Abstract

The results of detailed geological and geomorphological studies in the waters of the Pechora Sea using a complex of hydroacoustic methods in the 52 cruise of the R/V “Academic Nikolaj Strakhov” revealed numerous gas funnels (pockmarks) at the bottom of the Yuzhno-Novozemelsky trench. These forms are widespread on most of the bottom of the Barents Sea, while on the Pechora shelf there is very little information about their distribution. Analysis of seismoacoustic sections at the sites of development of gas funnels showed the presence of vertical chimneys in unconsolidated sediments of the Yuzhno-Novozemelsky trench, through which gas rises to the bottom surface and its release into the water column with the formation of negative landforms, which is accompanied by churning bottom sediments.

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