气候变化领域集成服务门户(CCPortal): Temporal constraints on hydrate-controlled methane seepage off Svalbard

CCPortal

DOI	10.1126/science.1246298
	Temporal constraints on hydrate-controlled methane seepage off Svalbard
	Berndt C.; Feseker T.; Treude T.; Krastel S.; Liebetrau V.; Niemann H.; Bertics V.J.; Dumke I.; Dünnbier K.; Ferré B.; Graves C.; Gross F.; Hissmann K.; Hühnerbach V.; Krause S.; Lieser K.; Schauer J.; Steinle L.
发表日期	2014
ISSN	0036-8075
起始页码	284
结束页码	287
卷号	343 期号:6168
英文摘要	Methane hydrate is an icelike substance that is stable at high pressure and low temperature in continental margin sediments. Since the discovery of a large number of gas flares at the landward termination of the gas hydrate stability zone off Svalbard, there has been concern that warming bottom waters have started to dissociate large amounts of gas hydrate and that the resulting methane release may possibly accelerate global warming. Here, we corroborate that hydrates play a role in the observed seepage of gas, but we present evidence that seepage off Svalbard has been ongoing for at least 3000 years and that seasonal fluctuations of 1° to 2°C in the bottom-water temperature cause periodic gas hydrate formation and dissociation, which focus seepage at the observed sites.
英文关键词	methane; methane hydrate; unclassified drug; continental margin; gas hydrate; global warming; high pressure; low temperature; methane; sediment chemistry; seepage; air pollution; article; dissociation; gas flaring; gas seepage; greenhouse effect; mathematical model; molecular stability; priority journal; seasonal variation; sediment; Svalbard and Jan Mayen; temperature dependence; thermostability; water temperature; Arctic; Svalbard; Svalbard and Jan Mayen
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/243031
作者单位	GEOMAR Helmholtz Centre for Ocean Research Kiel, 24148 Kiel, Germany; MARUM Center for Marine Environmental Sciences, Faculty of Geosciences, University of Bremen, 28359 Bremen, Germany; Department of Environmental Sciences, University of Basel, 4056 Basel, Switzerland; CAGE (Centre for Arctic Gas Hydrate, Environment, and Climate), Department of Geology, University of Tromsø, 9037 Tromsø, Norway; National Oceanography Centre, Southampton SO14 3ZH, United Kingdom; Institute of Geosciences, University of Kiel, 24118 Kiel, Germany; Institut für Angewandte Geowissenschaften, Technische Universität Berlin, 10587 Berlin, Germany
推荐引用方式 GB/T 7714	Berndt C.,Feseker T.,Treude T.,et al. Temporal constraints on hydrate-controlled methane seepage off Svalbard[J],2014,343(6168).
APA	Berndt C..,Feseker T..,Treude T..,Krastel S..,Liebetrau V..,...&Steinle L..(2014).Temporal constraints on hydrate-controlled methane seepage off Svalbard.Science,343(6168).
MLA	Berndt C.,et al."Temporal constraints on hydrate-controlled methane seepage off Svalbard".Science 343.6168(2014).