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TitleInsar monitoring of permafrost activity in the lower mackenzie valley, Canada
AuthorAlasset, P -J; Poncos, V; Singhroy, V; Couture, R
SourceIEEE International Geoscience and Remote Sensing Symposium proceedings vol. 3, no. 1, 4779401, 2008 p. III530-III533,
Alt SeriesNatural Resources Canada, Contribution Series 20181941
Mediapaper; on-line; digital
File formatpdf
Subjectsgeophysics; remote sensing
ProgramGEM2: Geo-mapping for Energy and Minerals
AbstractThe region of interest is located approximately in the downstream part of the Mackenzie River, Canada. Our study focuses on guidelines to process RADARSAT-1 interferometric C-band data in a permafrost environment and monitor permafrost activity and landslide motion over 18 month period. From the interferometric method (D-InSAR) on ?100 interferograms, the main conclusions are (1) a high resolution Digital Elevation Models (DEM) and a shorter satellite revisit time intervals are essential to ensure InSAR processing accuracy for small deformations associated with permafrost activity; (2) the permafrost has sustained several changes over a year of monitoring (thaw starting during end of April-mid of May, and freezing around mid October). The deformation peak is reached in the summer time between mid of May and July (up to 15 ± 2mm). This method will provide a guideline for In SAR monitoring of similar areas in permafrost environment.

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