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Politics : Formerly About Advanced Micro Devices

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To: RMF who wrote (935588)	5/18/2016 1:47:30 PM
From: bentway	Read Replies (1) of 1575628

Another big fear is that these things: en.wikipedia.org Methane clathrate, which are like solid methane chunks and are all over the bottom of our cold oceans, will re-gassify and leak into the atmosphere as the oceans warm. --- Methane clathrates and climate change[ edit] Main article: Clathrate gun hypothesis Methane is a powerful greenhouse gas. Despite its short atmospheric half life of 12 years, methane has a global warming potential of 86 over 20 years and 34 over 100 years (IPCC, 2013). The sudden release of large amounts of natural gas from methane clathrate deposits has been hypothesized as a cause of past and possibly future climate changes. Events possibly linked in this way are the Permian-Triassic extinction event and the Paleocene-Eocene Thermal Maximum. Climate scientists like James E. Hansen predict that methane clathrates in the permafrost regions will be released because of global warming, unleashing powerful feedback forces which may cause runaway climate change that cannot be halted. Research carried out in 2008 in the Siberian Arctic found millions of tonnes of methane being released[36][37][38][39][40] with concentrations in some regions reaching up to 100 times above normal.[41] In their Correspondence in the September 2013 Nature Geoscience journal, Vonk and Gustafsson cautioned that the most probable mechanism to strengthen global warming is large-scale thawing of Arctic permafrost which will release methane clathrate into the atmosphere.[42] While performing research in July in plumes in the East Siberian Arctic Ocean, Gustafsson and Vonk were surprised by the high concentration of methane.[43] In 2014 based on their research on the northern United States Atlantic marine continental margins from Cape Hatteras to Georges Bank, a group of scientists from the US Geological Survey, the Department of Geosciences, Mississippi State University, Department of Geological Sciences, Brown University and Earth Resources Technology, claimed there was widespread leakage of methane.[44] [45]

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