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Causes and Consequences of Rapid Thermokarst Development in Permafrost or Glacial Terrain

Dates

Year
2002

Citation

Harris, S. A., 2002, Causes and Consequences of Rapid Thermokarst Development in Permafrost or Glacial Terrain: Permafrost and Periglacial Processes, v. 13, no. 3, p. 237-242.

Summary

Comparison of the temperatures at 50 cm depth in Fox Lake, Yukon Territory, with those at 10 cm depth in the soil on an adjacent lithalsa indicates that water absorbs between five and seven times as much solar energy as the soil on an annual basis. This is partly due to the differences in thermal properties between ice, water, soil and rock, but is also due to the water being translucent, and absorbing solar energy through a much thicker layer. Movements of water also help in the process. In winter, the soil cools down to -16 degree C whereas the lake ice remains warmer than -3 degree C. This is the reason that a thaw pond, once formed, will go on enlarging in icy materials until it runs out of ground ice or intersects a drainage way. [...]

Contacts

Author :
Harris, S. A.

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  • LC MAP - Landscape Conservation Management and Analysis Portal
  • Northwest Boreal Landscape Conservation Cooperative

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Reference Item
NWBLCC20160627

Additional Information

Identifiers

Type Scheme Key
DOI http://sciencebase.gov/vocab/identifierScheme 10.1002/ppp.419
ISSN http://sciencebase.gov/vocab/identifierScheme 1045-6740, 1045-6740

Citation Extension

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