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Lava building up in volcano near Japan's southerly islands - fox news

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Lava building up in volcano near Japan's southerly islands - fox news A submerged volcano off the coast of Japan that erupted 7,300 years ago could be preparing to make a comeback.Scientists have discovered evidence of a giant dome of lava in the Kikai volcano's collapsed magma chamber.They believe it contains about 32 cubic km (7.68 cubic miles) of magma, and distortions on its surface suggest the dome is growing.Currently the dome is around  6.2 miles (10 kilometers) wide and 1,968 feet (600 meters) tall.Scientists say an eruption could take place without warning, and if it does, it could kill as many as 100 million people and trigger a 'volcanic winter'.The study, conducted by researchers with the Kobe Ocean-Bottom Exploration Center (KOBEC) at Kobe University, confirmed that the giant lava dome was created after a caldera-forming supereruption 7,300 years ago.That eruption is thought to have wiped out the prehistoric Jomon civilisation in southern Japan.If the new lava dome erupts, it could eject huge amounts of debris into the atmosphere, potentially blocking out the sun for some areas to trigger a 'volcanic winter'.It could also cause tsunami that would hit southern Japan and the coasts of Taiwan and China, before striking the coasts of North and South America.The paper says such supereruptions are 'rare but extremely hazardous events, and also have severe global impacts such as 'volcanic winter'.'Many of these super-volcanoes repeat super-eruptions in their multi-million year histories', the report said, adding that the scientists hope t Source: http://www.dailymail.co.uk/sciencetech/article-5384899/Lava-building-volcano-near-Japans-southerly-islands.html?ITO=1490&ns_mchannel=rss&ns_campaign=1490
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