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TitleThermokarst ponding, North Slave region, Northwest Territories
DownloadDownloads
AuthorMorse, P D; McWade, T L; Wolfe, S A
SourceGeological Survey of Canada, Open File 8205, 2017, 30 pages, https://doi.org/10.4095/300531
Year2017
PublisherNatural Resources Canada
Documentopen file
Lang.English
Mediaon-line; digital
File formatreadme
File formatpdf; rtf; dbf; prj; shp; xml
ProvinceNorthwest Territories
NTS85J/06; 85J/07; 85J/09; 85J/10; 85J/11; 85J/14; 85J/15; 85J/16
AreaGreat Slave Lake; North Arm; Behchoko; Yellowknife; North Slave region
Lat/Long WENS-115.3333 -114.4167 62.9667 62.4167
Subjectssurficial geology/geomorphology; environmental geology; permafrost; ground ice; thermokarst; surface waters; climate, arctic; climate effects; transportation; lakes; remote sensing; airphoto interpretation; satellite imagery; source areas; glacial deposits; glaciolacustrine deposits; organic deposits; topography; mining activities; borrow pits; Great Slave Lowland; Great Slave Upland; climate change; infrastructure; roads; discontinuous permafrost; permafrost degradation; quantification; anthropogenic deposits; elevation; Phanerozoic; Cenozoic; Quaternary
Illustrationslocation maps; aerial photographs; satellite images; tables; sketch maps; histograms; bar graphs
ProgramPermafrost, Climate Change Geoscience
Released2017 04 20
AbstractThis open file provides an inventory of thermokarst pond development between 1945 and 2005 in a study area that is representative of the southern North Slave region between Behchoko and Yellowknife, Northwest Territories. The primary purpose of this inventory is to approximate the location and size of thermokarst ponds in a study area representative of the region to assist in better understanding present and future permafrost conditions. Because construction of the GNWT Highway 3 in the mid-1960s utilized locally-available fine-grained materials sourced along the right-of-way, we examine potential thermokarst initiation at those sites and compare ponding adjacent to the highway with results for the region. The inventory and database were prepared to evaluate the dominant controls on the distribution of thermokarst in the region, and the potential influence that highway construction may have had on thermokarst development. The accompanying shapefile format data can be used in a GIS to place areas of thermokarst ponds onto digital maps for referencing.
Summary(Plain Language Summary, not published)
This Open File provides an inventory of permafrost thaw-pond (thermokarst pond) development between 1945 and 2005 in a study area representative of the southern North Slave region between Behchoko and Yellowknife, Northwest Territories. The primary purpose of this inventory is to approximate the location and size of thermokarst ponds to assist in better understanding present and future permafrost conditions. Construction of the Northwest Territories Highway 3 in the mid-1960s utilized locally-available materials sourced along the right-of-way, thus we examine potential thermokarst pond initiation at those sites. The inventory database was prepared to evaluate the dominant controls on the distribution of thermokarst in the region, and the potential influence that highway construction may have had on thermokarst development. The accompanying shapefile format data can be used in a GIS to place areas of thermokarst ponds onto digital maps for referencing.
GEOSCAN ID300531