Permafrost Erosion in Yamal (Proyavlenie Erozii v Mnogoletnemerzlykh Porodakh na Yanale),
Abstract
The region under study is a distinctly terraced, gently rolling aggradation plain with erosion-thermokarst runoff belts and numerous thermokarst lakes. The climate in the region is severe; the average many years' air temperature is -9.5C. The thickness of the frozen layers in a large part of the territory exceeds 300 to 400 m; their most typical temperature at the base of the layer of annual heat exchanges is -6 to -7C. The thickness of the seasonally thawing soil layer under the influence of a grouping of natural factors (composition of sediments depth of mossy-lichen layer and peaty horizon, position of sector in relief, etc.) will fluctuate from 0.25 to 0.3 m (in the peat bogs) to 1.3 m (in the watershed sectors with mottled microrelief). (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1972
- Accession Number
- AD0753034
Entities
People
- I. I. Shamanova
Organizations
- Cold Regions Research and Engineering Laboratory