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TitleA test plot study of a permafrost slope in Mackenzie Valley, NWT
AuthorWang, B; Paudel, B; Li, H
SourceProceedings of GeoManitoba 2012, 65th Canadian Geotechnical Conference; 2012 p. 1-7
Year2012
Alt SeriesEarth Sciences Sector, Contribution Series 20120069
MeetingGeoManitoba 2012, 65th Canadian Geotechnical Conference; Winnipeg; CA; September 30 - October 3, 2012
Documentbook
Lang.English
Mediapaper
File formatpdf
ProvinceNorthwest Territories
NTS106O/06
AreaMackenzie Valley; Mackenzie River
Lat/Long WENS-132.0000 -131.0000 68.0000 67.2500
Subjectssurficial geology/geomorphology; permafrost; freezing ground; ground ice; ground temperatures; slope failures; slope stability; slope stability analyses; Cenozoic; Quaternary
Illustrationslocation maps; photographs; plots
ProgramProgram Management - Climate Change Science, Climate Change Geoscience
AbstractTwo test plots were developed near a retrogressive thaw slide in the Mackenzie valley, about 120 km southeast of Inuvik, Northwest Territories. The area was burnt 1998 that destroyed all trees and vegetation. The test plots were developed by excavating a surface area of 6 m x 20 m each on a gentle slope of about 10º. Surface materials were removed with hand shovels to a depth of 0.5 m and 0.6 m respectively. Inclinometers were installed in the test plots. Ground surface subsidence and thaw depth were measured. In one year, the maximum thaw depth increased by 60 cm to 78 cm. The ground surface subsided by 10 cm to 30 cm. The slope deformed about 12 mm to 30 mm. Slip surface was detected near the original permafrost table.
GEOSCAN ID291443