Permafrost Erosion in Yamal (Proyavlenie Erozii v Mnogoletnemerzlykh Porodakh na Yanale)

• Main Author: Shamanova,I. I.
• Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
• Format: Text
• Language: English
• Published: 1972
• Subjects: Soil Mechanics; Snow; Ice and Permafrost; (*PERMAFROST; EROSION); SOILS; HYDROLOGY; CLIMATE; HEAT TRANSFER; SEDIMENTATION; THERMAL PROPERTIES; DRAINAGE; TERRAIN; ICE; THICKNESS; USSR; SOIL EROSION; FREEZING; TRANSLATIONS; Ice; permafrost; Thermokarst
• Online Access: http://www.dtic.mil/docs/citations/AD0753034; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0753034

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) Draft trans. of Akademiya Nauk SSSR. Izvestiya. Seriya Geograficheskaya, n2 p92-98 Mar/Apr 71.