Determining landslide susceptibility in Central Taiwan from rainfall and six site factors using the analytical hierarchy process method.
作者： Chun-Hung Wu , Su-Chin Chen
DOI: 10.1016/J.GEOMORPH.2009.06.002
关键词:
摘要: This work provides a landslide susceptibility assessment model for rainfall-induced landslides in Central Taiwan based on the analytical hierarchy process method. The considers rainfall and six site factors, including slope, geology, vegetation, soil moisture, road development historical landslides. factor consists of 10-day antecedent total during event. Landslide values are calculated both before after beginning 175 cases with detailed field surveys used to determine landslide-susceptibility threshold value 9.0. When exceeds value, slope failure is likely occur. Three zones different levels (below, slightly above, far above threshold) identified. 9149 caused by Typhoon Toraji utilized validate study's result. Approximately, 0.2%, 0.4% 15.3% typhoon-caused located three zones, respectively. villages 6.6%, 4.9% respectively accuracy map analyze main causes can be evaluate relative accumulated rainfall, useful as an early warning monitoring tool.
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