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[o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Logg inn</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Sider for utlogga bidragsytarar <a href="/wiki/Hjelp:Introduksjon" aria-label="Lær meir om redigering"><span>lær meir</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Spesial:Bidraga_mine" title="Liste over endringar gjorde frå denne IP-adressa [y]" accesskey="y"><span>Bidrag</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Spesial:Diskusjonssida_mi" title="Diskusjon om endringar gjorde av denne ip-adressa [n]" accesskey="n"><span>Diskusjon</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Nettstad"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Innhald" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Innhald</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">flytt til sidefeltet</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">gøym</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Byrjinga</div> </a> </li> <li id="toc-Kjelder" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Kjelder"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Kjelder</span> </div> </a> <ul id="toc-Kjelder-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Innhald" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Vis/skjul innhaldslista" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Vis/skjul innhaldslista</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Freatisk utbrot</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Gå til ein artikkel på eit anna språk. Tilgjengeleg på 31 språk" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-31" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">31 språk</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Freatisk_utbrudd" title="Freatisk utbrudd – norsk bokmål" lang="nb" hreflang="nb" data-title="Freatisk utbrudd" data-language-autonym="Norsk bokmål" data-language-local-name="norsk bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Freatiskt_utbrott" title="Freatiskt utbrott – svensk" lang="sv" hreflang="sv" data-title="Freatiskt utbrott" data-language-autonym="Svenska" data-language-local-name="svensk" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Freatiese_uitbarsting" title="Freatiese uitbarsting – afrikaans" lang="af" hreflang="af" data-title="Freatiese uitbarsting" data-language-autonym="Afrikaans" data-language-local-name="afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AB%D9%88%D8%B1%D8%A7%D9%86_%D8%AA%D8%AF%D9%81%D9%82%D9%8A" title="ثوران تدفقي – arabisk" lang="ar" hreflang="ar" data-title="ثوران تدفقي" data-language-autonym="العربية" data-language-local-name="arabisk" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%A4%D1%80%D0%B5%D0%B0%D1%82%D0%B8%D1%87%D0%BD%D0%BE_%D0%B2%D1%83%D0%BB%D0%BA%D0%B0%D0%BD%D0%B8%D1%87%D0%BD%D0%BE_%D0%B8%D0%B7%D1%80%D0%B8%D0%B3%D0%B2%D0%B0%D0%BD%D0%B5" title="Фреатично вулканично изригване – bulgarsk" lang="bg" hreflang="bg" data-title="Фреатично вулканично изригване" data-language-autonym="Български" data-language-local-name="bulgarsk" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Erupci%C3%B3_fre%C3%A0tica" title="Erupció freàtica – katalansk" lang="ca" hreflang="ca" data-title="Erupció freàtica" data-language-autonym="Català" data-language-local-name="katalansk" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Freatick%C3%A1_erupce" title="Freatická erupce – tsjekkisk" lang="cs" hreflang="cs" data-title="Freatická erupce" data-language-autonym="Čeština" data-language-local-name="tsjekkisk" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Phreatische_Explosion" title="Phreatische Explosion – tysk" lang="de" hreflang="de" data-title="Phreatische Explosion" data-language-autonym="Deutsch" data-language-local-name="tysk" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%A6%CF%81%CE%B5%CE%B1%CF%84%CE%B9%CE%BA%CE%AE_%CE%AD%CE%BA%CF%81%CE%B7%CE%BE%CE%B7" title="Φρεατική έκρηξη – gresk" lang="el" hreflang="el" data-title="Φρεατική έκρηξη" data-language-autonym="Ελληνικά" data-language-local-name="gresk" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Phreatic_eruption" title="Phreatic eruption – engelsk" lang="en" hreflang="en" data-title="Phreatic eruption" data-language-autonym="English" data-language-local-name="engelsk" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Erupci%C3%B3n_fre%C3%A1tica" title="Erupción freática – spansk" lang="es" hreflang="es" data-title="Erupción freática" data-language-autonym="Español" data-language-local-name="spansk" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Erupzio_freatiko" title="Erupzio freatiko – baskisk" lang="eu" hreflang="eu" data-title="Erupzio freatiko" data-language-autonym="Euskara" data-language-local-name="baskisk" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%81%D9%88%D8%B1%D8%A7%D9%86_%D8%A7%D8%B4%D8%A8%D8%A7%D8%B9%DB%8C" title="فوران اشباعی – persisk" lang="fa" hreflang="fa" data-title="فوران اشباعی" data-language-autonym="فارسی" data-language-local-name="persisk" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/%C3%89ruption_phr%C3%A9atique" title="Éruption phréatique – fransk" lang="fr" hreflang="fr" data-title="Éruption phréatique" data-language-autonym="Français" data-language-local-name="fransk" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%88%98%EC%A6%9D%EA%B8%B0_%EB%B6%84%ED%99%94" title="수증기 분화 – koreansk" lang="ko" hreflang="ko" data-title="수증기 분화" data-language-autonym="한국어" data-language-local-name="koreansk" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Letusan_freatik" title="Letusan freatik – indonesisk" lang="id" hreflang="id" data-title="Letusan freatik" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesisk" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Sprengigos" title="Sprengigos – islandsk" lang="is" hreflang="is" data-title="Sprengigos" data-language-autonym="Íslenska" data-language-local-name="islandsk" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Eruzione_di_tipo_freatico" title="Eruzione di tipo freatico – italiensk" lang="it" hreflang="it" data-title="Eruzione di tipo freatico" data-language-autonym="Italiano" data-language-local-name="italiensk" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%94%D7%AA%D7%A4%D7%A8%D7%A6%D7%95%D7%AA_%D7%A4%D7%A8%D7%99%D7%90%D7%98%D7%99%D7%AA" title="התפרצות פריאטית – hebraisk" lang="he" hreflang="he" data-title="התפרצות פריאטית" data-language-autonym="עברית" data-language-local-name="hebraisk" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%A4%D1%80%D0%B5%D0%B0%D1%82%D0%B8%D1%87%D0%B5%D0%BD_%D0%B8%D0%B7%D0%B1%D1%83%D0%B2" title="Фреатичен избув – makedonsk" lang="mk" hreflang="mk" data-title="Фреатичен избув" data-language-autonym="Македонски" data-language-local-name="makedonsk" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Freatische_eruptie" title="Freatische eruptie – nederlandsk" lang="nl" hreflang="nl" data-title="Freatische eruptie" data-language-autonym="Nederlands" data-language-local-name="nederlandsk" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E6%B0%B4%E8%92%B8%E6%B0%97%E7%88%86%E7%99%BA" title="水蒸気爆発 – japansk" lang="ja" hreflang="ja" data-title="水蒸気爆発" data-language-autonym="日本語" data-language-local-name="japansk" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Erupcion_freatica" title="Erupcion freatica – oksitansk" lang="oc" hreflang="oc" data-title="Erupcion freatica" data-language-autonym="Occitan" data-language-local-name="oksitansk" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Freatik_portlash" title="Freatik portlash – usbekisk" lang="uz" hreflang="uz" data-title="Freatik portlash" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="usbekisk" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Erupcja_freatyczna" title="Erupcja freatyczna – polsk" lang="pl" hreflang="pl" data-title="Erupcja freatyczna" data-language-autonym="Polski" data-language-local-name="polsk" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Erup%C3%A7%C3%A3o_fre%C3%A1tica" title="Erupção freática – portugisisk" lang="pt" hreflang="pt" data-title="Erupção freática" data-language-autonym="Português" data-language-local-name="portugisisk" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A4%D1%80%D0%B5%D0%B0%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9_%D0%B2%D0%B7%D1%80%D1%8B%D0%B2" title="Фреатический взрыв – russisk" lang="ru" hreflang="ru" data-title="Фреатический взрыв" data-language-autonym="Русский" data-language-local-name="russisk" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Freatska_erupcija" title="Freatska erupcija – slovensk" lang="sl" hreflang="sl" data-title="Freatska erupcija" data-language-autonym="Slovenščina" data-language-local-name="slovensk" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Freaattinen_purkaus" title="Freaattinen purkaus – finsk" lang="fi" hreflang="fi" data-title="Freaattinen purkaus" data-language-autonym="Suomi" data-language-local-name="finsk" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A4%D1%80%D0%B5%D0%B0%D1%82%D0%B8%D1%87%D0%BD%D0%B5_%D0%B2%D0%B8%D0%B2%D0%B5%D1%80%D0%B6%D0%B5%D0%BD%D0%BD%D1%8F" title="Фреатичне виверження – ukrainsk" lang="uk" hreflang="uk" data-title="Фреатичне виверження" data-language-autonym="Українська" data-language-local-name="ukrainsk" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E6%BD%9C%E6%B0%B4%E8%92%B8%E6%B0%94%E5%96%B7%E5%8F%91" title="潜水蒸气喷发 – kinesisk" lang="zh" hreflang="zh" data-title="潜水蒸气喷发" data-language-autonym="中文" data-language-local-name="kinesisk" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q1067217#sitelinks-wikipedia" title="Endra mellomspråklege lenkjer" class="wbc-editpage">Endra lenkjer</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namnerom"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Freatisk_utbrot" title="Vis innhaldssida [c]" accesskey="c"><span>Artikkel</span></a></li><li id="ca-talk" class="new vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Diskusjon:Freatisk_utbrot&action=edit&redlink=1" rel="discussion" class="new" title="Diskusjon om innhaldssida (sida finst ikkje) [t]" accesskey="t"><span>Diskusjon</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Endre språkvariant" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">norsk nynorsk</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Visningar"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Freatisk_utbrot"><span>Les</span></a></li><li id="ca-ve-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Freatisk_utbrot&veaction=edit" title="Endre sida [v]" accesskey="v"><span>Endre</span></a></li><li id="ca-edit" class="collapsible vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Freatisk_utbrot&action=edit" title="Endre kjeldekoden til sida [e]" accesskey="e"><span>Endre wikiteksten</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Freatisk_utbrot&action=history" title="Eldre versjonar av sida [h]" 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<div id="siteSub" class="noprint">Frå Wikipedia – det frie oppslagsverket</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="nn" dir="ltr"><figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Fil:Phreatic.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/8/8a/Phreatic.jpg" decoding="async" width="219" height="350" class="mw-file-element" data-file-width="219" data-file-height="350" /></a><figcaption>Freatisk utbrot frå toppen av <a href="/wiki/Mount_St._Helens" title="Mount St. Helens">Mount St. Helens</a> i <a href="/wiki/Washington" title="Washington">Washington</a> i <a href="/wiki/USA" title="USA">USA</a>.</figcaption></figure> <p><b>Freatisk utbrot</b>, òg kalla <b>ultravulkanske utbrot</b>, er eit <a href="/wiki/Vulkanutbrot" class="mw-redirect" title="Vulkanutbrot">vulkanutbrot</a> som oppstår når stigande <a href="/wiki/Magma" title="Magma">magma</a> kjem i kontakt med <a href="/wiki/Grunnvatn" title="Grunnvatn">grunnvatn</a> eller overflatevatn. Den ekstreme temperaturen til magmaen (frå 600 °C til 1170 °C) skapar ein nesten momentan <a href="/wiki/Fordamping" title="Fordamping">fordamping</a> av vatnet som fører til ein eksplosjon av <a href="/wiki/Vassdamp" title="Vassdamp">vassdamp</a>, <a href="/wiki/Vatn" title="Vatn">vatn</a>, <a href="/wiki/Vulkansk_oske" title="Vulkansk oske">vulkansk oske</a>, <a href="/wiki/Stein" title="Stein">stein</a> og <a href="/wiki/Vulkansk_bombe" title="Vulkansk bombe">vulkanske bomber</a>. Ved <a href="/wiki/Mount_St._Helens" title="Mount St. Helens">Mount St. Helens</a> hadde ein hundrevis av dampeksplosjonar før det <a href="/w/index.php?title=Plinisk_utbrot&action=edit&redlink=1" class="new" title="Plinisk utbrot (sida finst ikkje)">pliniske utbrotet</a> til vulkanen i <a href="/wiki/1980" title="1980">1980</a>. Mindre intense <a href="/wiki/Geotermisk" class="mw-redirect" title="Geotermisk">geotermiske</a> tilfelle kan skape ein <a href="/wiki/Slamvulkan" class="mw-redirect" title="Slamvulkan">slamvulkan</a>. </p><p><a href="/w/index.php?title=Freatisk&action=edit&redlink=1" class="new" title="Freatisk (sida finst ikkje)">Freatiske</a> utbrot inneheld vanlegvis damp og steinfragment og <a href="/wiki/Lava" title="Lava">lava</a> er ikkje vanleg. Temperaturen til desse fragmenta kan vere alt frå kalde til glødande. Om smelta stoff er inkludert vert uttrykket <b>freatomagamatisk</b> stundom nytta. Freatiske utbrot dannar stundom breie og låge <a href="/w/index.php?title=Vulkankrater&action=edit&redlink=1" class="new" title="Vulkankrater (sida finst ikkje)">vulkankrater</a> kalla <i><a href="/wiki/Maar" title="Maar">maar</a></i>. Stundom kan utbrota innehelde gassar med <a href="/wiki/Karbondioksid" title="Karbondioksid">karbondioksid</a> eller <a href="/wiki/Hydrogensulfid" title="Hydrogensulfid">hydrogensulfid</a>. Sistnemnde kan føre til kveling og i <a href="/wiki/1979" title="1979">1979</a> førte eit slikt freatisk utbrot til at 149 menneske på øya <a href="/wiki/Java" title="Java">Java</a> mista livet på grunn av giftige gassar. </p><p>Ein meiner at utbrotet til <a href="/w/index.php?title=Krakatoa&action=edit&redlink=1" class="new" title="Krakatoa (sida finst ikkje)">Krakatoa</a> i <a href="/wiki/1883" title="1883">1883</a>, som utsletta det meste av vulkanøya og som skapte den høgaste lyden som er registrert, var eit freatisk utbrot. <a href="/w/index.php?title=Kilauea&action=edit&redlink=1" class="new" title="Kilauea (sida finst ikkje)">Kilauea</a> på <a href="/wiki/Hawaii" title="Hawaii">Hawaii</a> har hatt freatiske utbrot gjennom lange tider. Eit freatisk utbrot i <a href="/wiki/1924" title="1924">1924</a> kasta stein opp til åtte tonn opp til ein kilometer bort frå krateret. Andre døme på freatiske utbrot er <a href="/wiki/Surtsey" title="Surtsey">Surtsey</a> i 1963, <a href="/w/index.php?title=Taal&action=edit&redlink=1" class="new" title="Taal (sida finst ikkje)">Taal</a> i <a href="/wiki/1965" title="1965">1965</a> og <a href="/w/index.php?title=Tarumae&action=edit&redlink=1" class="new" title="Tarumae (sida finst ikkje)">Tarumae</a> i <a href="/wiki/1982" title="1982">1982</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Kjelder">Kjelder</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Freatisk_utbrot&veaction=edit&section=1" title="Endre bolk: Kjelder" class="mw-editsection-visualeditor"><span>endre</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Freatisk_utbrot&action=edit&section=1" title="Rediger kildekoden til seksjonen Kjelder"><span>endre wikiteksten</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="references-small"> <ul><li><i>Denne artikkelen bygger på «<a href="https://en.wikipedia.org/wiki/Phreatic_eruption" class="extiw" title="en:Phreatic eruption">Phreatic eruption</a>» frå <a href="https://en.wikipedia.org/wiki/Main_Page" class="extiw" title="en:Main Page">Wikipedia på engelsk</a>, den 15. november 2007.</i> <ul><li><i><a href="https://en.wikipedia.org/wiki/Main_Page" class="extiw" title="en:Main Page">Wikipedia på engelsk</a> oppgav desse kjeldene:</i></li></ul></li> <li><a rel="nofollow" class="external text" href="https://volcanoes.usgs.gov/Products/Pglossary/HydroVolcEruption.html">volcanoes.usgs.gov</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070810045035/http://volcanoes.usgs.gov/Products/Pglossary/HydroVolcEruption.html">Arkivert</a> 2007-08-10 ved <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>.</li></ul> </div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Henta frå «<a dir="ltr" href="https://nn.wikipedia.org/w/index.php?title=Freatisk_utbrot&oldid=3432130">https://nn.wikipedia.org/w/index.php?title=Freatisk_utbrot&oldid=3432130</a>»</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Kategori:Kategoriar" title="Kategori:Kategoriar">Kategori</a>: <ul><li><a href="/wiki/Kategori:Vulkanutbrot" title="Kategori:Vulkanutbrot">Vulkanutbrot</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Gøymde kategoriar: <ul><li><a href="/wiki/Kategori:Sider_med_Webarchive-mal_som_lenker_til_Wayback_Machine" title="Kategori:Sider med Webarchive-mal som lenker til Wayback Machine">Sider med Webarchive-mal som lenker til Wayback Machine</a></li><li><a href="/wiki/Kategori:Artiklar_utan_autoritetsdata" title="Kategori:Artiklar utan autoritetsdata">Artiklar utan autoritetsdata</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> Denne sida vart sist endra den 17. oktober 2022 kl. 17:04.</li> <li id="footer-info-copyright">All tekst er tilgjengeleg under <a rel="nofollow" class="external text" href="http://creativecommons.org/licenses/by-sa/4.0/deed.no">Creative Commons-lisensen Namngjeving/Del på same vilkåra</a>. 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