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Strong anthropogenic impact on the coasts dynamics is observed in Western Yamal, in the area of the landfall of the underwater transition of the Bovanenkovo-Ukhta gas pipeline. Its most hazardous types are removal of sediments from beach and coastal barrier, dredging at the Yarayakha River's mouth and interception of sediments' drift with the help of a cofferdam. This leads to coasts erosion in some areas and to sediments accumulation in others