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Pleistocene slope instability of gas hydrate-laden sediment on the Beaufort Sea margin

Marine Geotechnology

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,
DOI: 10.1080/10641199109379886

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Abstract

In oceanic areas underlain by sediment with gas hydrate, reduction of sea level initiates disassociation along the base of the gas hydrate, which, in turn, causes the release of large volumes of gas into the sediment and creates excess pore-fluid pressures and reduced slope stability. Fluid diffusion properties dominate the disassociation process in fine-grained marine sediment. Slope failure appears likely for this sediment type on moderate slopes unless pressures can be adequately vented away from the gas hydrate base. Pleistocene eustatic-sea level regressions, likely triggered seafloor landslides on the continental slope of the Beaufort Sea and other margins where gas hydrate is present in seafloor sediment. -from Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Pleistocene slope instability of gas hydrate-laden sediment on the Beaufort Sea margin
Series title:
Marine Geotechnology
DOI:
10.1080/10641199109379886
Volume
10
Issue:
1-2
Year Published:
1991
Language:
English
Publisher:
Taylor and Francis
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
125
Last page:
141
Number of Pages:
17