Abstract: With increasing development in areas of discontinuous permafrost, greater emphasis is being placed on slope hazard assessment. The current research project was initiated in response to the occurrence of a large flow-type slide, the Magundy River landslide, with the aim of identifying and characterizing slope hazards in the Little Salmon Lake area of the central Yukon. Terrain evaluation studies identified over 35 areas of past and present landslide activity in the project area. Field work was completed in the summer of 2004 to obtain ground truth for the terrain evaluation and to further characterize the most prominent and active landslides. This paper provides an overview of the research project and summarizes observations on four distinct landslide processes found in the Little Salmon Lake area: debris flow, rock slumping, bimodal flow and multiple retrogressive slumping.

Authors: Lyle, R.R., Hutchinson, D.J., and Preston, Y.

Keywords: landslides, Little Salmon Lake, Permafrost

NTS Mapsheet(s): 105L01, 105L02

Citation: Lyle, R.R., Hutchinson, D.J., and Preston, Y., 2005. Landslide processes in discontinuous permafrost, Little Salmon Lake (NTS 105L/1 and 2), south-central Yukon. In: Yukon Exploration and Geology 2004, Emond, D.S., Lewis, L.L., and Bradshaw, G.D. (eds.), Yukon Geological Survey, p. 193-204.

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