CGRG Bibliography of Canadian Geomorphology
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Author : Evans, S.G.
Date : 2003.
Title : Landslide risk in Canada.
Publication : 3rd Canadian Conference on Geotechnique and Natural Hazards. Sheraton Hotel. Edmonton, Alberta, Canada. June 9 and 10, 2003.
Issue :
Page(s) :
Abstract
The most damaging landslide types in Canada have been identified and include rockfalls and low magnitude rockslides, earthflows in Leda Clay, landslides from built slopes, rock avalanches, and debris flows/debris avalanches. They range in volume over six orders of magnitude from 10 1 m 3 to 10 7 m 3 and have impacted on communities and infrastructure mainly in the southern Cordillera (Alberta and British Columbia) and the St. Lawrence Lowlands of Québec. The fatal landslide risk envelope for Canada approximates a power law with an exponent of –1. The Landslide Destructiveness Index (LDI) is introduced and expresses losses in terms of the source volume of the landslide or area of resultant debris. The LDI, which is a proxy for population density, is used to explore the comparative destructiveness of landslide types and to identify a landslide-disaster threshold based on population density. Limitations of raw landslide magnitude and frequency data prevent, as yet, a complete characterisation of landslide risk.
Bibliography of Canadian Geomorphology