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Physical and ecological changes associated with warming permafrost and thermokarst in Interior Alaska

Dates

Year
2009

Citation

Osterkamp, T. E., Jorgenson, M. T., Schuur, E. A. G., Shur, Y. L., Kanevskiy, M. Z., Vogel, J. G., and Tumskoy, V. E., 2009, Physical and ecological changes associated with warming permafrost and thermokarst in Interior Alaska: Permafrost and Periglacial Processes, v. 20, no. 3, p. 235-256.

Summary

Observations and measurements were made of physical and ecological changes that have occurred since 1985 at a tundra site near Healy, Alaska. Air temperatures decreased (1985 through 1999) while permafrost warmed and thawed creating thermokarst terrain, probably as a result of increased snow depths. Permafrost, active layer and ground-ice conditions at the Healy site are the result of the interaction of climatic, ecologic and other factors. The slow accumulation of ground ice in an intermediate permafrost layer formed by upward freezing from the permafrost surface leads to long-term differential frost heave and microrelief. When ground ice in the permafrost melts, the ground surface settles differentially resulting in thermokarst terrain [...]

Contacts

Tags

Provenance

Data source
File Processing
File Process
Type
End Note
Reference Item
3397 record import test
Reference File
NWBLCC-20160406.xml

Additional Information

Identifiers

Type Scheme Key
DOI http://sciencebase.gov/vocab/identifierScheme http://dx.doi.org/10.1002/ppp.656
ISSN http://sciencebase.gov/vocab/identifierScheme 1045-6740, 1045-6740

Citation Extension

journalPermafrost and Periglacial Processes
parts
typeNotes
value9321
typePages
value235-256
typeVolume
value20
typeNumber
value3
citationTypeJournal Article

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