Mapping Debris-Flow Hazard in Honolulu Using a DEM

by Stephen D. Ellen, U.S.Geological Survey, Menlo Park, United States,
Robert K. Mark, U.S.Geological Survey, Menlo Park, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

A method for mapping hazard posed by debris flows has been developed and applied to an area near Honolulu, Hawaii. The method uses studies of past debris flows to characterize sites of initiation, volume at initiation, and volume-change behavior during flow. Digital simulations of debris flows based on these characteristics are then routed through a digital elevation model (DEM) to estimate degree of hazard over the area.

Subject Headings: Solids flow | Natural disasters | Debris | Public health and safety | Mapping | Flow simulation | Discrete element method | Hawaii | United States | Honolulu

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