An Empirical Model for the Volume-Change Behavior of Debris Flows

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by S. H. Cannon, U.S. Geological Survey, Denver, United States,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering:

Abstract: The potential travel down hillsides; movement stops where the volume-change behavior of flows as they travel down hillsides ; movement stops where the volume of actively flowing debris becomes negligible. The average change in volume over distance for 26 recent debris flows in the Honolulu area was assumed to be a function of the slope over which the debris flow traveled, the degree of flow confinement by the channel, and an assigned value for the type of vegetation through which the debris flow traveled. Analysis of the data yielded a relation that can be incorporated into digital elevation models to characterize debris-flow travel on Oahu.

Subject Headings: Solids flow | Debris | Channel flow | Empirical equations | Confined flow | Hydrologic models | Data processing | Travel patterns | Slopes | North America | Hawaii | Honolulu | United States

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