Multispectral permafrost terrain classification, Rankin Inlet, Nunavut / G.A. Oldenborger, B. Faucher, and A.-M. LeBlanc. : M183-2/8824E-PDF

"Permafrost conditions can exhibit heterogeneity and variability over the landscape in response to variations in surficial geology, availability of water, vegetation, and other factors. Information on permafrost conditions is important for predicting the response of the landscape to warming, and its sustainability as an engineering substrate in terms of thaw subsidence. However, the scarcity of permafrost data may prevent the characterization of permafrost and thermophysical conditions at a regional scale. Remote sensing data can be used to extend on-the-ground knowledge, provided that a relationship can be established between the remotely sensed data and permafrost conditions. Multispectral satellite images provide a band-limited representation of the spectral reflectance of the land surface that contains information on the constituent materials and land cover. Many of the same factors that influence spectral reflectance, such as material type, vegetation and soil moisture also influence permafrost. As such, there may exist some relationship to be learned between multispectral data and permafrost conditions. This report explores the potential for permafrost terrain mapping via supervised classification of multispectral satellite imagery and supporting data in the vicinity of Rankin Inlet, Nunavut"--Introduction, page 3.

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