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TitleUsing remote sensing-based spatial modelling to assess the changes of permafrost in Wapusk National Park
AuthorZhang, Y; Li, J; Wang, X; Chen, W; Sladen, W; Dyke, L; Dredge, L; Poitevin, J; McLennan, D; Stewart, H; Kowalchuk, S; Wu, W; Kershaw, G P; Brook, R K
SourceProceeding of GEO2010, the 63rd Canadian Geotechnical Conference and the 6th Canadian Permafrost Conference; 2010 p. 1291-1297
Year2010
Alt SeriesEarth Sciences Sector, Contribution Series 20100085
MeetingGEO2010, the 63rd Canadian Geotechnical Conference and the 6th Canadian Permafrost Conference; Calgary; CA; September 12-15, 2010
Documentbook
Lang.English
Mediapaper
ProvinceManitoba
NTS54F; 54K
AreaWapusk National Park
Lat/Long WENS-94.0000 -92.5000 59.0000 57.0000
Subjectsenvironmental geology; permafrost; freezing ground; ground ice; ground temperatures; climate; climate, arctic; remote sensing; climate change
Illustrationssatellite images; histograms; plots
ProgramClimate Change Impacts and Adaptation for Key Economic and Natural Environment Sectors, Climate Change Geoscience
AbstractEach Canadian national park is required to monitor and report on the state of the park. Permafrost is an integral part of the northern landscapes and ecosystems. Observations show that permafrost is thawing in response to climate change. Northern national parks are large and expensive to access and monitor in the field. This study reports on the application of remote sensing-based spatial modelling to assess the changes of permafrost in Wapusk National Park located in the northwest of the Hudson Bay Lowlands. Permafrost was mapped at an unprecedented high resolution of 30 m by 30 m using a process-based model. Spatial input datasets were developed based on remote sensing data and site observations. The results show that the active-layer had a deepening trend throughout most of the park and that permafrost was degrading in areas in recent decades, especially in treed areas in southern regions.
GEOSCAN ID285590