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TitleGround ice determinations along the Yukon coast using a morphological model
AuthorCouture, N J; Pollard, W H
SourceProceedings of GEOQuébec 2015; 2015 p. 1-6
Year2015
Alt SeriesEarth Sciences Sector, Contribution Series 20150343
MeetingGEOQuébec 2015, 68th Canadian Geotechnical Conference and 7th Canadian Permafrost Conference; Quebec City; CA; September 20-23, 2015
Documentserial
Lang.English
Mediapaper; on-line; digital
RelatedThis publication is related to Couture, N J; Pollard, W H; Couture, N J; Pollard, W H; (2015). Ground ice determinations along the Yukon coast using a morphological model; Ground ice determinations along the Yukon coast using a morphological model; Ground ice determinations along the Yukon coast using a morphological model; Ground ice determinations along the Yukon coast using a morphological model, GEOQuébec 2015, conference program and abstracts
File formatpdf
ProvinceYukon; Northern offshore region
NTS117A/08; 117A/09; 117A/10; 117A/13; 117A/14; 117A/15; 117A/16; 117C/01; 117C/07; 117C/08; 117D/02; 117D/03; 117D/04; 117D/05; 117D/06; 117D/12
AreaYukon Coast; Beaufort Sea; Komakuk; Kay Point; Herschel Island
Lat/Long WENS-141.0000 -136.2500 69.7500 68.2500
Subjectssurficial geology/geomorphology; marine geology; permafrost; ground ice; ground temperatures; freezing ground; coastal environment; coastal studies; coastal erosion; coastal management; vegetation; terrain management
Illustrationslocation maps; photographs; diagrams; tables; histograms
ProgramCoastal Infrastructure, Climate Change Geoscience
AbstractPermafrost in the Canadian western Arctic contains large amounts of ground ice and a geomorphological model is used to estimate ground ice content. The Yukon coastline was divided into 44 different terrain units based on geology, coastal morphology, and the presence of different types of ground ice. The overall volume of ground ice within a terrain unit was assessed based on the stratigraphic relationships between different ice types. Ice volumes in the various terrain units ranged from 0 to 74% and were a function of surficial material. Across the entire study area, ground ice accounts for 46% by volume of all earth materials. Pore ice and thin segregated lenses account for 76% of the total ground ice, massive ice accounts for 21%, and wedge ice for 3%.
Summary(Plain Language Summary, not published)
Permafrost in the Canadian western Arctic contains large amounts of ground ice and the volume of ice is of interest, since it is a major contributing factor in the response of the permafrost system to environmental changes or to development. A geomorphological model was used to estimate ground ice content in different terrain units along the Yukon coast. The overall volume of ground ice is assessed based on the geometric relationships between various types of ground ice. The results show that ground ice makes up 0 to 74% of the coastal bluffs by volume and varies depending on the type of terrain unit.
GEOSCAN ID297501