气候变化领域集成服务门户(CCPortal): Extensive methane venting to the atmosphere from sediments of the East Siberian Arctic Shelf

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DOI	10.1126/science.1182221
	Extensive methane venting to the atmosphere from sediments of the East Siberian Arctic Shelf
	Shakhova N.; Semiletov I.; Salyuk A.; Yusupov V.; Kosmach D.; Gustafsson Ö.
发表日期	2010
ISSN	0036-8075
起始页码	1246
结束页码	1250
卷号	327 期号:5970
英文摘要	Remobilization to the atmosphere of only a small fraction of the methane held in East Siberian Arctic Shelf (ESAS) sediments could trigger abrupt climate warming, yet it is believed that sub-sea permafrost acts as a lid to keep this shallow methane reservoir in place. Here, we show that more than 5000 at-sea observations of dissolved methane demonstrates that greater than 80% of ESAS bottom waters and greater than 50% of surface waters are supersaturated with methane regarding to the atmosphere. The current atmospheric venting flux, which is composed of a diffusive component and a gradual ebullition component, is on par with previous estimates of methane venting from the entire World Ocean. Leakage of methane through shallow ESAS waters needs to be considered in interactions between the biogeosphere and a warming Arctic climate.
英文关键词	methane; surface water; water; air-sea interaction; dissolved gas; marine sediment; methane; permafrost; supersaturation; venting; article; atmosphere; climate change; greenhouse effect; permafrost; priority journal; Russian Federation; sediment; Arctic Ocean; East Siberian Sea
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/245441
作者单位	International Arctic Research Centre, University of Alaska, Fairbanks, AK 99709, United States; Russian Academy of Sciences, Far Eastern Branch, Pacific Oceanological Institute, Vladivostok 690041, Russian Federation; Stockholm University, Bert Bolin Centre for Climate Research, Department of Applied Environmental Science, Stockholm S-10691, Sweden
推荐引用方式 GB/T 7714	Shakhova N.,Semiletov I.,Salyuk A.,et al. Extensive methane venting to the atmosphere from sediments of the East Siberian Arctic Shelf[J],2010,327(5970).
APA	Shakhova N.,Semiletov I.,Salyuk A.,Yusupov V.,Kosmach D.,&Gustafsson Ö..(2010).Extensive methane venting to the atmosphere from sediments of the East Siberian Arctic Shelf.Science,327(5970).
MLA	Shakhova N.,et al."Extensive methane venting to the atmosphere from sediments of the East Siberian Arctic Shelf".Science 327.5970(2010).