Structural Control of Ground-Water Induced Debris Flows
by Souren Ala, Texas A&M Univ, United States,Christopher C. Mathewson, Texas A&M Univ, United States,
Document Type: Proceeding Paper
Part of: Hydraulics/Hydrology of Arid Lands (H?AL)
Abstract:
A number of case studies have attributed debris flow initiation to the effect of elevated pore pressure from a bedrock ground-water source. Debris flows on slopes underlain by Precambrian metamorphic rocks of the Wasatch Front, Utah, fall into this category. Bedrock structural trends suggest that northwest-trending faults are avenues for ground-water flow. This may explain the higher number of debris flows on slopes intersecting fault traces.
Subject Headings: Groundwater flow | Water pressure | Debris | Solids flow | Pore water | Bedrock | Structural control | Utah | United States
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