Inferred gas hydrate on the Barents Sea shelf - a model for its formation and a volume estimate

被引：34

作者：

Laberg, JS ^{[1
]}

Andreassen, K

Knutsen, SM

机构：

[1] Univ Tromso, Dept Geol, N-9037 Tromso, Norway

[2] Norsk Hydro AS, N-9401 Harstad, Norway

来源：

GEO-MARINE LETTERS | 1998年 / 18卷 / 01期

关键词：

D O I：

10.1007/s003670050048

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

On the southwestern Barents Sea shelf, sediments containing gas hydrates that overlie free gas have been inferred from multichannel seismic data. The volume of suspected gas hydrate is tentatively estimated to about 1.9 x 10(8) m(3). The gas hydrate zone probably formed from thermogenic gas leaking from a deeper source. The hydrate zone map have thickened during the Neogene by including gas originally trapped as free gas below the hydrate following a significant downward migration of the isotherms caused by erosion and/or subsidence. Within the present oceanographic conditions, gas hydrate is suspected to be stable or slowly decomposing.

引用

页码：26 / 33

页数：8

共 40 条

[1] Amplitude versus offset modeling of the bottom simulating reflection associated with submarine gas hydrates [J].