Occurrence of permafrost in Canadian peatlands

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Pages174181; # of pages: 8
SubjectPermafrost; Soils; peat; cold regions; aerial photography
AbstractPermafrost underlies about one-half of the total land area of Canada and occurs extensively in peatlands. The discontinuous permafrost zone, which is located mostly in the subarctic, lies in the belt of greatest peatland concentration. The distribution of permafrost and its thermal regime in this zone, particularly in the southern fringe, are governed to a considerable degree by the thermal properties of the peat. Mapping the distribution of permafrost in peatlands is facilitated to some extent by its occurrence in such distinctive micro-relief features as peat plateaux and palsas. The identification of permafrost on aerial photographs is possible by the recognition of these features. Some differences in the occurrence of permafrost in peatlands appear to exist among the various physiographic regions, but more observations are required before completely reliable correlations can be made.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number11339
NPARC number20374536
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Record identifier321f6e86-e5ae-4917-bbeb-1f770d90e53b
Record created2012-07-23
Record modified2016-05-09
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