Permafrost dynamics in the north-east of European Russia at the end of the 20th century
Authors: Oberman, N. G.; Mazhitova, G. G.
Source: Norwegian Journal of Geography, Volume 55, Number 4, 1 November 2001 , pp. 241-244(4)
Abstract:In the major physiographic divisions of the north-east of European Russia, temperatures in the cryolithozone and the active/seasonally frozen layer were monitored during the period 1970 to 1995. Active layer depths increased on average by 11% to 15%, whereas the depths of the seasonally frozen layer decreased by 19% to 40%. The largest positive temperature increments, up to 1.2°C, were characteristic for the piedmont and basement plains. Lacustrine-alluvial lowlands demonstrated oppositely directed temperature trends depending on a landform. Numerous sites with ongoing permafrost formation demonstrated negative temperature increments varying from 0.1°C to 2.0°C.
Document Type: Research Article
Publication date: November 1, 2001