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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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Long-Term Monitoring of Permafrost Temperature, Active Layer Thickness and Surface Settlement in the Mackenzie Valley, NWT
Presenter: Caroline Duchesne
A permafrost and active layer monitoring network, established in the Mackenzie Valley and Delta (NWT) by the Geological Survey of Canada, has been maintained since the 1980s.
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The Thermokarst Environments of Northwestern Canada
Presenter: Steven Kokelj
Thermokarst is the geomorphic manifestation of permafrost thaw. The first systematic aerial inventory and characterization of thaw-sensitive permafrost terrain was initiated for Northwest Territories
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Modeling Contaminant and Nutrient Transport in Permafrost-Affected Groundwater Systems
Presenter: Aaron Mohammed
Understanding the impacts of permafrost freeze-thaw dynamics on groundwater flow and solute transport is imperative to quantify terrestrial feedbacks to climate change
