AGU Blogosphere

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The lava has the potential to engulf homes and farm fields in its path, so scientists are interested in measuring the direction, speed and distance of flows.</p> <p><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/geospace/2011/12/09/photographing-lava/" class="more">Read More <span class="more-arrow">>></span></a></p> <br class="clearfloat"/> </div> <div class="post entry" id="post-13906"> <p class="date"> 8 December 2011 </p> <h3 class="posttitle"><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/geospace/2011/12/08/eruptions-in-the-lab/" rel="bookmark" title="Permanent Link to Scientists simulate explosive volcanic eruptions in the lab"> Scientists simulate explosive volcanic eruptions in the lab </a></h3> <p>Recipe for a volcano: take some rock powder from a recent eruption (basaltic-andesite works best), combine with some limestone in a small capsule, and cook in a pressure-cooker at 1200 degrees Celsius (2200 Fahrenheit) until gas bubbles form. Serve warm.</p> <p><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/geospace/2011/12/08/eruptions-in-the-lab/" class="more">Read More <span class="more-arrow">>></span></a></p> <br class="clearfloat"/> </div> <div class="post entry" id="post-13241"> <p class="date"> 4 October 2011 </p> <h3 class="posttitle"><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/landslideblog/2011/10/04/geological-evidence-for-a-large-landslide-in-tenerife/" rel="bookmark" title="Permanent Link to Geological evidence for a large landslide in Tenerife"> Geological evidence for a large landslide in Tenerife </a></h3> <p>A brief review of a new paper that describes a newly discovered catastrophic landslide deposit in Tenerife.</p> <p><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/landslideblog/2011/10/04/geological-evidence-for-a-large-landslide-in-tenerife/" class="more">Read More <span class="more-arrow">>></span></a></p> <br class="clearfloat"/> </div> <div class="post entry" id="post-6886"> <p class="date"> 5 January 2011 </p> <h3 class="posttitle"><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/landslideblog/2011/01/05/google-ngrams-the-use-of-the-word-landslide/" rel="bookmark" title="Permanent Link to Google Ngrams – the use of the word “landslide”"> Google Ngrams – the use of the word “landslide” </a></h3> <p>Google now has about a million books online dating from 1500 to 2008. An interesting tool that they have provided, and which is great fun with which to play, is the NGram viewer, which allows the user to search for, and graph, the occurrence of specific words through time in these texts. Note that the data are presented as the use of the word as a percentage of the total words in the …</p> <p><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/landslideblog/2011/01/05/google-ngrams-the-use-of-the-word-landslide/" class="more">Read More <span class="more-arrow">>></span></a></p> <br class="clearfloat"/> </div> <div class="post entry" id="post-6831"> <p class="date"> 27 December 2010 </p> <h3 class="posttitle"><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/meetings/2010/12/27/extreme-natural-hazards-span-the-globe/" rel="bookmark" title="Permanent Link to Extreme natural hazards span the globe"> Extreme natural hazards span the globe </a></h3> <p>I lived in Houston, but our town was dusted by a fine layer of Washington state, 3000 kilometers away after Mount St. Helens blew its top in 1980. But that was really not that remarkable, according to a global database of explosive eruptions presented in FM10′s session on U13B. Similar studies reported throughout the conference–on volcanoes, landslides and tsunami–also assembled global databases of extreme geological hazards to better know when and where such threats might loom.</p> <p><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/meetings/2010/12/27/extreme-natural-hazards-span-the-globe/" class="more">Read More <span class="more-arrow">>></span></a></p> <br class="clearfloat"/> </div> <div class="post entry" id="post-6810"> <p class="date"> 23 December 2010 </p> <h3 class="posttitle"><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/meetings/2010/12/23/volcanic-eruptions-like-popping-the-cork-on-a-magnum-of-champagne/" rel="bookmark" title="Permanent Link to Volcanic eruptions, like popping the cork on a magnum of champagne"> Volcanic eruptions, like popping the cork on a magnum of champagne </a></h3> <p>The holiday dinner of the Northern California Science Writers Association may explain why I have wine on my mind, but the image obsesses AGU volcanologists too, as I learned in two sessions (V33D & V44C) at last week’s AGU Fall Meeting.</p> <p>Geophysicist Oleg Melnik of Moscow State University and the University of Bristol ended his discussion of explosive volcano chemistry and physics with a comic illustration of him pulling a cork from an exploding volcano. But don’t volcanoes uncork themselves? I thought champagne provided a more apt metaphor, and I don’t think I’m distorting the science much to say explosive volcanoes pop like this favorite sparkling adult beverage.</p> <p><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/meetings/2010/12/23/volcanic-eruptions-like-popping-the-cork-on-a-magnum-of-champagne/" class="more">Read More <span class="more-arrow">>></span></a></p> <br class="clearfloat"/> </div> <div class="post entry" id="post-6699"> <p class="date"> 16 December 2010 </p> <h3 class="posttitle"><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/meetings/2010/12/16/careful-sudden-increase-in-stress-could-cause-major-eruptions/" rel="bookmark" title="Permanent Link to Careful! Sudden increase in stress could cause major eruptions"> Careful! Sudden increase in stress could cause major eruptions </a></h3> <p>We’ve all had times when a sudden pile of stress makes us ready to explode at any minute. Volcanoes might react the same way–a new hypothesis presented in Wednesday morning’s poster session suggests that rapid changes in the amount of stress on the Earth’s crust might explain a cyclical pattern of volcanic activity over the last million years. These cycles could ultimately be triggered by periodic cycles of Earth’s climate.</p> <p><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/meetings/2010/12/16/careful-sudden-increase-in-stress-could-cause-major-eruptions/" class="more">Read More <span class="more-arrow">>></span></a></p> <br class="clearfloat"/> </div> <div class="post entry" id="post-6675"> <p class="date"> </p> <h3 class="posttitle"><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/meetings/2010/12/16/hot-lava-on-the-move-maybe-not/" rel="bookmark" title="Permanent Link to Hot lava on the move? Maybe not…"> Hot lava on the move? Maybe not… </a></h3> <p>Seismic waves emanating from a volcano may be an ominous sign that hot lava is on the move. But then again, maybe not.</p> <p>Signals resonating from a subterranean pipes system gushing with hot lava should be very different from the signals generated by crushing rock. And they are–but only if you are recording the event close enough to the source. From far away, the signals appear very similar, and one can be easily confused for the other.</p> <p><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/meetings/2010/12/16/hot-lava-on-the-move-maybe-not/" class="more">Read More <span class="more-arrow">>></span></a></p> <br class="clearfloat"/> </div> <div class="post entry" id="post-6653"> <p class="date"> 15 December 2010 </p> <h3 class="posttitle"><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/meetings/2010/12/15/lightning-could-help-warn-aircraft-of-volcanic-eruptions/" rel="bookmark" title="Permanent Link to Lightning could help warn aircraft of volcanic eruptions"> Lightning could help warn aircraft of volcanic eruptions </a></h3> <p>Some volcanic eruptions emit lightning–volcanic plumes are a lot like dirty thunderclouds. Scientists wonder: Could this lightning be used to help warn airplane pilots of volcanic eruptions so they can avoid ash?</p> <p><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/meetings/2010/12/15/lightning-could-help-warn-aircraft-of-volcanic-eruptions/" class="more">Read More <span class="more-arrow">>></span></a></p> <br class="clearfloat"/> </div> <div class="post entry" id="post-6598"> <p class="date"> 14 December 2010 </p> <h3 class="posttitle"><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/meetings/2010/12/14/ice-volcano-huh/" rel="bookmark" title="Permanent Link to Ice Volcano? Huh?"> Ice Volcano? Huh? </a></h3> <p>I always thought volcanoes belched flaming, crackling chunks of rock, oozed hot goopy magma, and buried everything on their slopes. So when I noticed several presentations on AGU’s schedule about “ice volcanoes,”–like P22A: Titan: The methane cycle and potential for watery warm spots 1 I was intrigued.</p> <p><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/meetings/2010/12/14/ice-volcano-huh/" class="more">Read More <span class="more-arrow">>></span></a></p> <br class="clearfloat"/> </div> <div class="post entry" id="post-6280"> <p class="date"> 14 November 2010 </p> <h3 class="posttitle"><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/martianchronicles/2010/11/14/book-review-the-road/" rel="bookmark" title="Permanent Link to Book Review: The Road"> Book Review: The Road </a></h3> <p>I’ve been on a bit of a post-apocalyptic kick this year. It all started when I got Fallout 3 last Christmas, and once I finished that game I moved on to reading some of the classics of the genre like On the Beach and I am Legend and The Stand. There’s something oddly fascinating about seeing characters face the end of the world, and to me it’s even more interesting …</p> <p><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/martianchronicles/2010/11/14/book-review-the-road/" class="more">Read More <span class="more-arrow">>></span></a></p> <br class="clearfloat"/> </div> <div class="post entry" id="post-6176"> <p class="date"> 5 November 2010 </p> <h3 class="posttitle"><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/landslideblog/2010/11/05/hurricane-tomas-mount-merapi-and-landslides-in-costa-rica/" rel="bookmark" title="Permanent Link to Hurricane Tomas, Mount Merapi and landslides in Costa Rica"> Hurricane Tomas, Mount Merapi and landslides in Costa Rica </a></h3> <p>With three substantial natural hazard events occurring simultaneously, I thought I would post a round-up of those rapidly-evolving events: 1. Hurricane Tomas As feared, Hurricane Tomas is now bringing heavy rainfall to Haiti. The path of the storm has been somewhat erratic, as the Tropical Storm Risk track map shows. However, the storm is now tracking in a generally north-northwesterly direction, and is likely to pass just to the west of …</p> <p><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/landslideblog/2010/11/05/hurricane-tomas-mount-merapi-and-landslides-in-costa-rica/" class="more">Read More <span class="more-arrow">>></span></a></p> <br class="clearfloat"/> </div> <div class="navigation"> <div class="alignleft"></div> <div class="alignright"></div> </div> </div> </div> </div> <div id="sidebar"> <div class="social"> <span class="connect-name">Connect with AGU:</span> <span class="icons"> <a href="https://web.archive.org/web/20120225162311/http://www.youtube.com/user/AGUvideos" target="_blank"><img src="https://web.archive.org/web/20120225162311im_/http://blogs.agu.org/wp-content/themes/agu-buddypress/images/social-rev/youtube.png" width="25" height="25" alt="YouTube"/></a> <a href="https://web.archive.org/web/20120225162311/http://www.facebook.com/AmericanGeophysicalUnion?ref=ts" target="_blank"><img src="https://web.archive.org/web/20120225162311im_/http://blogs.agu.org/wp-content/themes/agu-buddypress/images/social-rev/facebook.png" width="25" height="25" alt="Facebook"/></a> <a href="https://web.archive.org/web/20120225162311/http://twitter.com/theAGU" target="_blank"><img src="https://web.archive.org/web/20120225162311im_/http://blogs.agu.org/wp-content/themes/agu-buddypress/images/social-rev/twitter.png" width="25" height="25" alt="Twitter"/></a> <a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/feed" target="_blank"><img src="https://web.archive.org/web/20120225162311im_/http://blogs.agu.org/wp-content/themes/agu-buddypress/images/social-rev/rssfeed.png" width="25" height="25" alt="RSS Feed"/></a> </span> <br class="clearfloat"/> </div>   <div id="text-2" class="widget widget_text"><h3 class="widgettitle">Welcome!</h3> <div class="textwidget">This is a community of Earth and space science blogs, hosted by the American Geophysical Union.</div> </div> <div id="recent-posts-3" class="widget widget_recent_entries"> <h3 class="widgettitle">Latest Posts</h3> <ul> <li><a href="https://web.archive.org/web/20120225162311/http://blogs.agu.org/wildwildscience/2012/02/25/look-west-at-sunset-this-weekend-venus-the-moon-and-jupiter-are-putting-on-a-show/" title="Look West at Sunset This Weekend. 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