin-theme-clientpref-night .mw-parser-output .od .pr>div{background:#fff!important;color:#000!important}html.skin-theme-clientpref-night .mw-parser-output .locmap{filter:grayscale(0.6)}html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data .locmap div{background:transparent!important}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .locmap{filter:grayscale(0.6)}html.skin-theme-clientpref-os .mw-parser-output .od,html.skin-theme-clientpref-os .mw-parser-output .od .pv>div,html.skin-theme-clientpref-os .mw-parser-output .od .pl>div,html.skin-theme-clientpref-os .mw-parser-output .od .pr>div{background:white!important;color:#000!important}html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data .locmap div{background:transparent!important}}</style><div class="center"><div class="locmap" style="width:272px;float:none;clear:both;margin-left:auto;margin-right:auto"><div style="width:272px;padding:0"><div style="position:relative;width:272px"><a href="/wiki/File:Japan_natural_location_map_with_side_map_of_the_Ryukyu_Islands.jpg" class="mw-file-description" title="Mount Unzen is located in Japan"><img alt="Mount Unzen is located in Japan" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7e/Japan_natural_location_map_with_side_map_of_the_Ryukyu_Islands.jpg/272px-Japan_natural_location_map_with_side_map_of_the_Ryukyu_Islands.jpg" decoding="async" width="272" height="246" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7e/Japan_natural_location_map_with_side_map_of_the_Ryukyu_Islands.jpg/408px-Japan_natural_location_map_with_side_map_of_the_Ryukyu_Islands.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7e/Japan_natural_location_map_with_side_map_of_the_Ryukyu_Islands.jpg/544px-Japan_natural_location_map_with_side_map_of_the_Ryukyu_Islands.jpg 2x" data-file-width="2497" data-file-height="2256"></a><div class="od notheme" style="top:82.693%;left:9.789%;font-size:91%"><div class="id" style="left:-8px;top:-8px"><img alt="Mount Unzen" src="//upload.wikimedia.org/wikipedia/en/thumb/3/39/Red_triangle_with_thick_white_border.svg/16px-Red_triangle_with_thick_white_border.svg.png" decoding="async" width="16" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/3/39/Red_triangle_with_thick_white_border.svg/24px-Red_triangle_with_thick_white_border.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/3/39/Red_triangle_with_thick_white_border.svg/32px-Red_triangle_with_thick_white_border.svg.png 2x" data-file-width="270" data-file-height="240"></div><div class="pr" style="width:6em;left:9px"><div>Mount Unzen</div></div></div></div><div style="padding-top:0.2em"><a href="/wiki/Unzen,_Nagasaki" title="Unzen, Nagasaki">Unzen, Nagasaki</a>, <a href="/wiki/Kyushu" title="Kyushu">Kyushu</a>, Japan</div>Show map of Japan</div></div></div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238443738"><div class="center"><div class="locmap" style="width:272px;float:none;clear:both;margin-left:auto;margin-right:auto"><div style="width:272px;padding:0"><div style="position:relative;width:272px"><a href="/wiki/File:Topographic_northern_kyushu.png" class="mw-file-description" title="Mount Unzen is located in Kyushu"><img alt="Mount Unzen is located in Kyushu" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/de/Topographic_northern_kyushu.png/272px-Topographic_northern_kyushu.png" decoding="async" width="272" height="202" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/de/Topographic_northern_kyushu.png/408px-Topographic_northern_kyushu.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/de/Topographic_northern_kyushu.png/544px-Topographic_northern_kyushu.png 2x" data-file-width="600" data-file-height="445"></a><div class="od notheme" style="top:80.301%;left:25.647%;font-size:91%"><div class="id" style="left:-8px;top:-8px"><img alt="Mount Unzen" src="//upload.wikimedia.org/wikipedia/en/thumb/3/39/Red_triangle_with_thick_white_border.svg/16px-Red_triangle_with_thick_white_border.svg.png" decoding="async" width="16" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/3/39/Red_triangle_with_thick_white_border.svg/24px-Red_triangle_with_thick_white_border.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/3/39/Red_triangle_with_thick_white_border.svg/32px-Red_triangle_with_thick_white_border.svg.png 2x" data-file-width="270" data-file-height="240"></div><div class="pr" style="width:6em;left:9px"><div>Mount Unzen</div></div></div></div><div style="padding-top:0.2em">Mount Unzen (Kyushu)</div>Show map of Kyushu</div></div></div></div> </div></td></tr><tr><th colspan="2" class="infobox-header" style="background-color: #E7DCC3;color:#000;">Geology</th></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Geological_time_scale" class="mw-redirect" title="Geological time scale">Rock age</a></th><td class="infobox-data">Oldest 500 kyr<a href="#cite_note-3">[3]</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/List_of_mountain_types" title="List of mountain types">Mountain type</a></th><td class="infobox-data"><a href="/wiki/Volcanic_group" title="Volcanic group">Complex</a> <a href="/wiki/Stratovolcano" title="Stratovolcano">stratovolcano</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Types_of_volcanic_eruptions" title="Types of volcanic eruptions">Last eruption</a></th><td class="infobox-data">February to May 1996</td></tr></tbody></table> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Unzen_Volacno_Relief_Map,_SRTM-1.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9e/Unzen_Volacno_Relief_Map%2C_SRTM-1.jpg/220px-Unzen_Volacno_Relief_Map%2C_SRTM-1.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9e/Unzen_Volacno_Relief_Map%2C_SRTM-1.jpg/330px-Unzen_Volacno_Relief_Map%2C_SRTM-1.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9e/Unzen_Volacno_Relief_Map%2C_SRTM-1.jpg/440px-Unzen_Volacno_Relief_Map%2C_SRTM-1.jpg 2x" data-file-width="1600" data-file-height="1200"></a><figcaption>Relief map of Mount Unzen</figcaption></figure> In 1792, the collapse of one of its several <a href="/wiki/Lava_dome" title="Lava dome">lava domes</a> triggered a <a href="/wiki/1792_Unzen_earthquake_and_tsunami" class="mw-redirect" title="1792 Unzen earthquake and tsunami">megatsunami</a> that killed 14,524 people in Japan's worst volcanic-related <a href="/wiki/Disaster" title="Disaster">disaster</a>. The <a href="/wiki/Volcano" title="Volcano">volcano</a> was most recently active from 1990 to 1995, and a large eruption in 1991 generated a <a href="/wiki/Pyroclastic_flow" title="Pyroclastic flow">pyroclastic flow</a> that killed 43 people, including three <a href="/wiki/Volcanologist" title="Volcanologist">volcanologists</a>. Its highest peaks are Fugen-dake (普賢岳) at 1,359 metres (4,459 ft) and Heisei-shinzan (平成新山) at 1,486 metres (4,875 ft). The latter emerged during the eruptions of the early, eponymous <a href="/wiki/Heisei" class="mw-redirect" title="Heisei">Heisei era</a> (1989–2019). <div id="toc" class="toc" role="navigation" aria-labelledby="mw-toc-heading"><input type="checkbox" role="button" id="toctogglecheckbox" class="toctogglecheckbox" style="display:none"><div class="toctitle" lang="en" dir="ltr"><h2 id="mw-toc-heading">Contents</h2><label class="toctogglelabel" for="toctogglecheckbox"></label></div> <ul> <li class="toclevel-1 tocsection-1"><a href="#Overview">1 Overview</a></li> <li class="toclevel-1 tocsection-2"><a href="#Eruptive_history">2 Eruptive history</a> <ul> <li class="toclevel-2 tocsection-3"><a href="#Prehistoric_to_October_1990">2.1 Prehistoric to October 1990</a></li> <li class="toclevel-2 tocsection-4"><a href="#November_1990_to_May_1991">2.2 November 1990 to May 1991</a></li> <li class="toclevel-2 tocsection-5"><a href="#June_3,_1991_eruption_disaster">2.3 June 3, 1991 eruption disaster</a> <ul> <li class="toclevel-3 tocsection-6"><a href="#Before_the_eruption">2.3.1 Before the eruption</a></li> <li class="toclevel-3 tocsection-7"><a href="#Eruption_and_Pyroclastic_flows">2.3.2 Eruption and Pyroclastic flows</a></li> <li class="toclevel-3 tocsection-8"><a href="#Effects_and_aftermath">2.3.3 Effects and aftermath</a></li> </ul> </li> </ul> </li> <li class="toclevel-1 tocsection-9"><a href="#Eruptions_after_June_3,_1991">3 Eruptions after June 3, 1991</a></li> <li class="toclevel-1 tocsection-10"><a href="#Current_status_(post-1995)">4 Current status (post-1995)</a> <ul> <li class="toclevel-2 tocsection-11"><a href="#Effects_of_the_Heisei_eruptions/restoration_work">4.1 Effects of the Heisei eruptions/restoration work</a></li> </ul> </li> <li class="toclevel-1 tocsection-12"><a href="#Unzen_Scientific_Drilling_Project_(USDP)">5 Unzen Scientific Drilling Project (USDP)</a></li> <li class="toclevel-1 tocsection-13"><a href="#Rivers">6 Rivers</a></li> <li class="toclevel-1 tocsection-14"><a href="#Climate">7 Climate</a></li> <li class="toclevel-1 tocsection-15"><a href="#See_also">8 See also</a></li> <li class="toclevel-1 tocsection-16"><a href="#References">9 References</a></li> <li class="toclevel-1 tocsection-17"><a href="#Bibliography">10 Bibliography</a></li> <li class="toclevel-1 tocsection-18"><a href="#External_links">11 External links</a></li> </ul> </div> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(1)"><h2 id="Overview">Overview</h2> <a role="button" href="/w/index.php?title=Mount_Unzen&action=edit&section=1" title="Edit section: Overview" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-1 collapsible-block" id="mf-section-1"> Mount Unzen (or Unzen-dake) rises in the central part of the Shimabara Peninsula, Nagasaki Prefecture. It is located on the outer ring of the Chijiwa Caldera centering on Tachibana Bay in the west of the peninsula. It consists of a total of more than 20 mountains, however, the complexity in the shape of Unzen-dake was expressed by various numbers (such as Mitake Goho/Mimine Godake as "24th peak", or Yatsuha as "36th peak"). As a result, the usage of only eight mountains (sometimes three mountains) was coined in a narrow sense, but historically it is a name that refers to the entire mountain range towering over the sea. It is often confused with the name of the oldest peak, Fugen-dake.[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] Surrounding the highest peak of Heisei-shinzan (1,483 m (4,865 ft)), are Fugen-dake (1,359 m (4,459 ft)), Kunimi-dake (1,347 m (4,419 ft)), Myoken-dake (1,333 m (4,373 ft)), Nodake (1,142 m (3,747 ft)), Kusenbedake (1,062 m (3,484 ft)), and Yadake (943 m (3,094 ft)). Fugen-dake and Heisei-shinzan derive magma from the Chijiwa Caldera. In other words, it is supplied from a magma chamber beneath Tachibana Bay off Obama Onsen. The main peak is Fugen-dake, but the volcanic activity from 1990 (Heisei 2) to 1995 (Heisei 7) made Heisei-shinzan, which was higher in elevation. Heisei-shinzan is also the highest peak in Nagasaki Prefecture. Unzen originally read "onsen" in the notation of a <a href="/wiki/Hot_spring" title="Hot spring">hot spring</a>, but it was changed to the current notation when it was designated as a national park. An army radar base was built near the summit of Fugen-dake during the Pacific War, where about 100 people were stationed.<a href="#cite_note-4">[4]</a> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(2)"><h2 id="Eruptive_history">Eruptive history</h2> <a role="button" href="/w/index.php?title=Mount_Unzen&action=edit&section=2" title="Edit section: Eruptive history" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-2 collapsible-block" id="mf-section-2"> <div class="mw-heading mw-heading3"><h3 id="Prehistoric_to_October_1990">Prehistoric to October 1990</h3> <a role="button" href="/w/index.php?title=Mount_Unzen&action=edit&section=3" title="Edit section: Prehistoric to October 1990" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <style data-mw-deduplicate="TemplateStyles:r1251242444">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px solid #f28500}.mw-parser-output .ambox-style{border-left:10px solid #fc3}.mw-parser-output .ambox-move{border-left:10px solid #9932cc}.mw-parser-output .ambox-protection{border-left:10px solid #a2a9b1}.mw-parser-output .ambox .mbox-text{border:none;padding:0.25em 0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}@media print{body.ns-0 .mw-parser-output .ambox{display:none!important}}</style><table class="box-More_citations_needed_section plainlinks metadata ambox ambox-content ambox-Refimprove" role="presentation"><tbody><tr><td class="mbox-text"><div class="mbox-text-span">This section needs additional citations for <a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability">verification</a>. Please help <a href="/wiki/Special:EditPage/Mount_Unzen" title="Special:EditPage/Mount Unzen">improve this article</a> by <a href="/wiki/Help:Referencing_for_beginners" title="Help:Referencing for beginners">adding citations to reliable sources</a> in this section. Unsourced material may be challenged and removed. (June 2013) (<a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a>)</div></td></tr></tbody></table> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Fugendake-and-heiseishinzan.JPG" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/Fugendake-and-heiseishinzan.JPG/220px-Fugendake-and-heiseishinzan.JPG" decoding="async" width="220" height="165" class="mw-file-element" data-file-width="2400" data-file-height="1800"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 165px;" data-mw-src="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/Fugendake-and-heiseishinzan.JPG/220px-Fugendake-and-heiseishinzan.JPG" data-width="220" data-height="165" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/Fugendake-and-heiseishinzan.JPG/330px-Fugendake-and-heiseishinzan.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/99/Fugendake-and-heiseishinzan.JPG/440px-Fugendake-and-heiseishinzan.JPG 2x" data-class="mw-file-element"> </a><figcaption>In the distance, Mt. Unzen's Fugen-dake (left) and Heisei-Shinzan peaks, the latter a lava dome that emerged during the 1990–1995 eruption, seen from Nita Pass in November 2005</figcaption></figure> Mount Unzen is part of the <a href="/wiki/Shimabara_Peninsula" title="Shimabara Peninsula">Shimabara Peninsula</a>, which has seen extensive volcanism over millions of years. The oldest volcanic deposits in the region date from over 6 million years ago, and extensive eruptions occurred over the whole peninsula between 2.5 and 0.5 million years ago. The origins of the Unzen complex are traced to the formation of a <a href="/wiki/Graben" title="Graben">graben</a> through crustal faulting. This caused parts of the peninsula to subside by up to 1,000 metres (3,300 ft) below sea level and may have caused eruptive activity to localize at one site inside the graben. Eruptions of <a href="/wiki/Dacite" title="Dacite">dacitic</a> lava began from a site slightly to the south of today's Mount Unzen and migrated north over time. The volcano rapidly grew during its first 200,000 years, forming a very large cone. Later eruptions over the following 150,000 years filled in much of the graben. Initially, activity was dominated by blocky <a href="/wiki/Andesite" title="Andesite">andesitic</a> lava and ash flows, changing to <a href="/wiki/Dacite" title="Dacite">dacitic</a> <a href="/wiki/Pumice" title="Pumice">pumice</a> flows and airfall deposits from 500,000 to 400,000 years ago. The period from 400,000 to 300,000 years ago saw the emplacement of large areas of <a href="/wiki/Pyroclastic_flow" title="Pyroclastic flow">pyroclastic flow</a> and lahar deposits; these form the major part of the volcanic fan surrounding the volcano. Beginning 300,000 to 150,000 years ago, thick <a href="/wiki/Phreatic_eruption" title="Phreatic eruption">phreatomagmatic</a> deposits were laid down, suggesting the subsidence of the volcano into its <a href="/wiki/Graben" title="Graben">graben</a> was rapid during this period. Activity from 150,000 years ago to the present has occurred at a number of sites around the volcanic complex, building four main domes at different times: the No-dake (70–150,000 years old), Myōken-dake (25–40,000 years old), Fugen-dake (younger than 25,000 years old) and Mayu-yama (4,000 years old) volcanic peaks. Fugen-dake has been the site of most eruptions during the past 20,000 years and lies about 6 kilometres (3.7 mi) from the center of Shimabara. In December 1663, Fugen-dake erupted, producing lava flows that covered forest for over an extension of 1 km (0.62 mi). In the spring of the following year, there was a flood from the Kujuku Island crater, located on the southeastern flank of Fugen-dake at an altitude of 600 metres (2,000 ft). More than 30 were killed.<a href="#cite_note-5">[5]</a> Unzen's <a href="/wiki/1792_Unzen_earthquake_and_tsunami" class="mw-redirect" title="1792 Unzen earthquake and tsunami">deadliest eruption occurred in 1792</a>, beginning with an earthquake in November of the previous year. On February 10, 1792, eruptions from Fugen-dake's Jigokuato crater began. Lava flows began on March 1 and continued for nearly two months. On March 22, volcanic plumes were produced, and lava also flowed out of the crater. On March 25, fumes rose and lava flowed down the northeastern part of Fugen-dake at a total length of 2.7 km (1.7 mi). Eventually, the east flank of the Mayu-yama dome collapsed unexpectedly following a post-eruption earthquake, creating a <a href="/wiki/Volcanic_landslide" title="Volcanic landslide">landslide</a> into <a href="/wiki/Ariake_Bay" class="mw-redirect" title="Ariake Bay">Ariake Bay</a>. This caused a <a href="/wiki/Tsunami" title="Tsunami">tsunami</a> that killed an estimated 15,000 people. As of 2011<a class="external text" href="https://en.wikipedia.org/w/index.php?title=Mount_Unzen&action=edit">[update]</a> it is the worst volcanic related eruption in Japan.<a href="#cite_note-jt-shinmoe-6">[6]</a> <div class="mw-heading mw-heading3"><h3 id="November_1990_to_May_1991">November 1990 to May 1991</h3> <a role="button" href="/w/index.php?title=Mount_Unzen&action=edit&section=4" title="Edit section: November 1990 to May 1991" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Unzen_volcano.jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d1/Unzen_volcano.jpg/220px-Unzen_volcano.jpg" decoding="async" width="220" height="279" class="mw-file-element" data-file-width="512" data-file-height="649"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 279px;" data-mw-src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d1/Unzen_volcano.jpg/220px-Unzen_volcano.jpg" data-width="220" data-height="279" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d1/Unzen_volcano.jpg/330px-Unzen_volcano.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d1/Unzen_volcano.jpg/440px-Unzen_volcano.jpg 2x" data-class="mw-file-element"> </a><figcaption><a href="/wiki/Spaceborne_Imaging_Radar" title="Spaceborne Imaging Radar">Spaceborne radar image</a> of Unzen, taken from Space Shuttle, April 15, 1994</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:USGS-destructionby-unzenvolcano1993.jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/eb/USGS-destructionby-unzenvolcano1993.jpg/220px-USGS-destructionby-unzenvolcano1993.jpg" decoding="async" width="220" height="145" class="mw-file-element" data-file-width="702" data-file-height="463"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 145px;" data-mw-src="//upload.wikimedia.org/wikipedia/commons/thumb/e/eb/USGS-destructionby-unzenvolcano1993.jpg/220px-USGS-destructionby-unzenvolcano1993.jpg" data-width="220" data-height="145" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/eb/USGS-destructionby-unzenvolcano1993.jpg/330px-USGS-destructionby-unzenvolcano1993.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/eb/USGS-destructionby-unzenvolcano1993.jpg/440px-USGS-destructionby-unzenvolcano1993.jpg 2x" data-class="mw-file-element"> </a><figcaption>House destroyed and partially buried by <a href="/wiki/Lahar" title="Lahar">lahars</a> in the Mizunashi River valley, 1994</figcaption></figure> After 1792, the volcano remained dormant until it erupted again in November 1990. It started with a slowly building active phase in 1968, with first earthquake swarms continuing until 1975. Large amounts of volcanic gas were ejected by Fugen, which affected about thirty cedar trees. In 1975, bird and animal carcasses were found in the surrounding area, and high concentrations of carbon dioxide were detected emitting from rock fractures. This area was also reported to have erupted volcanic gasses during the 1792 eruption. Earthquakes occurred sporadically from 1975, but there were 89 sensitive earthquakes, with strong shaking equivalent to a maximum seismic intensity of 5 from June to September 1979. At Shimabara Onsen, there was a place where the dissolved carbon dioxide concentration rose sharply from 1975 and increased by 30%. From April 1984, swarms occurred in Tachibana Bay. A magnitude 5.7 earthquake with a seismic intensity of 5 occurred in August near the south side of Hayama.<a href="#cite_note-SI-7">[7]</a> As a result of this earthquake, uplift of the Shimabara Peninsula was observed, and magma supply from Tachibana Bay began. In November 1989, an earthquake swarm began about 20 km (12 mi) underneath and 10 km (6.2 mi) west of Fugen-dake. Over the following year, earthquakes continued, and their <a href="/wiki/Hypocentre" class="mw-redirect" title="Hypocentre">hypocentres</a> gradually migrated towards the summit.<a href="#cite_note-8">[8]</a><a href="#cite_note-9">[9]</a><a href="#cite_note-10">[10]</a> Finally on November 17, 1990 (Heisei 2), the first <a href="/wiki/Phreatic_eruption" title="Phreatic eruption">phreatic, or steam-blast, eruptions</a> began ejecting from two places near a shrine at the summit. These eruptions only allowed vaporized hot water and ash to blow up from the two craters. In December of the same year, the volcano's state lulled and it seemed that it would end, but it erupted again on February 12, 1991, and on April 3 and 4.<a href="#cite_note-11">[11]</a> The eruption intensified on May 9. On May 15, the first <a href="/wiki/Debris_flow" title="Debris flow">debris flow</a> caused by accumulated volcanic ash at the summit occurred, and a number of cracks were formed on the west side of the crater, extending in an east–west direction. After this <a href="/wiki/Deformation_(volcanology)" title="Deformation (volcanology)">inflation</a> of the summit area, fresh lava was confirmed to be emerging on May 20, 1991.<a href="#cite_note-12">[12]</a> The lava was so viscous that it did not flow out, but instead became a dome which formed in the crater. The lava dome grew like a peach, eventually splitting and collapsing into four pieces under its own weight. After that, the dome continued to grow, continuously supplied with fresh lava from the crater underneath, creating new lobes that hung down from the summit. The 1st to 13th lobes were named in the order they were formed. Collapsing of the lava dome began to occur when the lobes, pushed out by the newly supplied magma, started to give way on the slope, causing a phenomenon known as pyroclastic flows (in which debris and volcanic gasses flow down the mountainside at speeds of 100 km/h). <div class="mw-heading mw-heading3"><h3 id="June_3,_1991_eruption_disaster"> June 3, 1991 eruption disaster</h3> <a role="button" href="/w/index.php?title=Mount_Unzen&action=edit&section=5" title="Edit section: June 3, 1991 eruption disaster" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> The threat of further disastrous events prompted authorities to <a href="/wiki/Emergency_evacuation" title="Emergency evacuation">evacuate</a> 12,000 residents from their homes. On June 3, 1991, the volcano erupted violently, possibly as a result of depressurisation of the <a href="/wiki/Magma" title="Magma">magma</a> column after a <a href="/wiki/Landslide" title="Landslide">landslide</a> in the crater. A <a href="/wiki/Pyroclastic_flow" title="Pyroclastic flow">pyroclastic flow</a> triggered by the collapse of a <a href="/wiki/Lava_dome" title="Lava dome">lava dome</a> reached 4.5 km (2.8 mi) from the crater and claimed the lives of 43 scientists and journalists, including <a href="/wiki/Volcanologist" title="Volcanologist">volcanologists</a> <a href="/wiki/Katia_and_Maurice_Krafft" title="Katia and Maurice Krafft">Katia and Maurice Krafft</a> and <a href="/wiki/Harry_Glicken" title="Harry Glicken">Harry Glicken</a>.<a href="#cite_note-13">[13]</a><a href="#cite_note-14">[14]</a> <div class="mw-heading mw-heading4"><h4 id="Before_the_eruption">Before the eruption</h4> <a role="button" href="/w/index.php?title=Mount_Unzen&action=edit&section=6" title="Edit section: Before the eruption" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> The first debris flow in the Mizunashi River (located at the foothills of Unzendake) occurred on May 15, and others continued to occur in succession on the 19th, 20th, and 21st. Shimabara City made an evacuation recommendation to the towns in the Mizunashi River basin each time, resulting in smooth evacuation of residents and no human fatalities.<a href="#cite_note-SI-7">[7]</a> However, on May 20, when the lava dome appeared on Fugen-dake, it continued to grow day by day, and on May 24 part of the dome collapsed and the first pyroclastic flow occurred.<a href="#cite_note-15">[15]</a> After that, small pyroclastic flows occurred frequently, reaching a distance of 2.5 km (1.6 mi) east of the lava dome on May 26, and 3 km (1.9 mi) on May 29. On May 26 when the tip of a pyroclastic flow approached 500 m (1,600 ft) from the nearest private houses, Shimabara City issued an evacuation recommendation for Kita-Kamikoba town, Minami-Kamikoba town, Shirataki town, Tenjin Motomachi, and Fudan Motomachi – all located in the Mizunashi River basin. The evacuation recommendation was carried out without trouble. In order to capture the pyroclastic flow activity on film, the mass media chose a select spot within the evacuation advisory area. This spot was 4 km (2.5 mi) away from the lava dome, 700 m (2,300 ft) away from the Mizunashi River (where debris flows were frequent), and 40 m (130 ft) high. This shooting spot was located on the prefectural road in the village of Kita-Kamikoba, and was favored by the media because they were able to view Fugen-dake directly in front of them. The nickname "fixed point" was established. After the first pyroclastic flow on May 24, more than a dozen media members were lined up at the "fixed point". In 1991, the media had started to use color photographs on the paper, and with the Fugen-dake disaster becoming an ongoing topic of coverage, the companies started competing for color photographs. The competition became even more intense as the Mainichi Shimbun succeeded in shooting nightly pyroclastic flows on May 28. The fact that pyroclastic flows were being recorded in clear images for the first time attracted a great deal of attention from all over the world, and many volcanologists and government officials entered the evacuation advisory area for interviews and photography. On May 28, the Ministry of Construction (at that time officials of the Public Works Research Institute) released a picture taken when entering the path of previous pyroclastic flows below the lava dome, and another group on the afternoon of June 1 or 2. After entering the tip of the deposit path, they surveyed the site for about an hour, photographed the pattern and released it.<a href="#cite_note-16">[16]</a> In addition, many visitors had begun to gather around Unzendake to see the plumes. In particular, since June 2 was Sunday, many visitors from other prefectures gathered around the Mizunashi River and observed the pyroclastic flows with binoculars and photographed them with video cameras. Traffic became heavy as a result. However, on May 26, reporters from the Asahi Shimbun were warned that it was likely for them to be engulfed by the clouds, and in an evacuation recommendation, they were asked to leave the "fixed point" and find another area. According to a photographer who continued aerial photography of the lava dome from the helicopter, "The bottom fans out from the Sabo dam of the Mizunashi River, and if a large pyroclastic flow occurs, there is a strong possibility of it striking the 'fixed point'." The Asahi Shimbun abandoned their position and retreated past the Tsutsuno bus stop, to instead set up a point in Fukae Town outside the evacuation zone on May 28, and switched to 24-hour shooting from there. At the "fixed point", the coverage in the vicinity was limited to patrols. Similarly, the Japan Broadcasting Corporation (NHK) stopped shooting from within the evacuated area from the end of May and arranged for an unmanned camera in the Kamikoba area. But until the unmanned camera was ready, the photographer who had been lowered backwards was advanced to the Kamikoba area once again on June 1. The evacuation area then became smaller, since the commercial broadcasters had shot footage of bright red lava on May 30 and 31; the person in charge of the news program (who ordered the initial retreat of the front-line shooting staff) ordered more images shot like it. Kamikoba soon emerged again as a filming location of the press. From May 15, when the debris flow evacuation advisory was issued, the fire brigade in charge of the Kamikoba district stayed either at the Minami-Kamikoba town fire brigade, or the Kita-Kamikoba town agricultural training center (which was initially an evacuation residence for locals). On May 29, due to the frequent occurrences of pyroclastic flows, they were evacuated from the firefighting station in Minami-Kamikoba town to the Shiratani Public Hall in the lower Mizunashi River, but on June 2, they returned to the Agricultural Training Center in Kita-Kamikoba town. This was because of the following reasons: <ul><li>Due to the temporary lull in rainfall, the occurrence of debris flow became more sparse, and it was judged that the area where the pyroclastic flows came out was a steep area and did not reach a gentle slope downwards. The evacuation for Tenjin Motomachi and Fudano Motomachi was lifted on the 1st, as well as Shiratani. Therefore, the fire brigade were no longer allowed to stay in the towns downstream from the Kamikoba area, as the evacuation advisories were now canceled.</li> <li>On May 29, preparations for the rainy season were resumed, and so was the removal of sediment from the Mizunashi River. But wire sensors that were installed to detect occurrences of debris flows were cut off on May 26 in a series of pyroclastic flows, and recovery of them was still expected to occur. As a result, it was decided to manually monitor the upstream part of the Mizunashi River. The agricultural training center in Kita-Kamikoba was favored for this, as it was located higher than the Minami-Kamikoba fire station.</li> <li>On June 2, several reports from a press conference by the Director General of Shimabara, detailed several TV station crews breaking into homes without permission, borrowing telephones and power outlets, and littering in the area. Also, after May 26, residents would often return to recover personal belongings from their homes, or enter the Kamikoba area to do housework or farm work, and it was considered necessary to guide their evacuation in the event of an emergency. As a result, it was convenient for the agricultural training school (which was close to the "fixed point") to monitor the behavior of the press and warn any nearby locals of danger.</li></ul> On Sunday, June 2, all 20 members of the Kamikoba area fire brigade slept at the agricultural training institute. They remained at the training center and were on alert.[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Karte_des_pyroklastischen_Stroms_vom_3._Juni_1991_am_Unzen.png" class="mw-file-description"><noscript><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/46/Karte_des_pyroklastischen_Stroms_vom_3._Juni_1991_am_Unzen.png/220px-Karte_des_pyroklastischen_Stroms_vom_3._Juni_1991_am_Unzen.png" decoding="async" width="220" height="128" class="mw-file-element" data-file-width="965" data-file-height="562"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 128px;" data-mw-src="//upload.wikimedia.org/wikipedia/commons/thumb/4/46/Karte_des_pyroklastischen_Stroms_vom_3._Juni_1991_am_Unzen.png/220px-Karte_des_pyroklastischen_Stroms_vom_3._Juni_1991_am_Unzen.png" data-alt="" data-width="220" data-height="128" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/46/Karte_des_pyroklastischen_Stroms_vom_3._Juni_1991_am_Unzen.png/330px-Karte_des_pyroklastischen_Stroms_vom_3._Juni_1991_am_Unzen.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/46/Karte_des_pyroklastischen_Stroms_vom_3._Juni_1991_am_Unzen.png/440px-Karte_des_pyroklastischen_Stroms_vom_3._Juni_1991_am_Unzen.png 2x" data-class="mw-file-element"> </a><figcaption>A map of the large-scale pyroclastic flow (and its surge) that occurred at 4:08 PM on June 3, 1991. The position of the Kraffts and Glicken is marked with a cross.</figcaption></figure> <div class="mw-heading mw-heading4"><h4 id="Eruption_and_Pyroclastic_flows">Eruption and Pyroclastic flows</h4> <a role="button" href="/w/index.php?title=Mount_Unzen&action=edit&section=7" title="Edit section: Eruption and Pyroclastic flows" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> After 3:30 pm on June 3, small and medium-sized pyroclastic flows occurred frequently, and the first large-scale pyroclastic flow occurred at 3:57. Although this pyroclastic flow (and its resulting pyroclastic surge) did not reach the "fixed point", visibility in the vicinity deteriorated significantly as <a href="/wiki/Volcanic_ash" title="Volcanic ash">volcanic ash</a> from the dispersing cloud covered the surroundings, in addition to the rainfall that had continued from the morning. At 4:08 pm, the second large pyroclastic flow occurred, descending the Mizunashi River Valley and reaching 3.2 km (2.0 mi) to the east from the lava dome. Although the main body of the flow continued to follow the river, the resulting pyroclastic surge spread out in a fan shape once it had exited the valley mouth and continued further, hitting Kita-Kamikoba town (4 km (2.5 mi) away from the lava dome) and finally stopping near the Tsutsuno bus stop (5 km (3.1 mi) away). The pyroclastic flow also flowed down the Akamatsu-dani River, but changed direction due to a gust of wind from the south, allowing the residents, firefighters, and the shooting staff (who left their camera behind to capture world-famous footage of the eruption)<a href="#cite_note-17">[17]</a><a href="#cite_note-18">[18]</a> to immediately escape the eruption. At the "fixed point", members of the media initially left their chartered taxis and company cars on the road with their engine running, facing south so that they could escape immediately in case of an unforeseen event. However, the field of view was poor due to dispersing ash from the previous pyroclastic flow, as well as due to the presence of rain, and it was almost impossible to evacuate even from the windward side, as the pyroclastic surge that flowed from the Akamatsu-dani River would have cut them off. A fire brigade member of the agricultural training station, several hundred meters away from the "fixed point", assumed incorrectly that the roaring of the pyroclastic flow was caused by a debris flow instead, and was engulfed by the pyroclastic surge when he left the training station to check the Mizunashi River. Many members escaped from the evacuation advisory area on their own, but suffered severe burns and airway damage. As a result, 16 members of the media (including part-time students), three volcanologists (the Kraffts and Harry Glicken), 12 firefighters who were on guard, four taxi drivers, two police officers who came by police car to conduct evacuation guidance, two workers who were removing the city council election poster bulletin board, and four residents who were working in agriculture were killed. The disaster resulted in 43 dead or missing, and nine injured. The photographer of the Yomiuri Shimbun newspaper died holding his Nikon F4. The camera recorded seven frames of the pyroclastic flow, although it was discolored by heat. All of the areas surrounding the "fixed point" where many casualties occurred, were within the advised evacuation zone.[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] A professional video camera used by an NTV cameraman who died in the pyroclastic flow was discovered in June 2005. The camera melted due to the high temperature generated by the pyroclastic flow and was severely damaged, but the tape it contained was playable, despite having been buried under volcanic deposits for almost 15 years. The video received from the camera shows the reporters observing the first pyroclastic flow, and then continuing to report after having moved their position to the "fixed point". It also displays the police cars that announced evacuation, all unaware of the approach of the second large pyroclastic flow. The footage and sound were recorded and recovered, although heavily damaged and warped (the video ends when the cameraman notices a sound apparently associated with the generating pyroclastic flow, and asks "What's that sound?", whilst turning the camera in the direction of Mt. Fugen). This video was broadcast on October 16, 2005, and is now exhibited at the Unzendake Disaster Memorial Hall (Shimabara City) alongside the melted camera.<a href="#cite_note-19">[19]</a><a href="#cite_note-20">[20]</a> It is unclear as to what caused the unprecedented size of the second, large-scale pyroclastic flow on June 3. It has been suggested that the heavy ash-laden column that towered over the main flow, collapsed during its descent, causing the surge.<a href="#cite_note-21">[21]</a> It has also been pointed out that when the dome collapsed, 0.5 million cubic meters of hardened lava broke off, leaving a significant collapse scar afterwards, suggesting that the size of the dome collapse (rather than the column collapse) initiated the surge.<a href="#cite_note-22">[22]</a> Other explanations account the fact that previous lahars and pyroclastic flows filled the Mizunashi Valley, raising the level of the river-bed and making it more likely for the flow to "skip" ridges that would have once stopped it.[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] According to the 2011 documentary Face au Volcan Tueur (French for Facing the Killer Volcano), the unexpected surge could have been caused by phreatic explosions as the main body of the pyroclastic flow proceeded down two waterfalls at the headwaters of the river, fragmenting the ash-particles of the avalanche and expanding the energy of the overlaying gas and ash cloud.<a href="#cite_note-23">[23]</a> <div class="mw-heading mw-heading4"><h4 id="Effects_and_aftermath">Effects and aftermath</h4> <a role="button" href="/w/index.php?title=Mount_Unzen&action=edit&section=8" title="Edit section: Effects and aftermath" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> Pyroclastic flows continued over the next few days following the June 3 eruption, however, they were reportedly smaller and less frequent. Even so, rescue efforts and movements to recover the bodies of the victims, were disrupted and stalled due to the ever-present danger.<a href="#cite_note-SI-7">[7]</a> Authorities eventually managed to recover 27 bodies and brought them to the Anyoji Temple.<a href="#cite_note-Unzen_Volcano-24">[24]</a> Four of the victims' bodies were never recovered, and were reported as missing at the time, but presumed dead. Many of the recovered bodies were carbonized due to the extreme heat of the surge, and were identified by either dental records, or personal belongings they carried with them (e.g. wristwatches or cameras). Seventeen victims on the outer edges of the affected zone lived for a while, before succumbing later to their injuries (burns to their skin and lungs, or inhaled ash in their windpipe and lungs).<a href="#cite_note-Williams_2001_https://archive.org/details/survivinggaleras00stan/page/125_125-25">[25]</a> The final victim reportedly died on August 8.<a href="#cite_note-SI-7">[7]</a> The collapse of the <a href="/wiki/Lava_dome" title="Lava dome">lava dome</a> itself left a notable scar on the eastern side of the summit, and the pyroclastic flow and surge resulted in much damage in the Kamikoba district.<a href="#cite_note-26">[26]</a><a href="#cite_note-27">[27]</a> Kita-Kamikoba was almost completely destroyed. Around 170 houses were devastated, many of them set alight by the intense heat of the ash. Pictures have shown that the pyroclastic flow left significant deposits near the mouth of the Mizunashi River Valley, enough to bury houses and the river itself.<a href="#cite_note-28">[28]</a> In contrast, the surge that detached from the flow left deposits of ash between 3 and 30 centimetres (1.2 and 11.8 in) thick, however trees were flattened and many buildings continued burning until the next morning.<a href="#cite_note-29">[29]</a><a href="#cite_note-SI-7">[7]</a><a href="#cite_note-Williams_2001_https://archive.org/details/survivinggaleras00stan/page/125_125-25">[25]</a> The force of the surge was enough to push a car 80 metres (260 ft) down-road.<a href="#cite_note-Unzen_Volcano-24">[24]</a> Many of the casualties of the June 3 eruption could have been avoided if the danger of pyroclastic flows had been made more apparent beforehand. While the first pyroclastic flow on May 24 was shocking, many did not understand just how lethal such events could become. A reporter stated at the time: "I knew they were quite hot, but didn't know they could be accompanied by (pyroclastic surges). I thought we could escape by car, but I didn't know the extent at which it burned." Twenty-five days after the event, the Japan Meteorological Agency revealed that while the first dome collapse was reported, much of the mass media and local residents were in a state of confusion about the danger of pyroclastic flows, and were not particularly concerned about them overall. The media originally reported that the pyroclastic flows seen on Fugen-dake at the time were "geologically small", which many regarded as "a scale that would cause no human fatalities". On May 26, a construction worker operating a Sabo dam in the upstream area of the Mizunashi River was caught in a pyroclastic flow; he survived but was sent to hospital with burns on his arms. Many thought that such burns could be prevented by wearing a long-sleeved shirt. The danger of the phenomena was not made clear. Furthermore, the number of pyroclastic flows from May 25 to June 2 had increased to 165, and all had stopped near the Sabo dam in the upper reaches of the valley. As a result, much of the media grew accustomed to the eruptions and no longer felt like they were in any danger. Shimabara City issued an evacuation advisory for the villages near the base of Unzen on May 26, but responded to the residents' request that patrolling police officers allow them into the area to return to their homes (in preparation for prolonged evacuation). From the same day onward, a "district name sticker" was issued, and private cars with such a sticker were given permission to enter the evacuated area. For this reason, there were many residents doing laundry and field work at homes in the zone that had been declared dangerous. In the Kamikoba area, in particular, there were many farmers who made a living by cultivating tobacco leaf, but since they had been forced to evacuate for a long time (since the May 15 debris flows), their work grew stagnant and many of them were concerned. For this reason, on June 4, in collaboration with tobacco farmers in Annaka Town (which had not been evacuated), the residents of the Kamikoba area entered the evacuation zone to perform flower filling work later than usual. Volcanologists did not talk about the danger of pyroclastic flows initially, because they feared residents would panic, especially those still working in the evacuated area. Residents were warned not to enter the evacuation advisory area by Shimabara City and the media, but since May, no concrete image was given regarding the danger of pyroclastic flows compared to that of debris flows (which had caused significant damage previously), and most residents did not take the warnings seriously. Many misunderstood them to be mere clouds of dust. According to the "Investigation of Disaster Information Transmission and Residents' Responses during the 1991 Unzendake Eruption" conducted in 1992, 75% of local residents recognized debris flows as more dangerous than pyroclastic flows before June 2. Only 15% perceived pyroclastic flows to be more dangerous. Furthermore, only 5% of the residents in the Kamikoba area recognized pyroclastic flows as "very dangerous". As was seen in the survey results, the volcanologist's warnings were not even understood by residents living in the most dangerous areas. On June 3, a debris flow warning was passed out due to rain that began in the morning, and a party was held in Shiratani to celebrate the winner of the Shimabara City Council election on June 2. As a result of those two factors, most residents were withdrawn from the evacuation advisory area, and fortunately resulted in fewer victims.[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(3)"><h2 id="Eruptions_after_June_3,_1991">Eruptions after June 3, 1991</h2> <a role="button" href="/w/index.php?title=Mount_Unzen&action=edit&section=9" title="Edit section: Eruptions after June 3, 1991" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-3 collapsible-block" id="mf-section-3"> The eruption activity continued until March 1995, with a temporary pause during its course. Between 1991 and 1994, the volcano generated at least 10,000 small pyroclastic flows, destroying about 2,000 houses. From 1993 onward, the rate of lava effusion gradually decreased, and eruptions came to an end in 1995.<a href="#cite_note-30">[30]</a> The 1990–1995 eruptions of Unzen were the first eruptive activities in the world where pyroclastic flows were recorded clearly and continuously on video (in the past, many pyroclastic flows, such as those on Mt. Pelee, were recorded either as photographs or on small-scale videos).<a href="#cite_note-yt-unzeneruptionvideo-31">[31]</a> Dome collapses and pyroclastic flows continued. The first large-scale dome collapses and pyroclastic flows occurred after June 3 on September 15, 1991. Progressive failure of the NE flank of the lava dome started at 16:44, with major flows following at 17:59 and 18:45 before the largest pyroclastic flow at 18:54. The first flows descended towards the NE and stopped just short of Kita-Kamikoba. The main flow initially descended on the NE flank and was then deflected by Taruki height, directing it to the SE, after which it passed through the already ravaged Kita-Kamikoba, where it remobilized debris from the June 3 eruption, then continued east through the Mizunashi river valley. As the pyroclastic flow reached Onokoba the pyroclastic surge detached from the main flow body as it continued moving 600 m (2,000 ft) to the SE before losing its energy and stopping. The surge was powerful enough to move a car 120 m (390 ft), flatten and uproot large trees and even move large debris in Kita-Kamikoba and Onokoba. The surge destroyed the Onokaba elementary school and burned down 150 homes.<a href="#cite_note-32">[32]</a> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(4)"><h2 id="Current_status_(post-1995)">Current status (post-1995)</h2> <a role="button" href="/w/index.php?title=Mount_Unzen&action=edit&section=10" title="Edit section: Current status (post-1995)" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-4 collapsible-block" id="mf-section-4"> <div class="mw-heading mw-heading3"><h3 id="Effects_of_the_Heisei_eruptions/restoration_work">Effects of the Heisei eruptions/restoration work</h3> <a role="button" href="/w/index.php?title=Mount_Unzen&action=edit&section=11" title="Edit section: Effects of the Heisei eruptions/restoration work" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> The eruptive activity caused great damage to the Shimabara Peninsula, especially Shimabara City and Fukae Town. The main factor that led to damage were debris flows and lahars, initiated by heavy rain which destabilized pyroclastic flow and ash debris previously deposited on the slopes. The Mizunashi basin, as well as the Senbongi district and parts of Shimabara were severely damaged. In addition, there was concern about the collapse of Mt. Mayuyama, which previously caused the 1792 disaster. In this eruptive activity, however, Mt. Mayuyama protected the center of Shimabara from the pyroclastic flows. In areas other than Shimabara and Fukae, there was ash fall depending on the wind direction, and at Kumamoto Airport, it had an impact on the arrival and departure of aircraft. Since the eruptions, heavy rains have frequently remobilised pyroclastic material, generating <a href="/wiki/Lahar" title="Lahar">lahars</a>. <a href="/wiki/Dike_(construction)" class="mw-redirect" title="Dike (construction)">Dikes</a> have been constructed in several <a href="/wiki/River" title="River">river</a> <a href="/wiki/Valley" title="Valley">valleys</a> to channel lahar flows away from vulnerable areas, and warning systems and evacuation plans have been developed and deployed. <ul><li>Among the areas destroyed by the pyroclastic flows, the area around Heisei Shinzan and the upper part of the Mizunashi River are still designated as warning areas because of the possibility of collapses of the mountain.</li> <li>The Mizunashi River was completely filled by earth and sand dredging. Dykes and bridges have been strengthened. In the downstream area, there was too much sediment, so a new residential area was built on the sediment. In addition, a roadside station Mizunashi Honjin Fukae was installed on National Route 251.</li> <li>On the coast, a landfill (Heisei-cho) was built by the earth and sand transported, and the Unzendake Disaster Memorial Hall, Shimabara Reconstruction Arena and Shimabara Workers General Welfare Center were built there.</li> <li>10 million yen of support was provided to the residents with completely destroyed households. A new residential area – the "Nita housing complex" – was created on a hill for the victims.</li> <li>Various assistance was provided to prevent farmers from leaving the area. The Agricultural Improvement and Extension Center conducted interviews with all affected households (667 households) and held consultations for those who wished to resume agriculture until 1999. Training allowances were provided for those who plan to change the crops handled, and the reconstruction fund received a subsidy for the installation of a greenhouse or relocation costs. In parallel, the irrigation facilities in the affected areas were also developed. At the time of resuming agriculture in 2000, the number of farmers in the affected areas had decreased to 374. However, these support measures were successful, and the value of agricultural production in Shimabara City and Fukae Town recovered to almost the same level as before the disaster in 2005.</li> <li>On the bottom of the Ariake Sea off Shimabara city, volcanic ash had accumulated 20 to 80 centimetres (7.9 to 31.5 in) of mud and it has had difficulty recovering naturally.</li> <li>Heisei Shinzan has been surveyed and climbed several times (the general public is prohibited from climbing because of the alert area), and a detailed observation of the lava dome was carried out. Even now, active fumaroles can be observed from several places on the summit.</li> <li>The Shimabara Railway Line passed through the area affected by the eruptions, but was restored on some elevated reduction, including a disaster zone in 2008. Shimabaragaiko Station continued to operate, but Kazusa Station was abandoned.[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>]</li></ul> Mount Unzen was designated a <a href="/wiki/Decade_Volcano" class="mw-redirect" title="Decade Volcano">Decade Volcano</a> by the <a href="/wiki/United_Nations" title="United Nations">United Nations</a>, in 1991 as part of their <a href="/wiki/International_Decade_for_Natural_Disaster_Reduction" title="International Decade for Natural Disaster Reduction">International Decade for Natural Disaster Reduction</a>, due to its history of violent activity and location in a <a href="/wiki/Population_density" title="Population density">densely populated</a> area. </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(5)"><h2 id="Unzen_Scientific_Drilling_Project_(USDP)">Unzen Scientific Drilling Project (USDP)</h2> <a role="button" href="/w/index.php?title=Mount_Unzen&action=edit&section=12" title="Edit section: Unzen Scientific Drilling Project (USDP)" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-5 collapsible-block" id="mf-section-5"> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:UnzenDevastation.jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2d/UnzenDevastation.jpg/220px-UnzenDevastation.jpg" decoding="async" width="220" height="148" class="mw-file-element" data-file-width="640" data-file-height="431"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 148px;" data-mw-src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2d/UnzenDevastation.jpg/220px-UnzenDevastation.jpg" data-width="220" data-height="148" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2d/UnzenDevastation.jpg/330px-UnzenDevastation.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/2d/UnzenDevastation.jpg/440px-UnzenDevastation.jpg 2x" data-class="mw-file-element"> </a><figcaption>Devastation from Mt. Unzen's 1991 eruption</figcaption></figure> In 1999, an ambitious project began at Mount Unzen to drill deep inside the volcano and sample magma in the 1990–1995 eruption <a href="/wiki/Lava_tube" title="Lava tube">conduit</a>.<a href="#cite_note-33">[33]</a> The project hoped to shed light on some fundamental questions in volcanology, such as why magma repeatedly travels in the same conduits despite the solidification of magma in them at the end of each eruption, and how it can lose enough gas on its ascent to erupt effusively rather than explosively. Drilling began with test bores to assess the viability of a deep <a href="/wiki/Borehole" title="Borehole">borehole</a>. Two holes were drilled, 750 metres (2,460 ft) and 1,500 metres (4,900 ft) deep, and cores taken from these holes were used to better determine Unzen's eruptive history. One further 350-metre (1,150 ft) deep borehole was drilled to test the methods to be used in the final drilling project. The main drill began in 2003, starting from the northern flank of the volcano with a 440 mm (17 in) hole at an angle of 25 degrees from vertical. At greater depths, the direction of boring was tilted towards the conduit, reaching an angle of 75 degrees from vertical at a depth of 800 metres (2,600 ft). Drilling reached 1,800 metres (5,900 ft), the original target depth, without reaching the conduit, but in July 2004 at a depth of 1,995 metres (6,545 ft), the conduit was finally reached. The vertical depth below the summit was 1,500 metres (4,900 ft). The temperature at the conduit was about 155 °C (311 °F), much lower than pre-drill estimations of 500 °C (932 °F) and over. This was attributed to hydrothermal circulation accelerating the cooling of the magma over the nine to ten years since the end of the eruption. </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(6)"><h2 id="Rivers">Rivers</h2> <a role="button" href="/w/index.php?title=Mount_Unzen&action=edit&section=13" title="Edit section: Rivers" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-6 collapsible-block" id="mf-section-6"> <a href="/wiki/Arie_River" title="Arie River">Arie River</a> starts at Mount Unzen and flows to the Ariake Sea. </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(7)"><h2 id="Climate">Climate</h2> <a role="button" href="/w/index.php?title=Mount_Unzen&action=edit&section=14" title="Edit section: Climate" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-7 collapsible-block" id="mf-section-7"> <div> <table class="wikitable mw-collapsible" style="width:auto; text-align:center; line-height:1.2em;"> <tbody><tr> <th colspan="14">Climate data for <a class="mw-selflink selflink">Mount Unzen</a>, 1991–2020 normals, extremes 1924–present </th></tr> <tr> <th scope="row">Month </th> <th scope="col">Jan </th> <th scope="col">Feb </th> <th scope="col">Mar </th> <th scope="col">Apr </th> <th scope="col">May </th> <th scope="col">Jun </th> <th scope="col">Jul </th> <th scope="col">Aug </th> <th scope="col">Sep </th> <th scope="col">Oct </th> <th scope="col">Nov </th> <th scope="col">Dec </th> <th scope="col" style="border-left-width:medium">Year </th></tr> <tr style="text-align: center;"> <th scope="row" style="height: 16px;">Record high °C (°F) </th> <td style="background: #FFA64E; color:#000000;" class="notheme">17.3 (63.1) </td> <td style="background: #FFA042; color:#000000;" class="notheme">18.2 (64.8) </td> <td style="background: #FF8B18; color:#000000;" class="notheme">21.2 (70.2) </td> <td style="background: #FF6F00; color:#000000;" class="notheme">25.3 (77.5) </td> <td style="background: #FF5300; color:#000000;" class="notheme">29.4 (84.9) </td> <td style="background: #FF4800; color:#000000;" class="notheme">31.0 (87.8) </td> <td style="background: #FF3B00; color:#000000;" class="notheme">32.8 (91.0) </td> <td style="background: #FF3900; color:#000000;" class="notheme">33.2 (91.8) </td> <td style="background: #FF4600; color:#000000;" class="notheme">31.3 (88.3) </td> <td style="background: #FF5F00; color:#000000;" class="notheme">27.6 (81.7) </td> <td style="background: #FF8206; color:#000000;" class="notheme">22.5 (72.5) </td> <td style="background: #FF9D3C; color:#000000;" class="notheme">18.6 (65.5) </td> <td style="background: #FF3900; color:#000000; border-left-width:medium" class="notheme">33.2 (91.8) </td></tr> <tr style="text-align: center;"> <th scope="row" style="height: 16px;">Mean daily maximum °C (°F) </th> <td style="background: #FFF3E8; color:#000000;" class="notheme">6.1 (43.0) </td> <td style="background: #FFE8D2; color:#000000;" class="notheme">7.7 (45.9) </td> <td style="background: #FFD0A2; color:#000000;" class="notheme">11.2 (52.2) </td> <td style="background: #FFAF5F; color:#000000;" class="notheme">16.1 (61.0) </td> <td style="background: #FF9022; color:#000000;" class="notheme">20.5 (68.9) </td> <td style="background: #FF8104; color:#000000;" class="notheme">22.7 (72.9) </td> <td style="background: #FF6C00; color:#000000;" class="notheme">25.8 (78.4) </td> <td style="background: #FF6200; color:#000000;" class="notheme">27.2 (81.0) </td> <td style="background: #FF7500; color:#000000;" class="notheme">24.5 (76.1) </td> <td style="background: #FF952C; color:#000000;" class="notheme">19.8 (67.6) </td> <td style="background: #FFBC79; color:#000000;" class="notheme">14.2 (57.6) </td> <td style="background: #FFE2C6; color:#000000;" class="notheme">8.6 (47.5) </td> <td style="background: #FFA852; color:#000000; border-left-width:medium" class="notheme">17.0 (62.7) </td></tr> <tr style="text-align: center;"> <th scope="row" style="height: 16px;">Daily mean °C (°F) </th> <td style="background: #F4F4FF; color:#000000;" class="notheme">2.5 (36.5) </td> <td style="background: #FAFAFF; color:#000000;" class="notheme">3.6 (38.5) </td> <td style="background: #FFEFDF; color:#000000;" class="notheme">6.8 (44.2) </td> <td style="background: #FFCE9E; color:#000000;" class="notheme">11.5 (52.7) </td> <td style="background: #FFB061; color:#000000;" class="notheme">15.9 (60.6) </td> <td style="background: #FF9934; color:#000000;" class="notheme">19.2 (66.6) </td> <td style="background: #FF8206; color:#000000;" class="notheme">22.5 (72.5) </td> <td style="background: #FF7D00; color:#000000;" class="notheme">23.3 (73.9) </td> <td style="background: #FF9123; color:#000000;" class="notheme">20.4 (68.7) </td> <td style="background: #FFB46A; color:#000000;" class="notheme">15.3 (59.5) </td> <td style="background: #FFD9B3; color:#000000;" class="notheme">10.0 (50.0) </td> <td style="background: #FFFDFC; color:#000000;" class="notheme">4.7 (40.5) </td> <td style="background: #FFC489; color:#000000; border-left-width:medium" class="notheme">13.0 (55.4) </td></tr> <tr style="text-align: center;"> <th scope="row" style="height: 16px;">Mean daily minimum °C (°F) </th> <td style="background: #E2E2FF; color:#000000;" class="notheme">−0.7 (30.7) </td> <td style="background: #E6E6FF; color:#000000;" class="notheme">−0.1 (31.8) </td> <td style="background: #F5F5FF; color:#000000;" class="notheme">2.8 (37.0) </td> <td style="background: #FFECD9; color:#000000;" class="notheme">7.2 (45.0) </td> <td style="background: #FFCE9D; color:#000000;" class="notheme">11.6 (52.9) </td> <td style="background: #FFAF5F; color:#000000;" class="notheme">16.1 (61.0) </td> <td style="background: #FF9429; color:#000000;" class="notheme">20.0 (68.0) </td> <td style="background: #FF9022; color:#000000;" class="notheme">20.5 (68.9) </td> <td style="background: #FFA851; color:#000000;" class="notheme">17.1 (62.8) </td> <td style="background: #FFCE9E; color:#000000;" class="notheme">11.5 (52.7) </td> <td style="background: #FFF2E6; color:#000000;" class="notheme">6.3 (43.3) </td> <td style="background: #EDEDFF; color:#000000;" class="notheme">1.2 (34.2) </td> <td style="background: #FFDCBA; color:#000000; border-left-width:medium" class="notheme">9.5 (49.0) </td></tr> <tr style="text-align: center;"> <th scope="row" style="height: 16px;">Record low °C (°F) </th> <td style="background: #A4A4FF; color:#000000;" class="notheme">−12.2 (10.0) </td> <td style="background: #A1A1FF; color:#000000;" class="notheme">−12.8 (9.0) </td> <td style="background: #A7A7FF; color:#000000;" class="notheme">−11.7 (10.9) </td> <td style="background: #C6C6FF; color:#000000;" class="notheme">−6.0 (21.2) </td> <td style="background: #EDEDFF; color:#000000;" class="notheme">1.3 (34.3) </td> <td style="background: #FFE9D4; color:#000000;" class="notheme">7.6 (45.7) </td> <td style="background: #FFC489; color:#000000;" class="notheme">13.0 (55.4) </td> <td style="background: #FFC58B; color:#000000;" class="notheme">12.9 (55.2) </td> <td style="background: #FFE6CD; color:#000000;" class="notheme">8.1 (46.6) </td> <td style="background: #E8E8FF; color:#000000;" class="notheme">0.3 (32.5) </td> <td style="background: #C6C6FF; color:#000000;" class="notheme">−6.0 (21.2) </td> <td style="background: #AFAFFF; color:#000000;" class="notheme">−10.2 (13.6) </td> <td style="background: #A1A1FF; color:#000000; border-left-width:medium" class="notheme">−12.8 (9.0) </td></tr> <tr style="text-align: center;"> <th scope="row" style="height: 16px;">Average <a href="/wiki/Precipitation" title="Precipitation">precipitation</a> mm (inches) </th> <td style="background: #7BFF7B; color:#000000;" class="notheme">88.2 (3.47) </td> <td style="background: #2BFF2B; color:#000000;" class="notheme">129.2 (5.09) </td> <td style="background: #00D000; color:#000000;" class="notheme">202.5 (7.97) </td> <td style="background: #007700; color:#FFFFFF;" class="notheme">253.3 (9.97) </td> <td style="background: #007200; color:#FFFFFF;" class="notheme">265.1 (10.44) </td> <td style="background: #003000; color:#FFFFFF;" class="notheme">575.4 (22.65) </td> <td style="background: #003000; color:#FFFFFF;" class="notheme">513.6 (20.22) </td> <td style="background: #003000; color:#FFFFFF;" class="notheme">314.4 (12.38) </td> <td style="background: #006C00; color:#FFFFFF;" class="notheme">260.7 (10.26) </td> <td style="background: #39FF39; color:#000000;" class="notheme">132.8 (5.23) </td> <td style="background: #40FF40; color:#000000;" class="notheme">123.5 (4.86) </td> <td style="background: #65FF65; color:#000000;" class="notheme">103.1 (4.06) </td> <td style="background: #008700; color:#FFFFFF; border-left-width:medium" class="notheme">2,961.8 (116.6) </td></tr> <tr style="text-align: center;"> <th scope="row" style="height: 16px;">Average snowfall cm (inches) </th> <td style="background: #4CFF4C; color:#000000;" class="notheme">12 (4.7) </td> <td style="background: #7CFF7C; color:#000000;" class="notheme">8 (3.1) </td> <td style="background: #E1FFE1; color:#000000;" class="notheme">2 (0.8) </td> <td style="background: #FFFFFF; color:#000000;" class="notheme">0 (0) </td> <td style="background: #FFFFFF; color:#000000;" class="notheme">0 (0) </td> <td style="background: #FFFFFF; color:#000000;" class="notheme">0 (0) </td> <td style="background: #FFFFFF; color:#000000;" class="notheme">0 (0) </td> <td style="background: #FFFFFF; color:#000000;" class="notheme">0 (0) </td> <td style="background: #FFFFFF; color:#000000;" class="notheme">0 (0) </td> <td style="background: #FFFFFF; color:#000000;" class="notheme">0 (0) </td> <td style="background: #FFFFFF; color:#000000;" class="notheme">0 (0) </td> <td style="background: #D2FFD2; color:#000000;" class="notheme">3 (1.2) </td> <td style="background: #DFFFDF; color:#000000; border-left-width:medium" class="notheme">25 (9.8) </td></tr> <tr style="text-align: center;"> <th scope="row" style="height: 16px;">Average precipitation days (≥ 1.0 mm) </th> <td style="background: #9797FF; color:#000000;" class="notheme">8.4 </td> <td style="background: #7E7EFF; color:#000000;" class="notheme">9.5 </td> <td style="background: #6D6DFF; color:#000000;" class="notheme">11.8 </td> <td style="background: #7575FF; color:#000000;" class="notheme">10.8 </td> <td style="background: #7878FF; color:#000000;" class="notheme">10.9 </td> <td style="background: #3939FF; color:#FFFFFF;" class="notheme">15.5 </td> <td style="background: #5C5CFF; color:#FFFFFF;" class="notheme">13.2 </td> <td style="background: #7777FF; color:#000000;" class="notheme">11.0 </td> <td style="background: #7B7BFF; color:#000000;" class="notheme">10.3 </td> <td style="background: #A3A3FF; color:#000000;" class="notheme">7.4 </td> <td style="background: #8989FF; color:#000000;" class="notheme">9.2 </td> <td style="background: #9191FF; color:#000000;" class="notheme">8.9 </td> <td style="background: #7A7AFF; color:#000000; border-left-width:medium" class="notheme">126.9 </td></tr> <tr style="text-align: center;"> <th scope="row" style="height: 16px;">Average snowy days (≥ 1 cm) </th> <td style="background: #D9D9FF; color:#000000;" class="notheme">3.0 </td> <td style="background: #DBDBFF; color:#000000;" class="notheme">2.6 </td> <td style="background: #F3F3FF; color:#000000;" class="notheme">0.9 </td> <td style="background: #FFFFFF; color:#000000;" class="notheme">0 </td> <td style="background: #FFFFFF; color:#000000;" class="notheme">0 </td> <td style="background: #FFFFFF; color:#000000;" class="notheme">0 </td> <td style="background: #FFFFFF; color:#000000;" class="notheme">0 </td> <td style="background: #FFFFFF; color:#000000;" class="notheme">0 </td> <td style="background: #FFFFFF; color:#000000;" class="notheme">0 </td> <td style="background: #FFFFFF; color:#000000;" class="notheme">0 </td> <td style="background: #FFFFFF; color:#000000;" class="notheme">0 </td> <td style="background: #F7F7FF; color:#000000;" class="notheme">0.6 </td> <td style="background: #F7F7FF; color:#000000; border-left-width:medium" class="notheme">7.1 </td></tr> <tr style="text-align: center;"> <th scope="row" style="height: 16px;">Average <a href="/wiki/Relative_humidity" class="mw-redirect" title="Relative humidity">relative humidity</a> (%) </th> <td style="background: #0000D3; color:#FFFFFF;" class="notheme">78 </td> <td style="background: #0000DB; color:#FFFFFF;" class="notheme">76 </td> <td style="background: #0000DF; color:#FFFFFF;" class="notheme">75 </td> <td style="background: #0000E2; color:#FFFFFF;" class="notheme">74 </td> <td style="background: #0000DB; color:#FFFFFF;" class="notheme">76 </td> <td style="background: #0000B5; color:#FFFFFF;" class="notheme">86 </td> <td style="background: #0000A5; color:#FFFFFF;" class="notheme">90 </td> <td style="background: #0000B5; color:#FFFFFF;" class="notheme">86 </td> <td style="background: #0000C0; color:#FFFFFF;" class="notheme">83 </td> <td style="background: #0000CF; color:#FFFFFF;" class="notheme">79 </td> <td style="background: #0000CB; color:#FFFFFF;" class="notheme">80 </td> <td style="background: #0000D3; color:#FFFFFF;" class="notheme">78 </td> <td style="background: #0000CB; color:#FFFFFF; border-left-width:medium" class="notheme">80 </td></tr> <tr style="text-align: center;"> <th scope="row" style="height: 16px;">Mean monthly <a href="/wiki/Sunshine_duration" title="Sunshine duration">sunshine hours</a> </th> <td style="background: #A1A1A1; color:#000000;" class="notheme">88.4 </td> <td style="background: #B2B276; color:#000000;" class="notheme">101.9 </td> <td style="background: #BCBC3A; color:#000000;" class="notheme">133.6 </td> <td style="background: #C6C600; color:#000000;" class="notheme">149.7 </td> <td style="background: #C8C800; color:#000000;" class="notheme">159.6 </td> <td style="background: #ABAB9E; color:#000000;" class="notheme">94.2 </td> <td style="background: #AFAF86; color:#000000;" class="notheme">105.8 </td> <td style="background: #BBBB3E; color:#000000;" class="notheme">132.3 </td> <td style="background: #B9B94A; color:#000000;" class="notheme">123.6 </td> <td style="background: #BFBF27; color:#000000;" class="notheme">140.6 </td> <td style="background: #B2B274; color:#000000;" class="notheme">108.8 </td> <td style="background: #ABABA0; color:#000000;" class="notheme">96.4 </td> <td style="background: #B7B75A; color:#000000; border-left-width:medium" class="notheme">1,436.6 </td></tr> <tr> <td colspan="14" style="text-align:center;font-size:95%;">Source 1: <a href="/wiki/Japan_Meteorological_Agency" title="Japan Meteorological Agency">JMA</a><a href="#cite_note-34">[34]</a> </td></tr> <tr> <td colspan="14" style="text-align:center;font-size:95%;">Source 2: <a href="/wiki/Japan_Meteorological_Agency" title="Japan Meteorological Agency">JMA</a><a href="#cite_note-35">[35]</a> </td></tr></tbody></table> </div> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(8)"><h2 id="See_also">See also</h2> <a role="button" href="/w/index.php?title=Mount_Unzen&action=edit&section=15" title="Edit section: See also" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-8 collapsible-block" id="mf-section-8"> <style data-mw-deduplicate="TemplateStyles:r1266661725">.mw-parser-output .portalbox{padding:0;margin:0.5em 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href="/wiki/List_of_volcanic_eruptions_by_death_toll" title="List of volcanic eruptions by death toll">List of volcanic eruptions by death toll</a></li> <li><a href="/wiki/List_of_volcanoes_in_Japan" title="List of volcanoes in Japan">List of volcanoes in Japan</a></li> <li><a href="/wiki/Mount_Pinatubo" title="Mount Pinatubo">Mount Pinatubo</a></li> <li><a href="/wiki/Unzen_Onsen" title="Unzen Onsen">Unzen Onsen</a></li> <li><a href="/wiki/Unzen_Ropeway" title="Unzen Ropeway">Unzen Ropeway</a></li></ul> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(9)"><h2 id="References">References</h2> <a role="button" href="/w/index.php?title=Mount_Unzen&action=edit&section=16" title="Edit section: References" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-9 collapsible-block" id="mf-section-9"> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-1"><a href="#cite_ref-1">^</a> <a rel="nofollow" class="external free" href="https://peakbagger.com/peak.aspx?pid=10928">https://peakbagger.com/peak.aspx?pid=10928</a> </li> <li id="cite_note-2"><a href="#cite_ref-2">^</a> <a rel="nofollow" class="external free" href="https://worldribus.org/japanese-archipelago/">https://worldribus.org/japanese-archipelago/</a> </li> <li id="cite_note-3"><a href="#cite_ref-3">^</a> <style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20060429020451/http://hakone.eri.u-tokyo.ac.jp/unzen/bgd.htm">"Geological Background of Unzen Volcano"</a>. Archived from <a rel="nofollow" class="external text" href="http://hakone.eri.u-tokyo.ac.jp/unzen/bgd.htm">the original</a> on 2006-04-29. Retrieved 2006-04-10.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Geological+Background+of+Unzen+Volcano&rft_id=http%3A%2F%2Fhakone.eri.u-tokyo.ac.jp%2Funzen%2Fbgd.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-4"><a href="#cite_ref-4">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1 cs1-prop-foreign-lang-source"><a rel="nofollow" class="external text" href="https://www.nishinippon.co.jp/item/o/305522/">"謎を呼ぶビール瓶次々戦時中、極秘レーダー基地長崎の普賢岳山頂に"</a>. 西日本新聞ニュース (in Japanese). Retrieved 2019-09-25.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=%E8%A5%BF%E6%97%A5%E6%9C%AC%E6%96%B0%E8%81%9E%E3%83%8B%E3%83%A5%E3%83%BC%E3%82%B9&rft.atitle=%E8%AC%8E%E3%82%92%E5%91%BC%E3%81%B6%E3%83%93%E3%83%BC%E3%83%AB%E7%93%B6%E6%AC%A1%E3%80%85+%E6%88%A6%E6%99%82%E4%B8%AD%E3%80%81%E6%A5%B5%E7%A7%98%E3%83%AC%E3%83%BC%E3%83%80%E3%83%BC%E5%9F%BA%E5%9C%B0+%E9%95%B7%E5%B4%8E%E3%81%AE%E6%99%AE%E8%B3%A2%E5%B2%B3%E5%B1%B1%E9%A0%82%E3%81%AB&rft_id=https%3A%2F%2Fwww.nishinippon.co.jp%2Fitem%2Fo%2F305522%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-5"><a href="#cite_ref-5">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.sabo-int.org/projects/unzen_01.pdf">"Unzen-Fugendake Eruption Executive Summary 1990－1995"</a> (PDF). sabo-int.org. Retrieved 2024-07-06.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=sabo-int.org&rft.atitle=Unzen-Fugendake+Eruption+Executive+Summary+1990%EF%BC%8D1995&rft_id=http%3A%2F%2Fwww.sabo-int.org%2Fprojects%2Funzen_01.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-jt-shinmoe-6"><a href="#cite_ref-jt-shinmoe_6-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFJohnston2011" class="citation news cs1">Johnston, Eric (1 March 2011). <a rel="nofollow" class="external text" href="http://www.japantimes.co.jp/news/2011/03/01/reference/latest-volcano-show-shinmoe/#.U2bul04_4b0">"Latest volcano show: Shinmoe"</a>. <a href="/wiki/The_Japan_Times" title="The Japan Times">The Japan Times</a>. p. 3. Retrieved 5 May 2014.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Japan+Times&rft.atitle=Latest+volcano+show%3A+Shinmoe&rft.pages=3&rft.date=2011-03-01&rft.aulast=Johnston&rft.aufirst=Eric&rft_id=http%3A%2F%2Fwww.japantimes.co.jp%2Fnews%2F2011%2F03%2F01%2Freference%2Flatest-volcano-show-shinmoe%2F%23.U2bul04_4b0&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-SI-7">^ <a href="#cite_ref-SI_7-0">a</a> <a href="#cite_ref-SI_7-1">b</a> <a href="#cite_ref-SI_7-2">c</a> <a href="#cite_ref-SI_7-3">d</a> <a href="#cite_ref-SI_7-4">e</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://volcano.si.edu/volcano.cfm?vn=282100">"Unzendake"</a>. <a href="/wiki/Global_Volcanism_Program" title="Global Volcanism Program">Global Volcanism Program</a>. <a href="/wiki/Smithsonian_Institution" title="Smithsonian Institution">Smithsonian Institution</a>. Retrieved 2021-06-24.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Global+Volcanism+Program&rft.atitle=Unzendake&rft_id=https%3A%2F%2Fvolcano.si.edu%2Fvolcano.cfm%3Fvn%3D282100&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-8"><a href="#cite_ref-8">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://museum.sci.kyushu-u.ac.jp/e/part3-e/p2-e/zencho_w1-e.html">"Zencho(water)-1 (English)"</a>. museum.sci.kyushu-u.ac.jp. Retrieved 2019-10-11.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=museum.sci.kyushu-u.ac.jp&rft.atitle=Zencho%28water%29-1+%28English%29&rft_id=http%3A%2F%2Fmuseum.sci.kyushu-u.ac.jp%2Fe%2Fpart3-e%2Fp2-e%2Fzencho_w1-e.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-9"><a href="#cite_ref-9">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://museum.sci.kyushu-u.ac.jp/e/part3-e/p3-e/zencho_w2-e.html">"Zencho(water)-2 (English)"</a>. museum.sci.kyushu-u.ac.jp. Retrieved 2019-10-11.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=museum.sci.kyushu-u.ac.jp&rft.atitle=Zencho%28water%29-2+%28English%29&rft_id=http%3A%2F%2Fmuseum.sci.kyushu-u.ac.jp%2Fe%2Fpart3-e%2Fp3-e%2Fzencho_w2-e.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-10"><a href="#cite_ref-10">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://museum.sci.kyushu-u.ac.jp/e/part3-e/p4-e/zencho_w3-e.html">"Zencho(water)-3 (English)"</a>. museum.sci.kyushu-u.ac.jp. Retrieved 2019-10-11.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=museum.sci.kyushu-u.ac.jp&rft.atitle=Zencho%28water%29-3+%28English%29&rft_id=http%3A%2F%2Fmuseum.sci.kyushu-u.ac.jp%2Fe%2Fpart3-e%2Fp4-e%2Fzencho_w3-e.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-11"><a href="#cite_ref-11">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://museum.sci.kyushu-u.ac.jp/e/part3-e/p5-e/funen-e.html">"Funen_Katsudou (English)"</a>. museum.sci.kyushu-u.ac.jp. Retrieved 2019-10-11.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=museum.sci.kyushu-u.ac.jp&rft.atitle=Funen_Katsudou+%28English%29&rft_id=http%3A%2F%2Fmuseum.sci.kyushu-u.ac.jp%2Fe%2Fpart3-e%2Fp5-e%2Ffunen-e.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-12"><a href="#cite_ref-12">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20060620011230/http://hakone.eri.u-tokyo.ac.jp/unzen/chr-1.htm">"Before Extrusion of Lava"</a>. Archived from <a rel="nofollow" class="external text" href="http://hakone.eri.u-tokyo.ac.jp/unzen/chr-1.htm">the original</a> on 2006-06-20. Retrieved 2016-09-01.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Before+Extrusion+of+Lava&rft_id=http%3A%2F%2Fhakone.eri.u-tokyo.ac.jp%2Funzen%2Fchr-1.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-13"><a href="#cite_ref-13">^</a> S Connor, <a rel="nofollow" class="external text" href="https://www.independent.co.uk/news/science/the-men-and-women-in-woolly-hats-who-risk-their-lives-to-study-volcanoes-1951954.html">The men and women in wooly hats who risk their lives to study volcanoes</a>, The Independent, 22 April 2010. </li> <li id="cite_note-14"><a href="#cite_ref-14">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFYamamotoTakaradaSuto1993" class="citation cs2">Yamamoto, T.; Takarada, S.; Suto, S. (1993), "Pyroclastic flows from the 1991 eruption of Unzen volcano, Japan", Bulletin of Volcanology, 55 (3): 166, <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/1993BVol...55..166Y">1993BVol...55..166Y</a>, <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1007%2Fbf00301514">10.1007/bf00301514</a>, <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:129148854">129148854</a></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Bulletin+of+Volcanology&rft.atitle=Pyroclastic+flows+from+the+1991+eruption+of+Unzen+volcano%2C+Japan&rft.volume=55&rft.issue=3&rft.pages=166&rft.date=1993&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A129148854%23id-name%3DS2CID&rft_id=info%3Adoi%2F10.1007%2Fbf00301514&rft_id=info%3Abibcode%2F1993BVol...55..166Y&rft.aulast=Yamamoto&rft.aufirst=T.&rft.au=Takarada%2C+S.&rft.au=Suto%2C+S.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-15"><a href="#cite_ref-15">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.hayakawayukio.jp/footage/unzen/index.html">"Untitled Document"</a>. hayakawayukio.jp. Retrieved 2019-10-11.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=hayakawayukio.jp&rft.atitle=Untitled+Document&rft_id=http%3A%2F%2Fwww.hayakawayukio.jp%2Ffootage%2Funzen%2Findex.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-16"><a href="#cite_ref-16">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://museum.sci.kyushu-u.ac.jp/e/part3-e/p18-e/taiseki_2-e.html">"KasairyuuTaisekibutu_1 (English)"</a>. museum.sci.kyushu-u.ac.jp. Retrieved 2019-10-12.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=museum.sci.kyushu-u.ac.jp&rft.atitle=KasairyuuTaisekibutu_1+%28English%29&rft_id=http%3A%2F%2Fmuseum.sci.kyushu-u.ac.jp%2Fe%2Fpart3-e%2Fp18-e%2Ftaiseki_2-e.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-17"><a href="#cite_ref-17">^</a> <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=OJ-sngPi7JI">Video</a> on <a href="/wiki/YouTube_video_(identifier)" class="mw-redirect" title="YouTube video (identifier)">YouTube</a> </li> <li id="cite_note-18"><a href="#cite_ref-18">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation audio-visual cs1 cs1-prop-foreign-lang-source"><a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=e6xRmcwXK4c">1991年6月3日雲仙普賢岳火砕流【まいにち防災】</a> (Video) (in Japanese). <a href="/wiki/All-Nippon_News_Network" title="All-Nippon News Network">ANNnewsCH</a>. Retrieved 2024-05-12 – via YouTube.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=1991%E5%B9%B46%E6%9C%883%E6%97%A5+%E9%9B%B2%E4%BB%99%E6%99%AE%E8%B3%A2%E5%B2%B3%E7%81%AB%E7%A0%95%E6%B5%81%E3%80%90%E3%81%BE%E3%81%84%E3%81%AB%E3%81%A1%E9%98%B2%E7%81%BD%E3%80%91&rft.pub=ANNnewsCH&rft_id=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3De6xRmcwXK4c&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-19"><a href="#cite_ref-19">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFダン" class="citation web cs1 cs1-prop-foreign-lang-source">ダン, モノホシ. <a rel="nofollow" class="external text" href="https://www.travel.co.jp/guide/article/25420/">"雲仙普賢岳の災害遺構～いまだ消えない悲しみの記録～ | 長崎県"</a>. LINEトラベルjp 旅行ガイド (in Japanese). Retrieved 2019-09-25.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=LINE%E3%83%88%E3%83%A9%E3%83%99%E3%83%ABjp+%E6%97%85%E8%A1%8C%E3%82%AC%E3%82%A4%E3%83%89&rft.atitle=%E9%9B%B2%E4%BB%99%E6%99%AE%E8%B3%A2%E5%B2%B3%E3%81%AE%E7%81%BD%E5%AE%B3%E9%81%BA%E6%A7%8B%EF%BD%9E%E3%81%84%E3%81%BE%E3%81%A0%E6%B6%88%E3%81%88%E3%81%AA%E3%81%84%E6%82%B2%E3%81%97%E3%81%BF%E3%81%AE%E8%A8%98%E9%8C%B2%EF%BD%9E+%7C+%E9%95%B7%E5%B4%8E%E7%9C%8C&rft.aulast=%E3%83%80%E3%83%B3&rft.aufirst=%E3%83%A2%E3%83%8E%E3%83%9B%E3%82%B7&rft_id=https%3A%2F%2Fwww.travel.co.jp%2Fguide%2Farticle%2F25420%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-20"><a href="#cite_ref-20">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation cs2"><a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=1NmfPX-24vE">雲仙火砕流災害直前まで撮られていた定点での映像</a>, <a rel="nofollow" class="external text" href="https://ghostarchive.org/varchive/youtube/20211221/1NmfPX-24vE">archived</a> from the original on 2021-12-21, retrieved 2019-09-25</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=%E9%9B%B2%E4%BB%99%E7%81%AB%E7%A0%95%E6%B5%81%E7%81%BD%E5%AE%B3+%E7%9B%B4%E5%89%8D%E3%81%BE%E3%81%A7%E6%92%AE%E3%82%89%E3%82%8C%E3%81%A6%E3%81%84%E3%81%9F%E5%AE%9A%E7%82%B9%E3%81%A7%E3%81%AE%E6%98%A0%E5%83%8F&rft_id=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3D1NmfPX-24vE&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-21"><a href="#cite_ref-21">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://studylib.net/doc/7635141/ebsco-publishing-citation-format--mla--modern-language-assoc">"EBSCO Publishing Citation Format: MLA (Modern Language Assoc"</a>. studylib.net. Retrieved 2019-09-24.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=studylib.net&rft.atitle=EBSCO+Publishing+Citation+Format%3A+MLA+%28Modern+Language+Assoc&rft_id=https%3A%2F%2Fstudylib.net%2Fdoc%2F7635141%2Febsco-publishing-citation-format--mla--modern-language-assoc&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-22"><a href="#cite_ref-22">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.photovolcanica.com/VolcanoInfo/Unzen/Unzen.html">"Unzen Volcano"</a>. photovolcanica.com. Retrieved 2019-09-24.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=photovolcanica.com&rft.atitle=Unzen+Volcano&rft_id=http%3A%2F%2Fwww.photovolcanica.com%2FVolcanoInfo%2FUnzen%2FUnzen.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-23"><a href="#cite_ref-23">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation cs2"><a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=0pFhYZw7PdA&list=LLshqiKx9DonZD2dtIfk4bLA&index=11">Os diabos dos Vulcões</a>, retrieved 2019-09-24</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Os+diabos+dos+Vulc%C3%B5es&rft_id=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3D0pFhYZw7PdA%26list%3DLLshqiKx9DonZD2dtIfk4bLA%26index%3D11&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988">[<a href="/wiki/Wikipedia:Link_rot" title="Wikipedia:Link rot">dead YouTube link</a>] </li> <li id="cite_note-Unzen_Volcano-24">^ <a href="#cite_ref-Unzen_Volcano_24-0">a</a> <a href="#cite_ref-Unzen_Volcano_24-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.photovolcanica.com/VolcanoInfo/Unzen/Unzen.html">"Unzen Volcano"</a>. photovolcanica.com. Retrieved 2019-10-11.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=photovolcanica.com&rft.atitle=Unzen+Volcano&rft_id=http%3A%2F%2Fwww.photovolcanica.com%2FVolcanoInfo%2FUnzen%2FUnzen.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-Williams_2001_https://archive.org/details/survivinggaleras00stan/page/125_125-25">^ <a href="#cite_ref-Williams_2001_https://archive.org/details/survivinggaleras00stan/page/125_125_25-0">a</a> <a href="#cite_ref-Williams_2001_https://archive.org/details/survivinggaleras00stan/page/125_125_25-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWilliams2001" class="citation book cs1">Williams, Stanley (2001). <a rel="nofollow" class="external text" href="https://archive.org/details/survivinggaleras00stan">Surviving Galeras</a>. Houghton Mifflin. pp. <a rel="nofollow" class="external text" href="https://archive.org/details/survivinggaleras00stan/page/125">125</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/9780618031689" title="Special:BookSources/9780618031689"><bdi>9780618031689</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Surviving+Galeras&rft.pages=125&rft.pub=Houghton+Mifflin&rft.date=2001&rft.isbn=9780618031689&rft.aulast=Williams&rft.aufirst=Stanley&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fsurvivinggaleras00stan&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-26"><a href="#cite_ref-26">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://museum.sci.kyushu-u.ac.jp/e/part3-e/p9-e/dome_seicho_1-e.html">"Dome_Seicho_1 (English)"</a>. museum.sci.kyushu-u.ac.jp. Retrieved 2019-10-11.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=museum.sci.kyushu-u.ac.jp&rft.atitle=Dome_Seicho_1+%28English%29&rft_id=http%3A%2F%2Fmuseum.sci.kyushu-u.ac.jp%2Fe%2Fpart3-e%2Fp9-e%2Fdome_seicho_1-e.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-27"><a href="#cite_ref-27">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.gettyimages.co.nz/detail/news-photo/in-this-aerial-image-a-lava-dome-is-seen-at-the-summit-of-news-photo/901605656">"In this aerial image, A lava dome is seen at the summit of Mt..."</a> Getty Images. 4 January 2018. Retrieved 2019-10-11.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Getty+Images&rft.atitle=In+this+aerial+image%2C+A+lava+dome+is+seen+at+the+summit+of+Mt...&rft.date=2018-01-04&rft_id=https%3A%2F%2Fwww.gettyimages.co.nz%2Fdetail%2Fnews-photo%2Fin-this-aerial-image-a-lava-dome-is-seen-at-the-summit-of-news-photo%2F901605656&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-28"><a href="#cite_ref-28">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.gettyimages.co.nz/detail/news-photo/in-this-aerial-image-kitakamikoba-area-is-covered-with-news-photo/901605990">"In this aerial image, Kitakamikoba area is covered with volcanic..."</a> Getty Images. 4 January 2018. Retrieved 2019-10-11.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Getty+Images&rft.atitle=In+this+aerial+image%2C+Kitakamikoba+area+is+covered+with+volcanic...&rft.date=2018-01-04&rft_id=https%3A%2F%2Fwww.gettyimages.co.nz%2Fdetail%2Fnews-photo%2Fin-this-aerial-image-kitakamikoba-area-is-covered-with-news-photo%2F901605990&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-29"><a href="#cite_ref-29">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSigurdsson1999" class="citation book cs1">Sigurdsson, Haraldur (1999). Encyclopedia of Volcanoes. p. 951.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Encyclopedia+of+Volcanoes&rft.pages=951&rft.date=1999&rft.aulast=Sigurdsson&rft.aufirst=Haraldur&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-30"><a href="#cite_ref-30">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://museum.sci.kyushu-u.ac.jp/e/part3-e/p1-e/aramashi-e.html#top">"Overview (Japanese)"</a>. museum.sci.kyushu-u.ac.jp. Retrieved 2019-10-11.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=museum.sci.kyushu-u.ac.jp&rft.atitle=Overview+%28Japanese%29&rft_id=http%3A%2F%2Fmuseum.sci.kyushu-u.ac.jp%2Fe%2Fpart3-e%2Fp1-e%2Faramashi-e.html%23top&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-yt-unzeneruptionvideo-31"><a href="#cite_ref-yt-unzeneruptionvideo_31-0">^</a> <a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=Cvjwt9nnwXY">Dome collapse and pyroclastic flow at Unzen Volcano</a> on <a href="/wiki/YouTube_video_(identifier)" class="mw-redirect" title="YouTube video (identifier)">YouTube</a> </li> <li id="cite_note-32"><a href="#cite_ref-32">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.photovolcanica.com/VolcanoInfo/Unzen/Unzen.html">"Unzen Volcano"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Unzen+Volcano&rft_id=http%3A%2F%2Fwww.photovolcanica.com%2FVolcanoInfo%2FUnzen%2FUnzen.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-33"><a href="#cite_ref-33">^</a> Uto, Kozo; Nakada Setsuya <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.eri.u-tokyo.ac.jp/KAZANKYO/n_report/74.pdf">"Unzen Scientific Drilling Project"</a> (PDF).</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Unzen+Scientific+Drilling+Project&rft_id=http%3A%2F%2Fwww.eri.u-tokyo.ac.jp%2FKAZANKYO%2Fn_report%2F74.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> (519 KB). <a href="/wiki/Earthquake_Research_Institute,_University_of_Tokyo" title="Earthquake Research Institute, University of Tokyo">Earthquake Research Institute, University of Tokyo</a>. Retrieved 28 October 2010. </li> <li id="cite_note-34"><a href="#cite_ref-34">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1 cs1-prop-script"><a rel="nofollow" class="external text" href="http://www.data.jma.go.jp/obd/stats/etrn/view/rank_s.php?prec_no=84&block_no=47818&year=&month=&day=&view="><bdi lang="ja">観測史上1～10位の値（年間を通じての値）</bdi></a>. <a href="/wiki/Japan_Meteorological_Agency" title="Japan Meteorological Agency">JMA</a>. Retrieved February 16, 2022.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=%E8%A6%B3%E6%B8%AC%E5%8F%B2%E4%B8%8A1%EF%BD%9E10%E4%BD%8D%E3%81%AE%E5%80%A4%EF%BC%88%E5%B9%B4%E9%96%93%E3%82%92%E9%80%9A%E3%81%98%E3%81%A6%E3%81%AE%E5%80%A4%EF%BC%89&rft.pub=JMA&rft_id=http%3A%2F%2Fwww.data.jma.go.jp%2Fobd%2Fstats%2Fetrn%2Fview%2Frank_s.php%3Fprec_no%3D84%26block_no%3D47818%26year%3D%26month%3D%26day%3D%26view%3D&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> <li id="cite_note-35"><a href="#cite_ref-35">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1 cs1-prop-script"><a rel="nofollow" class="external text" href="http://www.data.jma.go.jp/obd/stats/etrn/view/nml_sfc_ym.php?prec_no=84&block_no=47818&year=&month=&day=&view="><bdi lang="ja">気象庁 / 平年値（年・月ごとの値）</bdi></a>. <a href="/wiki/Japan_Meteorological_Agency" title="Japan Meteorological Agency">JMA</a>. Retrieved February 16, 2022.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=%E6%B0%97%E8%B1%A1%E5%BA%81+%2F+%E5%B9%B3%E5%B9%B4%E5%80%A4%EF%BC%88%E5%B9%B4%E3%83%BB%E6%9C%88%E3%81%94%E3%81%A8%E3%81%AE%E5%80%A4%EF%BC%89&rft.pub=JMA&rft_id=http%3A%2F%2Fwww.data.jma.go.jp%2Fobd%2Fstats%2Fetrn%2Fview%2Fnml_sfc_ym.php%3Fprec_no%3D84%26block_no%3D47818%26year%3D%26month%3D%26day%3D%26view%3D&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> </li> </ol></div></div> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(10)"><h2 id="Bibliography">Bibliography</h2> <a role="button" href="/w/index.php?title=Mount_Unzen&action=edit&section=17" title="Edit section: Bibliography" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-10 collapsible-block" id="mf-section-10"> <style data-mw-deduplicate="TemplateStyles:r1239549316">.mw-parser-output .refbegin{margin-bottom:0.5em}.mw-parser-output .refbegin-hanging-indents>ul{margin-left:0}.mw-parser-output .refbegin-hanging-indents>ul>li{margin-left:0;padding-left:3.2em;text-indent:-3.2em}.mw-parser-output .refbegin-hanging-indents ul,.mw-parser-output .refbegin-hanging-indents ul li{list-style:none}@media(max-width:720px){.mw-parser-output .refbegin-hanging-indents>ul>li{padding-left:1.6em;text-indent:-1.6em}}.mw-parser-output .refbegin-columns{margin-top:0.3em}.mw-parser-output .refbegin-columns ul{margin-top:0}.mw-parser-output .refbegin-columns li{page-break-inside:avoid;break-inside:avoid-column}@media screen{.mw-parser-output .refbegin{font-size:90%}}</style><div class="refbegin" style=""> <ul><li>Hoshizumi H., Uto K., Matsumoto A. (2001), Core stratigraphy of the Unzen Scientific Drilling: Volcanic History of the Unzen Volcano, Kyūshū, SW Japan, American Geophysical Union, Fall Meeting 2001</li> <li>Hoshizumi H., Uto K., Matsumoto A., Kurihara A. (2004), Growth History of Unzen Volcano, Kyūshū, Japan, American Geophysical Union, Fall Meeting 2004</li> <li>Sakuma S., Nakada S., Uto K. (2004), Unzen Scientific Drilling Project: Challenging drilling operation into the magmatic conduit shortly after eruption, American Geophysical Union, Fall Meeting 2004</li> <li>Uto K., Hoshizumi H., Matsumoto A., Oguri K., Nguyen H. (2001), Volcanotectonic history of Shimabara Peninsula and the evolution of Unzen volcano in Southwest Japan, American Geophysical Union, Fall Meeting 2001</li> <li>Uto K., Nakada S., Shimizu H., Sakuma S., Hoshizumi H. (2004), Overview and the achievement of the Unzen Scientific Drilling Project, American Geophysical Union, Fall Meeting 2004</li></ul> </div> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(11)"><h2 id="External_links">External links</h2> <a role="button" href="/w/index.php?title=Mount_Unzen&action=edit&section=18" title="Edit section: External links" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-11 collapsible-block" id="mf-section-11"> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:var(--background-color-interactive-subtle,#f8f9fa);display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1;min-width:0}}@media(min-width:720px){.mw-parser-output .side-box{width:238px}.mw-parser-output .side-box-right{clear:right;float:right;margin-left:1em}.mw-parser-output .side-box-left{margin-right:1em}}</style><style data-mw-deduplicate="TemplateStyles:r1237033735">@media print{body.ns-0 .mw-parser-output .sistersitebox{display:none!important}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}</style><div class="side-box side-box-right plainlinks sistersitebox"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style> <div class="side-box-flex"> <div class="side-box-image"><a href="/wiki/File:Commons-logo.svg" class="mw-file-description"><noscript><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png" decoding="async" width="30" height="40" class="mw-file-element" data-file-width="1024" data-file-height="1376"></noscript><span class="lazy-image-placeholder" style="width: 30px;height: 40px;" data-mw-src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png" data-alt="" data-width="30" data-height="40" data-srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/45px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/59px-Commons-logo.svg.png 2x" data-class="mw-file-element"> </a></div> <div class="side-box-text plainlist">Wikimedia Commons has media related to <a href="https://commons.wikimedia.org/wiki/Category:Mount_Unzen" class="extiw" title="commons:Category:Mount Unzen">Mount Unzen</a>.</div></div> </div> <ul><li><a rel="nofollow" class="external text" href="http://www.data.jma.go.jp/svd/vois/data/fukuoka/504_Unzendake/504_index.html">Unzendake</a> – Japan Meteorological Agency (in Japanese)</li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.data.jma.go.jp/svd/vois/data/tokyo/STOCK/souran_eng/volcanoes/085_unzendake.pdf">"Unzendake: National catalogue of the active volcanoes in Japan"</a> (PDF).</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Unzendake%3A+National+catalogue+of+the+active+volcanoes+in+Japan&rft_id=http%3A%2F%2Fwww.data.jma.go.jp%2Fsvd%2Fvois%2Fdata%2Ftokyo%2FSTOCK%2Fsouran_eng%2Fvolcanoes%2F085_unzendake.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AMount+Unzen" class="Z3988"> – Japan Meteorological Agency</li> <li><a rel="nofollow" class="external text" href="https://gbank.gsj.jp/volcano/Act_Vol/unzen/index-e.html">Unzen Volcano</a> – Geological Survey of Japan</li> <li><a rel="nofollow" class="external text" href="http://www.geotimes.org/mar04/feature_Unzen.html">Looking Into a Volcano: Drilling Unzen</a> – Geotimes</li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist 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td.hlist ul{padding:0.125em 0}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}body.skin--responsive .mw-parser-output .navbox-image img{max-width:none!important}@media print{body.ns-0 .mw-parser-output .navbox{display:none!important}}</style></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div>    </section></div> <noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=mobile&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Mount_Unzen&oldid=1275187885">https://en.wikipedia.org/w/index.php?title=Mount_Unzen&oldid=1275187885</a>"</div></div> </div> <div class="post-content" id="page-secondary-actions"> </div> </main> <footer class="mw-footer minerva-footer" role="contentinfo"> <a class="last-modified-bar" href="/w/index.php?title=Mount_Unzen&action=history"> <div class="post-content last-modified-bar__content"> Last edited on 11 February 2025, at 16:01 </div> </a> <div class="post-content footer-content"> <div id='mw-data-after-content'> <div class="read-more-container"></div> </div> <div id="p-lang"> <h4>Languages</h4> <section> <ul id="p-variants" class="minerva-languages"></ul> <ul class="minerva-languages"><li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Unzen" title="Unzen – Afrikaans" lang="af" hreflang="af" data-title="Unzen" data-language-autonym="Afrikaans" data-language-local-name="Afrikaans" class="interlanguage-link-target">Afrikaans</a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AC%D8%A8%D9%84_%D8%A3%D9%88%D9%86%D8%B2%D9%8A%D9%86" title="جبل أونزين – Arabic" lang="ar" hreflang="ar" data-title="جبل أونزين" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target">العربية</a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Monte_Unzen" title="Monte Unzen – Asturian" lang="ast" hreflang="ast" data-title="Monte Unzen" data-language-autonym="Asturianu" data-language-local-name="Asturian" class="interlanguage-link-target">Asturianu</a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Mont_Unzen" title="Mont Unzen – Catalan" lang="ca" hreflang="ca" data-title="Mont Unzen" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target">Català</a></li><li class="interlanguage-link interwiki-ceb mw-list-item"><a href="https://ceb.wikipedia.org/wiki/Unzen-dake" title="Unzen-dake – Cebuano" lang="ceb" hreflang="ceb" data-title="Unzen-dake" data-language-autonym="Cebuano" data-language-local-name="Cebuano" class="interlanguage-link-target">Cebuano</a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Unzen" title="Unzen – Czech" lang="cs" hreflang="cs" data-title="Unzen" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target">Čeština</a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Unzen" title="Unzen – Welsh" lang="cy" hreflang="cy" data-title="Unzen" data-language-autonym="Cymraeg" data-language-local-name="Welsh" class="interlanguage-link-target">Cymraeg</a></li><li class="interlanguage-link interwiki-de badge-Q17437798 badge-goodarticle mw-list-item" title="good article badge"><a href="https://de.wikipedia.org/wiki/Unzen_(Vulkan)" title="Unzen (Vulkan) – German" lang="de" hreflang="de" data-title="Unzen (Vulkan)" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target">Deutsch</a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%8C%CF%81%CE%BF%CF%82_%CE%9F%CF%8D%CE%BD%CE%B6%CE%B5%CE%BD" title="Όρος Ούνζεν – Greek" lang="el" hreflang="el" data-title="Όρος Ούνζεν" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target">Ελληνικά</a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Monte_Unzen" title="Monte Unzen – Spanish" lang="es" hreflang="es" data-title="Monte Unzen" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target">Español</a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Unzen_(mendia)" title="Unzen (mendia) – Basque" lang="eu" hreflang="eu" data-title="Unzen (mendia)" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target">Euskara</a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%DA%A9%D9%88%D9%87_%D8%A7%D9%88%D9%86%D8%B2%D9%86" title="کوه اونزن – Persian" lang="fa" hreflang="fa" data-title="کوه اونزن" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target">فارسی</a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Mont_Unzen" title="Mont Unzen – French" lang="fr" hreflang="fr" data-title="Mont Unzen" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target">Français</a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%9A%B4%EC%A0%A0%EC%82%B0" title="운젠산 – Korean" lang="ko" hreflang="ko" data-title="운젠산" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target">한국어</a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%AE%E0%A4%BE%E0%A4%89%E0%A4%A3%E0%A5%8D%E0%A4%9F%E0%A5%8C%E0%A4%A8%E0%A4%9C%E0%A4%A8%E0%A5%87" title="माउण्टौनजने – Hindi" lang="hi" hreflang="hi" data-title="माउण्टौनजने" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target">हिन्दी</a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Gunung_Unzen" title="Gunung Unzen – Indonesian" lang="id" hreflang="id" data-title="Gunung Unzen" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target">Bahasa Indonesia</a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Monte_Unzen" title="Monte Unzen – Italian" lang="it" hreflang="it" data-title="Monte Unzen" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target">Italiano</a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%90%D7%95%D7%A0%D7%96%D7%9F" title="אונזן – Hebrew" lang="he" hreflang="he" data-title="אונזן" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target">עברית</a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%A3%D0%BD%D0%B7%D0%B5%D0%BD_(%D0%B2%D1%83%D0%BB%D0%BA%D0%B0%D0%BD)" title="Унзен (вулкан) – Macedonian" lang="mk" hreflang="mk" data-title="Унзен (вулкан)" data-language-autonym="Македонски" data-language-local-name="Macedonian" class="interlanguage-link-target">Македонски</a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D8%AC%D8%A8%D9%84_%D8%A7%D9%88%D9%86%D8%B2%D9%8A%D9%86" title="جبل اونزين – Egyptian Arabic" lang="arz" hreflang="arz" data-title="جبل اونزين" data-language-autonym="مصرى" data-language-local-name="Egyptian Arabic" class="interlanguage-link-target">مصرى</a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Unzen_(vulkaan)" title="Unzen (vulkaan) – Dutch" lang="nl" hreflang="nl" data-title="Unzen (vulkaan)" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target">Nederlands</a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E9%9B%B2%E4%BB%99%E5%B2%B3" title="雲仙岳 – Japanese" lang="ja" hreflang="ja" data-title="雲仙岳" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target">日本語</a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Unzen" title="Unzen – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Unzen" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target">Norsk bokmål</a></li><li class="interlanguage-link interwiki-nrm mw-list-item"><a href="https://nrm.wikipedia.org/wiki/Mount_Unzen" title="Mount Unzen – Norman" lang="nrf" hreflang="nrf" data-title="Mount Unzen" data-language-autonym="Nouormand" data-language-local-name="Norman" class="interlanguage-link-target">Nouormand</a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Mont_Unzen" title="Mont Unzen – Occitan" lang="oc" hreflang="oc" data-title="Mont Unzen" data-language-autonym="Occitan" data-language-local-name="Occitan" class="interlanguage-link-target">Occitan</a></li><li class="interlanguage-link interwiki-pcd mw-list-item"><a href="https://pcd.wikipedia.org/wiki/Unzen" title="Unzen – Picard" lang="pcd" hreflang="pcd" data-title="Unzen" data-language-autonym="Picard" data-language-local-name="Picard" class="interlanguage-link-target">Picard</a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Unzen_(wulkan)" title="Unzen (wulkan) – Polish" lang="pl" hreflang="pl" data-title="Unzen (wulkan)" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target">Polski</a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Monte_Unzen" title="Monte Unzen – Portuguese" lang="pt" hreflang="pt" data-title="Monte Unzen" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target">Português</a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Unzen_(vulcan)" title="Unzen (vulcan) – Romanian" lang="ro" hreflang="ro" data-title="Unzen (vulcan)" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target">Română</a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A3%D0%BD%D0%B4%D0%B7%D0%B5%D0%BD_(%D0%B2%D1%83%D0%BB%D0%BA%D0%B0%D0%BD)" title="Ундзен (вулкан) – Russian" lang="ru" hreflang="ru" data-title="Ундзен (вулкан)" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target">Русский</a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Mount_Unzen" title="Mount Unzen – Simple English" lang="en-simple" hreflang="en-simple" data-title="Mount Unzen" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target">Simple English</a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Unzen" title="Unzen – Slovak" lang="sk" hreflang="sk" data-title="Unzen" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target">Slovenčina</a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Unzen_(gora)" title="Unzen (gora) – Slovenian" lang="sl" hreflang="sl" data-title="Unzen (gora)" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target">Slovenščina</a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Unzen" title="Unzen – Finnish" lang="fi" hreflang="fi" data-title="Unzen" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target">Suomi</a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Unzen_Da%C4%9F%C4%B1" title="Unzen Dağı – Turkish" lang="tr" hreflang="tr" data-title="Unzen Dağı" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target">Türkçe</a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A3%D0%BD%D0%B4%D0%B7%D0%B5%D0%BD_(%D0%B2%D1%83%D0%BB%D0%BA%D0%B0%D0%BD)" title="Ундзен (вулкан) – Ukrainian" lang="uk" hreflang="uk" data-title="Ундзен (вулкан)" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target">Українська</a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/N%C3%BAi_Unzen" title="Núi Unzen – Vietnamese" lang="vi" hreflang="vi" data-title="Núi Unzen" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target">Tiếng Việt</a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E4%BA%91%E4%BB%99%E5%B2%B3" title="云仙岳 – Wu" lang="wuu" hreflang="wuu" data-title="云仙岳" data-language-autonym="吴语" data-language-local-name="Wu" class="interlanguage-link-target">吴语</a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E9%9B%B2%E4%BB%99%E5%B2%B3" title="雲仙岳 – Cantonese" lang="yue" hreflang="yue" data-title="雲仙岳" data-language-autonym="粵語" data-language-local-name="Cantonese" class="interlanguage-link-target">粵語</a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E9%9B%B2%E4%BB%99%E5%B2%B3" title="雲仙岳 – Chinese" lang="zh" hreflang="zh" data-title="雲仙岳" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target">中文</a></li></ul> </section> </div> <div class="minerva-footer-logo"><img src="/static/images/mobile/copyright/wikipedia-wordmark-en.svg" alt="Wikipedia" width="120" height="18" style="width: 7.5em; height: 1.125em;"/> </div> <ul id="footer-info" class="footer-info hlist hlist-separated"> <li id="footer-info-lastmod"> This page was 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