Reliability-Based Delineation of Debris-Flow Deposition Areas
Resource
Natural Hazards 32 (3): 395-412
Journal
Natural Hazards
Journal Volume
32
Journal Issue
3
Pages
395-412
Date Issued
2004
Date
2004
Author(s)
Abstract
In this paper, a methodology is proposed for 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 uncertain parameters affecting the probable maximum length, width and thickness are performed. Finally, the proposed methodology is applied to an actual site susceptible to debris flow. It is found that the maximum deposition length is much more uncertain than the maximum deposition width. The delineated hazardous areas for various reliability are obtained using the inverse first-order second moment method. The proposed methodology is recommended for the delineation of debris-flow hazardous areas, because the influence of all the uncertain parameters is considered. © 2004 Kluwer Academic Publishers.
Type
journal article
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