Reliability-Based Delineation of Debris-Flow Deposition Areas

Gwo-Fong Lin (), Lu-Hsien Chen and Jun-Nan Lai

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2004, vol. 32, issue 3, 395-412

Abstract: In this paper, a methodology is proposedfor the delineation of debris-flow deposition areas.First, based on the theory of reliability,the delineated hazardous area is defined. Then,uncertainty analyses of all the uncertainparameters affecting the probable maximum length,width and thickness are performed. Finally,the proposed methodology is applied to an actualsite susceptible to debris flow. It is foundthat the maximum deposition length is much moreuncertain than the maximum deposition width.The delineated hazardous areas for variousreliability are obtained using the inversefirst-order second moment method. The proposedmethodology is recommended for the delineation ofdebris-flow hazardous areas, because theinfluence of all the uncertainparameters is considered. Copyright Kluwer Academic Publishers 2004

Keywords: debris flow; deposition area; hazardous area; uncertainty analysis; reliability (search for similar items in EconPapers)
Date: 2004
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DOI: 10.1023/B:NHAZ.0000035566.03413.21

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