Abstract

The spatial distribution of subsurface seismoacoustic anomalies of the “bright spot” type in the Pechora Sea, which are indicators of free gas accumulation, is analyzed. The anomalies are associated with deep-water faults that cut the Paleozoic and, in some cases, Mesozoic sedimentary complexes, through which gas-saturated fluids migrate up to the Quaternary sediments, where the studied phenomenon is observed. Gas bursts into the water column have dangerous consequences for man-made activities in the shelf are. Gas-saturated areas in the sediments are identified in space discretely, both horizontally and vertically. Providing safe human activity on the Arctic shelves requires detailed study of the manifestations of degassing.

中文翻译：

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伯朝拉海沉积剖面上部脱气特征及其与构造关系

摘要

分析了作为游离气聚集指标的伯朝拉海“亮点”型地下地震声异常的空间分布。这些异常与切割古生代和在某些情况下切割中生代沉积复合体的深水断层有关，气体饱和流体通过这些断层向上迁移到第四纪沉积物，在那里观察到所研究的现象。气体冲入水柱对架子上的人为活动有危险的后果。沉积物中的气体饱和区域在空间中以水平和垂直方式离散识别。在北极大陆架上提供安全的人类活动需要对脱气的表现进行详细研究。