1. Debris Flow on a Seasonally Frozen Rupture Surface at Moose Lake, British Columbia
- Author
-
Menno van Hees, Marten Geertsema, Jennifer Hayek, and Marta Chiarle
- Subjects
Hydrology ,geography ,geography.geographical_feature_category ,British Columbia ,Berm ,Debris flood ,Ditch ,Landslide ,Debris flow ,Permafrost ,Snow ,Seasonal ice ,Debris ,South-facing slope ,Meltwater ,Geology - Abstract
In early month of November 2007, a 1.4 km debris flow initiated on a steep south-facing slope above Moose Lake in Mount Robson Provincial Park, British Columbia. Snow meltwater was likely concentrated along a shallow seasonally frozen rupture surface, generating high pore water pressure. The debris flow bifurcated into two concentrated gullies before distributing as a debris flood on a snow-covered fan. The debris flow crossed a twin pipeline corridor and came to rest in a ditch against a highway berm. There was no damage to infrastructure. In many ways, the landslide resembles skin flows described in permafrost zones.
- Published
- 2013
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