DOI: 10.1002/grl.50985
论文题名: The response of methane hydrate beneath the seabed offshore Svalbard to ocean warming during the next three centuries
作者: Marín-Moreno H. ; Minshull T.A. ; Westbrook G.K. ; Sinha B. ; Sarkar S.
刊名: Geophysical Research Letters
ISSN: 0094-8477
EISSN: 1944-8208
出版年: 2013
卷: 40, 期: 19 起始页码: 5159
结束页码: 5163
语种: 英语
英文关键词: Arctic
; gas-hydrates dissociation
; methane release
; modeling
; ocean warming
; Svalbard
Scopus关键词: Abrupt climate change
; Arctic
; Arctic tundra
; Continental margin
; Methane hydrates
; Methane release
; Ocean warming
; Svalbard
; Dissociation
; Dynamic response
; Greenhouse gases
; Hydration
; Methane
; Models
; Oceanography
; Gas hydrates
; climate change
; climate modeling
; concentration (composition)
; melting
; methane
; seafloor
; sediment chemistry
; tundra
; water depth
; Arctic
; Arctic Ocean
; Svalbard
; Svalbard and Jan Mayen
英文摘要: Methane is a potent greenhouse gas and large-scale rapid release of methane from hydrate may have contributed to past abrupt climate change inferred from the geological record. The discovery in 2008 of over 250 plumes of methane gas escaping from the seabed of the West Svalbard continental margin at ∼400 m water depth (mwd) suggests that hydrate is dissociating in the present-day Arctic. Here we model the dynamic response of hydrate-bearing sediments over a period of 2300 years and investigate ocean warming as a possible cause for present-day and likely future dissociation of hydrate, within 350-800 mwd, west of Svalbard. Future temperatures are given by two climate models, HadGEM2 and CCSM4, and scenarios, Representative Concentration Pathways (RCPs) 8.5 and 2.6. Our results suggest that over the next three centuries 5.3-29 Gg yr-1 of methane may be released to the Arctic Ocean on the West Svalbard margin. Key Points Hydrate melting area offshore Svalbard extends to ∼550 m water depth by 2300 CE Average methane release offshore Svalbard reaches 5.3-29 Gg/yr by 2300 CE Arctic future methane release from hydrate similar to that from Arctic tundra ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84884885533&doi=10.1002%2fgrl.50985&partnerID=40&md5=0ac991a5e4303fae1d50788cc7e33252
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5741
Appears in Collections: 气候减缓与适应
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作者单位: National Oceanography Centre, Southampton, University of Southampton, Waterfront Campus, European Way, Southampton, SO14 3ZH, United Kingdom
Recommended Citation:
Marín-Moreno H.,Minshull T.A.,Westbrook G.K.,et al. The response of methane hydrate beneath the seabed offshore Svalbard to ocean warming during the next three centuries[J]. Geophysical Research Letters,2013-01-01,40(19).