Permafrost Conditions in Kashin Island (Pechora Delta), from Seismic Profiling Data

摘要

The shallow-water part of the Korovinskaya Bay and the coast and beach areas of Kashin Island in the Pechora Delta have been explored by seismic profiling using the acquisition techniques and instruments designed at the Earth Cryosphere Institute SB RAS. The measured depths to the permafrost table are 4-6 m in the beach, increase slowly to 10 m in shallow water, and deepen abruptly to an unresolved depth at 180 m offshore, as a result of rapid coastal thermal erosion and aeolian processes. Permafrost occurs all over the island but the permafrost table is as deep as 2 to 5.5 m in kettles.