GEOSCAN, résultats de la recherche


TitreLandslide hazards mapping and permafrost slope InSAR monitoring, Mackenzie Valley, Northwest Territories, Canada
AuteurCouture, R; Riopel, S
SourceLandslides and engineered slopes. From the past to the future, proceedings of the 10th international symposium on landslides and engineered slopes; par Chen, Z (éd.); Zhang, J (éd.); Li, Z (éd.); Wu, F (éd.); Ho, K (éd.); 2008 p. 1151-1155,
Séries alt.Secteur des sciences de la Terre, Contribution externe 20110013
ÉditeurCRC Press
Réunion10th International Symposium on Landslides and Engineered Slopes; Xi'an; CN; juin 30 - juillet 4, 2008
Mediapapier; en ligne; numérique
ProvinceTerritoires du Nord-Ouest
SNRC106O/05; 106O/06; 106O/07; 106O/10; 106O/11; 106O/12
Lat/Long OENS-132.0000 -130.5000 67.7500 67.2500
Sujetstélédétection; pergélisol; congélation du sol; glace fossile; glissements de terrain; dépôts de glissement de terrain; dépôts de pentes; glissements de pentes; stabilité des pentes; pipelines; géologie des dépôts meubles/géomorphologie; géologie de l'ingénieur
Illustrationslocation maps; photographs; pie charts; diagrams
Diffusé2010 08 04
Résumé(disponible en anglais seulement)
A 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.