Permafrost Degradation in the Western Sector of Russian Arctic under Climate Change

Vasiliev, A.; Drozdov, D.; Gravis, A.; Malkova, G.; Oblogov, G.; Ponomareva, O.; Streletskaya, I.

Авторы: Vasiliev A., Drozdov D., Gravis A., Malkova G., Oblogov G., Ponomareva O., Streletskaya I.
Сборник: International Conference “Solving the puzzles from Cryosphere” : Program, Abstracts : Pushchino, Russia, April 15–18, 2019
Тезисы
Год издания: 2019
Место издания: Москва
Первая страница: 39
Последняя страница: 40
Аннотация: According to the results of permafrost monitoring in the western sector of Russian Arctic obtained in 1975-2017 by the Tyumen Scientific Center of SB RAS, dramatic changes in permafrost conditions of this region have occurred. Based on observations within the bioclimatic zones of typical tundra, southern tundra, forest tundra, and northern taiga, we detect a new natural phenomenon: widespread degradation of permafrost with formation of the lowered permafrost table at depths from 3 to 10 m and occurrence of thin frozen layers, which may remain frozen for one or several summers. This new phenomenon still needs to be studied because we do not have sufficient information on its geographic boundaries and processes of its formation and evolution. However, we may conclude that the continental permafrost in the study area is not stable anymore as a result of changing thermal conditions and properties of degrading permafrost, including decrease in bearing capacity of frozen soils, migration of boundaries of bioclimatic zones, and changes in conditions of traditional land use.
Добавил в систему: Стрелецкая Ирина Дмитриевна

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