Gas hydrates that outcrop on the sea floor: stability models

被引：0

作者：

A. V. Egorov

K. Crane

P. R. Vogt

A. N. Rozhkov

P. P. Shirshov

机构：

[1] Institute of Oceanology of Russian Academy of Science,

[2] 36,undefined

[3] Nachimovskiy prospect,undefined

[4] Moscow,undefined

[5] Russia 117 218,undefined

[6] Hunter College,undefined

[7] CUNY,undefined

[8] New York,undefined

[9] and Lamont-Doherty Earth Observatory,undefined

[10] Palisades,undefined

[11] New York,undefined

[12] USA,undefined

[13] Marine Geoscience Division,undefined

[14] Naval Research Laboratory,undefined

[15] Washington,undefined

[16] DC,undefined

[17] USA,undefined

[18] Institute for Problems in Mechanics of Russian Academy of Science,undefined

[19] Moscow,undefined

[20] Russia,undefined

来源：

Geo-Marine Letters | 1999年 / 19卷

关键词：

Methane; Migration; Hydrate; Heat Flow; Point Source;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The detection of sea-floor gas hydrates (GHs) proves that they can coexist in contact with seawater. We calculate that sea-floor hydrates undergo rapid dissolution, yet they are maintained by the constant high rate of upward migration of gas-saturated waters. If upward migration originates from a point source, then the thickness of sea-floor hydrates varies with distance from the center of the upwelling (depending on heat flow). However, near-surface fracturing may control the actual points of exit onto the sea floor above. If gas migration rates decrease from the center of the mud volcano to its periphery, a concentric pattern in distribution of temperature, methane concentration, and GH contents can be described.

引用

页码：68 / 75

页数：7

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