Ground Ice Map of Canada

Presenter:

 

Brendan O’Neill – hughbrendan.oneill@canada.ca

 

Authors:

 
H.B. O’Neill – Geological Survey of Canada, Ottawa, ON, Canada
S.A. Wolfe – Geological Survey of Canada, Ottawa, ON, Canada
C. Duchesne – Geological Survey of Canada, Ottawa, ON, Canada
 

Summary:

We present new national-scale mapping of ground ice conditions in Canada, a product of Natural Resource Canada’s Climate Change Geoscience Program. The mapping depicts a first-order estimate of the combined volumetric percentage of excess ice in the top 5 m of permafrost from segregated, wedge, and relict ice. The estimates for the three ice types are based on previous modelling (https://doi.org/10.5194/tc-13-753-2019), and informed by published values of ground ice content and expert knowledge. The mapping offers an improved depiction of ground ice in Canada at a broad scale, incorporating current knowledge on the associations between geological and environmental conditions and ground ice type and abundance. Spatial data files of the mapping are freely downloadable from GEOSCAN: https://doi.org/10.4095/326885.

 

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