Академическое издательство «Гео»

Permafrost, active-layer thickness, monitoring, surface subsidence, thawing index



KRIOSFERA ZEMLI, 2007, Vol. XI, № 4, p. 20-30

Thaw depth dynamics and soil surface subsidence at a Circumpolar Active Layer Monitoring (CALM) site, the European North of Russia

G.G. Mazhitova, D.A. Kaverin

Institute of Biology, Komi Scientific Centre, Ural Branch of RAS, 167982, Syktyvkar, Kommunisticheskya str., 28, Russia, galina_m@komisc.ru

Results of eleven-years monitoring of the active layer and surface subsidence at the site located in the European North of Russia are discussed. The monitoring is conducted under the Circumpolar Active Layer Monitoring (CALM) project using a 100×100 m grid approach. During the last decade the depth of active layer has been increasing continuously and the annual increase has been correlated with the “thawing index” (at 0.05 significance level). The thickening of active layer was accompanied by soil surface subsidence generally proportional to the thawed permafrost layer thickness. Spatially differentiated subsidence during 8 years changed the site surface topography distinctly.

Permafrost, active-layer thickness, monitoring, surface subsidence, thawing index
главная

www.izdatgeo.ru