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Interactive effects of wildfire and climate on permafrost degradation in Alaskan lowland forests

Dates

Year
2015

Citation

Brown, Dana R. N., Jorgenson, M. Torre, Douglas, Thomas A., Romanovsky, Vladimir E., Kielland, Knut, Hiemstra, Christopher, Euskirchen, Eugénie S., and Ruess, Roger W., 2015, Interactive effects of wildfire and climate on permafrost degradation in Alaskan lowland forests: Journal of Geophysical Research: Biogeosciences, v. 120, no. 8, p. 1619-1637.

Summary

We examined the effects of fire disturbance on permafrost degradation and thaw settlement across a series of wildfires (from ~1930 to 2010) in the forested areas of collapse-scar bog complexes in the Tanana Flats lowland of interior Alaska. Field measurements were combined with numerical modeling of soil thermal dynamics to assess the roles of fire severity and climate history in postfire permafrost dynamics. Field-based calculations of potential thaw settlement following the loss of remaining ice-rich permafrost averaged 0.6 m. This subsidence would cause the surface elevations of forests to drop on average 0.1 m below the surface water level of adjacent collapse-scar features. Up to 0.5 m of thaw settlement was documented after recent [...]

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Additional Information

Identifiers

Type Scheme Key
DOI http://sciencebase.gov/vocab/identifierScheme 10.1002/2015JG003033
ISSN http://sciencebase.gov/vocab/identifierScheme 2169-8961

Citation Extension

journalJournal of Geophysical Research: Biogeosciences
parts
typeNotes
value11924
typePages
value1619-1637
typeVolume
value120
typeNumber
value8
citationTypeJournal Article

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