article_snippet.sent: But there is another form of the deadly gas, dubbed abiotic methane, that is created by chemical reactions in the crust beneath the seafloor.
article_snippet.sent: Now scientists have found vast deep water gas hydrates in the Arctic that are reservoirs for abiotic methane – a gas which is 20 times more effective in trapping heat than carbon dioxide.
article_snippet.sent: The Center for Arctic Gas Hydrate, Climate and Environment (Cage) estimates that up to 15,000 gigatonnes of carbon may be stored in the form of hydrates in the ocean floor.
article_snippet.sent: Scientists have found vast deep water gas hydrates in the Arctic that are reservoirs for abiotic methane – a gas which is 20 times more effective in trapping heat than carbon dioxide. 
article_snippet.sent: In other known settings the abiotic methane escapes into the ocean, where it potentially influences ocean chemistry,' says Johnson. '
article_snippet.sent: But other types of methane in the Arctic are causing a concern for scientists.
article_snippet.sent: Bünz tweeted: 'If even a small fraction of Arctic sea floor carbon is released to the atmosphere, we're f'd' The scientist, based at the Geological Survey of Denmark and Greenland, tweeted the provocative statement after a Swedish study found methane leaking beneath the Arctic.
article_snippet.sent: Some of this methane – which is over 20 times more potent than CO2 at trapping heat - is now making it to the ocean's surface.
article_snippet.sent: Samples of the gas hydrates will provide more knowledge on abiotic methane.
highlights_snippet.sent: Vast water hydrates in the Arctic are reservoirs for abiotic methane .
  
highlights_snippet.sent: But elsewhere scientists have found methane leaking beneath the Arctic the Arctic .