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TitleLandslide hazards mapping and permafrost slope InSAR monitoring, Mackenzie Valley, Northwest Territories, Canada
AuthorCouture, R; Riopel, S
SourceLandslides and engineered slopes. From the past to the future, proceedings of the 10th international symposium on landslides and engineered slopes; by Chen, Z (ed.); Zhang, J (ed.); Li, Z (ed.); Wu, F (ed.); Ho, K (ed.); 2008 p. 1151-1155,
Alt SeriesEarth Sciences Sector, Contribution Series 20110013
PublisherCRC Press
Meeting10th International Symposium on Landslides and Engineered Slopes; Xi'an; CN; June 30 - July 4, 2008
Mediapaper; on-line; digital
File formatpdf
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; permafrost; freezing ground; ground ice; landslides; landslide deposits; slope deposits; slope failures; slope stability; pipelines; InSAR
Illustrationslocation maps; photographs; pie charts; diagrams
Released2010 08 04
AbstractA regional landslide hazards assessment was initiated by the Geological Survey of Canada along a proposed gas pipeline route in the Mackenzie Valley in Canada. This paper briefly presents the methodology and results of the three main activities of the assessment: i) Landslide mapping and inventorying; ii) Landslide susceptibility mapping; and iii) Application of an emerging InSAR technique for slope monitoring. The proposed pipeline corridor is a prone-landslide area with an average density of one landslide per 5 km2. Dominant landslide types are retrogressive thaw flows (28%) and active layer detachments (26%). About 47% of all landslides took place in moraine deposits. Comparison between landslide susceptibility zones and mapped landslide occurrences confirms that the applied qualitative parametric method appears a very promising tool for land management and landslide hazards mapping. Finally, a large number of man-made coherent targets have been deployed successfully for the first time in Canada's permafrost regions.

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