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Edition: U.S. Article Comments (1) Save Email Print Reprints Most Popular Most Shared Google shares slide amid Schmidt speculation 16 Apr 2010 Thai protesters boost security at Bangkok base | Video 2:42am EDT Goldman Sachs charged with fraud by SEC | Video 16 Apr 2010 Icelandic volcano eruption intensifies | Video 15 Apr 2010 UPDATE 2-Toyota to recall 870,000 Sienna 1998-2010 minivans 16 Apr 2010 Goldman Sachs charged with fraud by SEC | Video 16 Apr 2010 Regulators seize eight banks 16 Apr 2010 UPDATE 2-Toyota to recall 870,000 Sienna 1998-2010 minivans 16 Apr 2010 Factbox: How Goldman's ABACUS deal worked 16 Apr 2010 Broadway's Laura Bell Bundy does double take on CD 16 Apr 2010 Ice cap thaw may awaken Icelandic volcanoes Alister Doyle, Environment Correspondent OSLO Fri Apr 16, 2010 7:06pm EDT An aerial handout photo from the Icelandic Coast Guard shows melting ice caused by a volcanic eruption at Eyjafjalla Glacier in southern Iceland April 14, 2010. The volcanic eruption on Wednesday partially melted a glacier, setting off a major flood that threatened to damage roads and bridges and forcing hundreds to evacuate from a thinly populated area. Picture taken April 14, 2010. Credit: Reuters/Icelandic Coast Guard/Arni Saeberg/Handout OSLO (Reuters) - A thaw of Iceland's ice caps in coming decades caused by climate change may trigger more volcanic eruptions by removing a vast weight and freeing magma from deep below ground, scientists said on Friday. World | Green Business | COP15 | Natural Disasters They said there was no sign that the current eruption from below the Eyjafjallajokull glacier that has paralysed flights over northern Europe was linked to global warming. The glacier is too small and light to affect local geology. "Our work suggests that eventually there will be either somewhat larger eruptions or more frequent eruptions in Iceland in coming decades," said Freysteinn Sigmundsson, a vulcanologist at the University of Iceland. "Global warming melts ice and this can influence magmatic systems," he told Reuters. The end of the Ice Age 10,000 years ago coincided with a surge in volcanic activity in Iceland, apparently because huge ice caps thinned and the land rose. "We believe the reduction of ice has not been important in triggering this latest eruption," he said of Eyjafjallajokull. "The eruption is happening under a relatively small ice cap." Carolina Pagli, a geophysicist at the University of Leeds in England, said there were risks that climate change could also trigger volcanic eruptions or earthquakes in places such as Mount Erebus in Antarctica, the Aleutian islands of Alaska or Patagonia in South America. MAGMA "The effects would be biggest with ice-capped volcanoes," she said. "If you remove a load that is big enough you will also have an effect at depths on magma production." She and Sigmundsson wrote a 2008 paper in the scientific journal Geophysical Research Letters about possible links between global warming and Icelandic volcanoes. That report said that about 10 percent of Iceland's biggest ice cap, Vatnajokull, has melted since 1890 and the land nearby was rising about 25 millimetres (0.98 inch) a year, bringing shifts in geological stresses. They estimated that the thaw had led to the formation of 1.4 cubic km (0.3 cubic mile) of magma deep below ground over the past century. At high pressures such as under an ice cap, they reckon that rocks cannot expand to turn into liquid magma even if they are hot enough. "As the ice melts the rock can melt because the pressure decreases," she said. Sigmundsson said that monitoring of the Vatnajokull volcano since 2008 suggested that the 2008 estimate for magma generation was "probably a minimum estimate. It can be somewhat larger." He said that melting ice seemed the main way in which climate change, blamed mainly on use of fossil fuels, could have knock-on effects on geology. The U.N. climate panel says that global warming will cause more floods, droughts and rising seas. For Reuters latest environment blogs, click on: blogs.reuters.com/environment/ World Green Business COP15 Natural Disasters Comments See All Comments (1) | Post Comment Apr 17, 2010 2:37am EDT Mz Pagli needs to go back to school. Thinning of the ice from her imaginary “global” warming will never trigger a volcano. I can assure her that the pressure built up under the ground is more than sufficient to move any amount of ice and snow pack – just take a look at what happened when Mt St Helens blew its stack. 4TimesAYear Report As Abusive See All Comments (1) Add a Comment *We welcome comments that advance the story directly or with relevant tangential information. We try to block comments that use offensive language or appear to be spam and review comments frequently to ensure they meet our standards. If you see a comment that you believe is irrelevant or inappropriate, you can flag it to our editors by using the report abuse links. Views expressed in the comments do not represent those of Reuters. More from Reuters Goldman Sachs charged with fraud The SEC alleged that Goldman structured and marketed a debt product related to the performance of subprime mortgages, and which cost investors more than $1 billion. Full Article | Live Coverage The Verdict: The SEC comes out swinging against Goldman Read the SEC complaint detailing Goldman charges Felix Salmon: Goldman’s Abacus lies Read Goldman's Abacus pitch book Goldman Sachs Greeks pay for the crisis Hiked taxes, cut public salaries, frozen pensions. The Greeks have swallowed a lot of bitter pills as the country battles an epic debt crisis -- but their patience won't last forever. Full Article Timeline: Greece's debt crisis Greece Affluent and happy to spend They're worth billions of dollars and their wallets are open. So why are marketers ignoring African Americans? Full Article The age of frugality takes a holiday Lifestyle © Copyright 2010 Thomson Reuters Editorial Editions: Africa Arabic Argentina Brazil Canada China France Germany India Italy Japan Latin America Mexico Russia Spain United Kingdom United States Reuters Contact Us Advertise With Us Help Journalism Handbook Archive Site Index Video Index Analyst Research Mobile Newsletters RSS Podcasts Widgets Your View Labs Thomson Reuters Copyright Disclaimer Privacy Professional Products Professional Products Support Financial Products About Thomson Reuters Careers Online Products Acquisitions Monthly Buyouts Venture Capital Journal International Financing Review Project Finance International PEhub.com PE Week Thomson Reuters is the world's largest international multimedia news agency, providing investing news, world news, business news, technology news, headline news, small business news, news alerts, personal finance, stock market, and mutual funds information available on Reuters.com, video, mobile, and interactive television platforms. 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