DOI: 10.1002/2014GL060483
论文题名: Ocean oxygen depletion due to decomposition of submarine methane hydrate
作者: Yamamoto A. ; Yamanaka Y. ; Oka A. ; Abe-Ouchi A.
刊名: Geophysical Research Letters
ISSN: 0094-9966
EISSN: 1944-9697
出版年: 2014
卷: 41, 期: 14 起始页码: 5075
结束页码: 5083
语种: 英语
英文关键词: clathrate
; climate change
; ocean oxygen depletion
; tipping points
Scopus关键词: Carbon dioxide
; Climate change
; Global warming
; Hydration
; Marine biology
; Methane
; Oceanography
; Oxygen
; Submarines
; Biogeochemical cycle
; clathrate
; Hydrate decomposition
; Marine organisms
; Oxygen depletion
; Oxygen solubility
; Potential impacts
; Tipping point
; Gas hydrates
; biogeochemical cycle
; carbon dioxide
; concentration (composition)
; hydration
; methane
; oxidation
; oxygen
; seawater
; timescale
; underwater environment
英文摘要: Global warming could decompose submarine methane hydrate and cause methane release into the ocean. The released methane causes oxygen depletion via oxidation; however, its global impact is yet to be quantitatively investigated. We have projected the potential impact of oxygen depletion due to methane hydrate decomposition via numerical modeling. We find that the global methane hydrate inventory decreases by approximately 70% (35%) under four times (twice) the atmospheric CO2 concentration and is accompanied by significant global oxygen depletion on a timescale of thousands of years. In particular, we demonstrate the great expansion of suboxic and hypoxic regions, having adverse impact on marine organisms and ocean biogeochemical cycles. This is because hydrate decomposition primarily occurs in the Pacific Ocean, where present-day seawater has low oxygen concentration. Besides the decrease in oxygen solubility and reduced ventilation associated with global warming, the process described in this study is also important in oxygen depletion. © 2014. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84904525195&doi=10.1002%2f2014GL060483&partnerID=40&md5=79e8e85fd0009b13de2cee9ad8fa28a3
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7230
Appears in Collections: 气候减缓与适应
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作者单位: Atmospheric and Ocean Research Institute, University of Tokyo, Kashiwa, Japan
Recommended Citation:
Yamamoto A.,Yamanaka Y.,Oka A.,et al. Ocean oxygen depletion due to decomposition of submarine methane hydrate[J]. Geophysical Research Letters,2014-01-01,41(14).