The Freezing of Peatland

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TypeTechnical Report
Series titleTechnical Paper, Division of Building Research, National Research Council Canada; Issue 381
Physical description40 p.
SubjectPermafrost; Soils; peat; freezing; freeze thaw cycles; frost penetration; climatic loads; geotechnics
AbstractIt is estimated that peatland covers more than one million square kilometres of Canada, extending from the southernmost part of the country to the Arctic in the continuous permafrost zone. This terrain has been subjected to increasing scientific and engineering study as northern development progresses. Many geotechnical engineering activities in Canada are affected by the freezing of peatland; the operation of off-road vehicles on peat terrain, the construction of oil and gas pipelines, and the erection of temporary structures all require information on the freezing process in peat terrain. The present paper is intended to give engineers and other workers a practical appreciation of the rate of freezing and thawing, depth of frost penetration and thaw, and the influence of climate and terrain on these processes. It is based on information available in the literature and on field observations at two sites, one the Mer Bleue peat bog near Ottawa in the zone of seasonal freezing, the other at Thompson, Manitoba, in the middle of the discontinuous permafrost zone.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number12881
NPARC number20373852
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Record identifier59048809-de38-4aa9-a4d5-23800e7d5637
Record created2012-07-23
Record modified2016-10-03
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