Escape of methane gas from the seabed along the West Spitsbergen continental margin

被引：246

作者：

Westbrook, Graham K. ^{[1
]}

Thatcher, Kate E. ^{[1
]}

Rohling, Eelco J. ^{[5
]}

Piotrowski, Alexander M. ^{[8
]}

Paelike, Heiko ^{[5
]}

Osborne, Anne H. ^{[7
]}

Nisbet, Euan G. ^{[6
]}

Minshull, Tim A. ^{[5
]}

Lanoiselle, Mathias ^{[6
]}

James, Rachael H. ^{[5
]}

Huehnerbach, Veit ^{[5
]}

Green, Darryl ^{[5
]}

Fisher, Rebecca E. ^{[6
]}

Crocker, Anya J. ^{[5
]}

Chabert, Anne ^{[5
]}

Bolton, Clara ^{[5
]}

Beszczynska-Moeller, Agnieszka ^{[4
]}

Berndt, Christian ^{[3
,5
]}

Aquilina, Alfred ^{[2
]}

机构：

[1] Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham B15 2TT, W Midlands, England

[2] Univ Bristol, Organ Geochem Unit, Bristol Biogeochem Res Ctr, Sch Chem, Bristol BS8 1TS, Avon, England

[3] Univ Kiel, Leibniz Inst Marine Sci, IFM GEOMAR, D-24148 Kiel, Germany

[4] Alfred Wegener Inst Polar & Marine Res, D-27515 Bremerhaven, Germany

[5] Univ Southampton, Natl Oceanog Ctr Southampton, Southampton SO14 3ZH, Hants, England

[6] Royal Holloway Univ London, Dept Earth Sci, Egham TW20 0EX, Surrey, England

[7] Univ Bristol, Bristol Isotope Grp, Dept Earth Sci, Bristol BS8 1RJ, Avon, England

[8] Univ Cambridge, Godwin Lab Palaeoclimate Res, Dept Earth Sci, Cambridge CB4 2TY, England

来源：

GEOPHYSICAL RESEARCH LETTERS | 2009年 / 36卷

基金：

英国自然环境研究理事会;

关键词：

NW SVALBARD; HYDRATE; DISSOCIATION; RETHINKING; MAXIMUM; WATER; CYCLE; AREA;

D O I：

10.1029/2009GL039191

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

More than 250 plumes of gas bubbles have been discovered emanating from the seabed of the West Spitsbergen continental margin, in a depth range of 150-400 m, at and above the present upper limit of the gas hydrate stability zone (GHSZ). Some of the plumes extend upward to within 50 m of the sea surface. The gas is predominantly methane. Warming of the northward-flowing West Spitsbergen current by 1 degrees C over the last thirty years is likely to have increased the release of methane from the seabed by reducing the extent of the GHSZ, causing the liberation of methane from decomposing hydrate. If this process becomes widespread along Arctic continental margins, tens of Teragrams of methane per year could be released into the ocean. Citation: Westbrook, G. K., et al. (2009), Escape of methane gas from the seabed along the West Spitsbergen continental margin, Geophys. Res. Lett., 36, L15608, doi: 10.1029/2009GL039191.

引用

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