68th Canadian Geotechnical Conference and 7th Canadian Permafrost Conference

MONITORING OF CRYOGENIC GEOSYSTEMS IN THE EUROPEAN NORTH, THEIR CURRENT CONDITION AND DYNAMICS

Session: Permafrost and Cold Regions Geotechnology / Pergélisol et géotechnologie des régions froides

Galina Malkova, Earth Cryosphere Institute SB RAS (Russia)
Marat Sadurtdinov, Earth Cryosphere Institute SB RAS (Russia)
Andrey Skvortsov, Earth Cryosphere Institute SB RAS (Russia)
Andrey Tsarev, Earth Cryosphere Institute SB RAS (Russia)

This paper provides results of monitoring of cryogenic (permafrost-affected) geosystems at the permafrost monitoring stations Bolvansky, Kashin, and Shapkina, in region of the European North of Russia. The interannual dynamics of permafrost temperatures, and of the seasonal thawing depth have been studied. The trends in increase of ground temperature (Tground) in various cryogenic geosystems lag behind trends in air temperature (Tair). The Tair trend for the 30-year period shows an increase of 0.07ºC/year, while for Tground it varies from 0.01 to 0.03ºC /year. In the last two years, the active layer thickness has reached its maximum value, and the closed taliks began to form at the hilltops underlain by ice-poor permafrost.