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TitleA ground ice atlas of Canada
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorWolfe, S AORCID logo; O'Neill, H BORCID logo; Duchesne, CORCID logo
SourceGeological Survey of Canada, Open File 8770, 2021, 35 pages (1 sheet), Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
MapsPublication contains 1 map
Map Info.surficial geology, ground ice
Mediaon-line; digital
RelatedNRCan photo(s) in this publication
File formatreadme
File formatpdf; rtf
ProvinceCanada; British Columbia; Alberta; Saskatchewan; Manitoba; Ontario; Quebec; New Brunswick; Nova Scotia; Prince Edward Island; Newfoundland and Labrador; Northwest Territories; Yukon; Nunavut; Canada
NTS1; 2; 3; 10; 11; 12; 13; 14; 15; 16; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 52; 53; 54; 55; 56; 57; 58; 59; 62; 63; 64; 65; 66; 67; 68; 69; 72; 73; 74; 75; 76; 77; 78; 79; 82; 83; 84; 85; 86; 87; 88; 89; 92; 93; 94; 95; 96; 97; 98; 99; 102; 103; 104; 105; 106; 107; 114O; 114P; 115; 116; 117; 120; 340; 560
Lat/Long WENS-141.0000 -50.0000 90.0000 41.7500
Subjectssurficial geology/geomorphology; environmental geology; Nature and Environment; Science and Technology; permafrost; ground ice; periglacial features; thermokarst; climate; geological history; vegetation; environmental controls; models; Climate change; permafrost thaw
Illustrationsschematic representations; location maps; geoscientific sketch maps; photographs; satellite images
ProgramClimate Change Geoscience Permafrost
Released2021 03 23
AbstractThis Open File summarizes ground ice information from 31 sites across the permafrost regions in Canada. The poster presents a map with photographs from each site, and estimates of ground ice abundance from segregated, wedge, and relict ice in top 5 m of permafrost, derived from national-scale mapping by O'Neill et al. (2019; 2020). The sites represent a range of environmental conditions (climate, surficial geology, geological history, vegetation) spanning the continuous and discontinuous permafrost zones in Canada. The report in the Open File provides detailed site descriptions, comments on the modelled ground ice abundance compared to observations of ground ice from the area, the implications of ground ice conditions for thaw processes (thermokarst), and references to key literature. The atlas illustrates the varied ground ice conditions in northern Canada and the associated environmental conditions that control ice type and abundance. Furthermore, the atlas serves as a means to validate and improve recent national-scale ground ice mapping by identifying conditions not well represented by the modelling. This validation has highlighted that an updated national surficial geology dataset that incorporates the latest large-scale GSC mapping would improve the model outputs in many areas by more accurately depicting the distribution of frost-susceptible sediments.
Summary(Plain Language Summary, not published)
This atlas highlights ground ice conditions and associated terrain types in Canada. Thirty-one examples from across northern Canada are featured on the new Ground Ice Map of Canada. The map depicts the total ground ice abundance in the top 5 metres of permafrost. The photographs show different permafrost landscapes and thermokarst terrains associated with ground ice types (segregated, relict, and wedge ice) and abundance. The poster illustrates the associations between modelled ground ice distribution and the observed permafrost landscapes and thermokarst features in Canada. It highlights the diverse nature of ice-rich permafrost terrain susceptible to thawing in northern Canada and serves as an informative learning and outreach tool.

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