Negligible atmospheric release of methane from decomposing hydrates in mid-latitude oceans
Negligible atmospheric release of methane from decomposing hydrates in mid-latitude oceans
复制标题
中纬度海洋中水合物分解产生的甲烷向大气中释放的量可以忽略不计
DOI:
10.1038/s41561-022-01044-8
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发表时间:
2022
影响因子:
18.3
通讯作者:
Kessler, John D.
中科院分区:
文献类型:
--
作者:
Joung, DongJoo;Ruppel, Carolyn;Southon, John;Weber, Thomas S.;Kessler, John D.
Naturally occurring gas hydrates may contribute to a positive feedback for global warming because they sequester large amounts of the potent greenhouse gas methane in ice-like deposits that could be destabilized by increasing ocean/atmospheric temperatures. Most hydrates occur within marine sediments; gas liberated during the decomposition of seafloor hydrates or originating with other methane pools can feed methane emissions at cold seeps. Regardless of the origin of seep methane, all previous measurements of methane emitted from seeps have shown it to have a unique fossil radiocarbon signature, contrasting with other sources of marine methane. Here we present the concentration and natural radiocarbon content of methane dissolved in the water column from the seafloor to the sea surface at seep fields along the US Atlantic and Pacific margins. For shallower water columns, where the seafloor is not within the hydrate stability zone, we do document seep CH4in some surface-water samples. However, measurements in deeper water columns along the US Atlantic margin reveal no evidence of seep CH4reaching surface waters when the water-column depth is greater than 430 ± 90 m. Gas hydrates exist only at water depths greater than ~550 m in this region, suggesting that the source of methane escaping to the atmosphere is not from hydrate decomposition.
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影响因子:
6.7
作者:
S. Merle;R. Embley;H. Johnson;T. Lau;B. Phrampus;N. Raineault;L. Gee
通讯作者:
L. Gee
DOI:
10.1016/j.dsr2.2017.10.016
发表时间:
2018
期刊:
Topical studies in oceanography
影响因子:
--
作者:
Seabrook, S.
通讯作者:
Seabrook, S.
影响因子:
3.7
作者:
M. Leonte;B. Wang;S. Socolofsky;S. Mau;J. Breier;J. Kessler
通讯作者:
M. Leonte;B. Wang;S. Socolofsky;S. Mau;J. Breier;J. Kessler
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
M. Torres;R. Embley;S. Merle;A. Tréhu;R. W. Collier;E. Suess;K. Heeschen
通讯作者:
K. Heeschen
影响因子:
5.2
作者:
Binbin Wang;I. Jun;S. Socolofsky;S. DiMarco;J. Kessler
通讯作者:
J. Kessler