Relative Landslide Susceptibility in Davis County, Utah—A Multivariate Approach

by Robert T. Pack, Thurber Consultants Ltd, Victoria, BC, Can,
Loren R. Anderson, Thurber Consultants Ltd, Victoria, BC, Can,

Abstract: The complex distribution of soil properties makes prediction of slope stability extremely difficult in these mountain watersheds. The need to assess these watersheds for their susceptibility to possible future landslide activity led to the adoption of a deductive statistical method of evaluation based on external variables (i. e. geomorphology, vegetation, etc. ), rather than internal variables (i. e. soil shear strength, porewater pressure, etc. ) This paper presents the results of an analysis of relative landslide susceptibility in Davis County, Utah which uses a statistical method based on discrete discriminant analysis.

Subject Headings: Landslides | Soil analysis | Soil strength | Watersheds | Soil stabilization | Soil pressure | Slope stability | Utah | North America | United States

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