Permafrost and Gas Hydrates on the East Siberian Arctic Shelf

被引：2
|
作者：
Bogoyavlensky, V., I [1 ]
Kishankov, A., V [1 ]
Kazanin, A. G. [2 ]
机构：
[1] Russian Acad Sci, Oil & Gas Res Inst, Moscow 119333, Russia
[2] Marine Arctic Geol Expedit MAGE, Murmansk 183038, Russia
来源：
DOKLADY EARTH SCIENCES | 2022年 / 507卷 / 01期
关键词：
Earth degassing; East Siberian Arctic Shelf; subsea frozen ground; gas hydrates; CDP seismic survey; refracted waves; LAPTEV SEA; PART;
D O I：
10.1134/S1028334X22600578
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
In the north of the shallow East Siberian Arctic Shelf (the Laptev and East Siberian seas), based on CDP (common depth point) seismic data for 71 lines with total length of 15 630 km, velocities of refracted waves propagation in the upper part of the section were studied. Fundamentally new information was obtained on the state of the shelf permafrost and significant decrease of the zone of possible occurrence of frozen ground and methane hydrates was substantiated. Based on the comprehensive analysis of areas of subsea frozen ground degradation in the Laptev, East Siberian, Chukchi and Beaufort seas, the low probability of a significant contribution of methane, released due to gas hydrates dissociation, to global climate change was substantiated.
引用
收藏
页码：946 / 951
页数：6
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