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TitleGeomorphic feature inventory along the Dempster and Inuvik to Tuktoyaktuk highway corridor, Yukon and Northwest Territories
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorSladen, W E; Parker, R J H; Morse, P DORCID logo; Kokelj, S V; Smith, S LORCID logo
SourceGeological Survey of Canada, Open File 8885, 2022, 16 pages, Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
RelatedThis publication is related to the following publications
File formatreadme
File formatpdf; csv; kml; shp
ProvinceNorthwest Territories; Yukon
NTS106E/15; 106E/16; 106F/13; 106F/14; 106K/03; 106K/04; 106K/05; 106K/06; 106K/11; 106K/12; 106K/13; 106K/14; 106L/01; 106L/02; 106L/07; 106L/08; 106L/09; 106L/10; 106L/15; 106L/16; 106M/01; 106M/02; 106M/07; 106M/08; 106M/09; 106M/10; 106M/15; 106M/16; 106N/03; 106N/04; 106N/05; 106N/06; 106N/11; 106N/12; 106N/13; 106N/14; 107B/02; 107B/03; 107B/06; 107B/07; 107B/10; 107B/11; 107B/14; 107B/15; 107C/02; 107C/03; 107C/06; 107C/07
AreaInuvik; Tuktoyaktuk; Tsiigehtchic; Fort McPherson; Eagle Plains; Dawson; Arctic Ocean; Mackenize River; Richardson Mountains; Ogilvie Mountains
Lat/Long WENS-135.0000 -133.0000 69.5000 65.7500
Subjectsenvironmental geology; surficial geology/geomorphology; Transport; geophysics; hydrogeology; Nature and Environment; Science and Technology; Health and Safety; mapping techniques; terrain sensitivity; permafrost; ground ice; periglacial features; climate effects; landslides; mass wasting; remote sensing; satellite imagery; hydrologic environment; drainage; sediments; Canadian Cordillera; Interior Plains; Arctic Coastal Plain; Canadian Digital Elevation Model; Dempster Highway; Inuvik to Tuktoyaktuk Highway; Peel Plateau; Peel Plain; Eagle Lowland; Anderson Plain; Mackenzie Delta; Tintina Trench; Klondike Plateau; Tuktoyaktuk Coastlands; Methodology; Infrastructures; Road networks; Climate change; permafrost thaw; Geographic data; Geographic information systems; Digitization; cumulative effects
Illustrationslocation maps
ProgramClimate Change Geoscience Permafrost
Released2022 04 22
AbstractThaw of permafrost and associated ground ice melt can reduce ground stability, modify terrain, and reconfigure drainage patterns affecting terrestrial and aquatic ecosystems and presenting challenges to northern infrastructure and societies. The integrity of ground-based transportation infrastructure is critical to northern communities. Geomorphic features can indicate ground ice presence and thaw susceptibility. This Geological Survey of Canada Open File presents the digital georeferenced database of landforms identified in continuous permafrost terrain using high-resolution satellite imagery. The database is for a 10 km-wide corridor centered on the Dempster and Inuvik-Tuktoyaktuk highways. This 875 km-long transect traverses a variety of geological and physiographic terrain types, including glaciated and non-glaciated terrain, in the northcentral Yukon and northwestern Northwest Territories, where variation in climate, relief, ecology, and disturbance have produced a variety of periglacial conditions. We identified geomorphic features in high-resolution (0.6 m) satellite imagery visualized in 3D, and digitized them in ArcGIS. We used custom Python scripts to populate the attributes for each geomorphic feature. A total of 8746 features were mapped by type and categorized within three main classes: hydrological (n = 1188), mass movement (n = 2435), and periglacial (n = 5123). Features were identified at 1:10 000 and mapped at 1:5000. This report presents the geospatial database in ESRI shapefile, Keyhole Markup Language (KML), and comma-delineated formats.
Summary(Plain Language Summary, not published)
Permafrost thaw and associated ground ice melt can reduce ground stability and modify terrain and drainage patterns, which affect northern ecosystems, infrastructure, and societies. Features on the landscape can indicate ground ice presence. We mapped 8756 landscape features associated with ground ice along the Dempster and Inuvik-Tuktoyaktuk highways in northwestern Canada. This open file presents the digital geodatabases of these features. This information can improve understanding of the impacts of climate change on northern environments, and inform decisions regarding land-use planning, infrastructure design and maintenance, and adaptation strategies

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