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|標題:||Assessing debris-flow hazard in a watershed in Taiwan||作者:||Lin, P.S.
|關鍵字:||debris flow;watershed;geographic information system;hazard assessment||Project:||Engineering Geology||期刊/報告no：:||Engineering Geology, Volume 66, Issue 3-4, Page(s) 295-313.||摘要:||
This paper presents the results of a pilot study for assessing debris-flow hazards using geographic information system (GIS) techniques. The watershed of the Chen-Yu-Lan River is investigated in this pilot study. Factors that are believed to be critical to the occurrence of debris flow are identified and considered in the assessment of debris-flow hazards. Using the spatial analysis feature of GIS, the impact of these factors, expressed in terms of debris-flow hazard (DH) index, is calculated. By taking a simple summation of all DH indexes according to each factor, the overall debris-flow hazard at a particular watershed may be assessed. The applicability of the proposed approach for analyzing the watershed of the Chen-Yu-Lan River has been confirmed with the field observations in a recent typhoon event. (C) 2002 Elsevier Science B.V. All rights reserved.
|Appears in Collections:||土木工程學系所|
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