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TitleInSAR monitoring of a retrogressive thaw flow at Thunder River, lower Mackenzie
AuthorSinghroy, V; Murnaghan, K; Couture, R
SourceGeo2010, proceedings of the 63rd Annual Canadian Geotechnical Conference and the 6th Canadian Permafrost Conference; 2010 p. 1317-1322
Alt SeriesEarth Sciences Sector, Contribution Series 20110014
MeetingGeo2010: 63rd Canadian Geotechnical Conference and the 6th Canadian Permafrost Conference; Calgary; CA; September 12-16, 2010
ProvinceNorthwest Territories
NTS106O/05; 106O/06; 106O/07; 106O/10; 106O/11; 106O/12
AreaMackenzie Valley; Travaillant Lake; Thunder River
Lat/Long WENS-132.0000 -130.5000 67.7500 67.2500
Subjectssurficial geology/geomorphology; engineering geology; remote sensing; deformation; permafrost; freezing ground; ground ice; landslides; landslide deposits; slope deposits; slope failures; slope stability; pipelines; InSAR
Illustrationslocation maps; photographs; plots; images
ProgramSecure Canadian Energy Supply
Released2010 01 01
AbstractIn this study we analysed 55 RADARSAT 1 InSAR images acquired from August 2006-July 2010 to monitor deformation of permafrost slopes along the Mackenzie Valley Pipeline Corridor. Results from two corner reflectors installed near a landslide show a 10 and 20 cm motion from 2006-2010. Our InSAR measurement also shows that the lower steeper slope is moving faster than upper slope. This differential motion may be due to a combination of thaw depth, slope angle and ground moisture.

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