Some Aspects of Airphoto Interpretation of Permafrost in Canada

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TypeTechnical Report
Series titleTechnical Paper, Division of Building Research, National Research Council Canada; Issue 409
Physical description60 p.
SubjectPermafrost; Soils; aerial photography; north america; tests
AbstractAerial photography is an indispensable tool in the investigation of permafrost and the terrain in which it exists, particularly in the Far North where large-scale topographic map coverage is sparse. Its use in interpreting permafrost conditions in northern Canada has assumed steadily increasing importance since the Second World War as the region undergoes expanding resource development. Vertical or trimetragon photographic coverage from 20,000 or 30,000 ft altitude for the entire country, including the permafrost region, has been available for twenty years and many areas are now covered by airphotos from lower altitudes. This paper deals only with black and white panchromatic aerial photographs and their application to problems of interpreting permafrost conditions in northern Canada. Much has been written in Canada, the United States and the U.S.S.R. on this subject and some of the major references are listed.
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AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number13804
NPARC number20375570
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Record identifier8708972b-2b46-447e-b5a7-ea0e99dd6cb8
Record created2012-07-23
Record modified2016-10-03
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