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The Establishment of a Landslide Hazard Analysis Model for the Taipei Water Source Domain
landslide hazard analysis
Taipei Water Source Domain
Landslide hazard assessment includes the landslide spatial probability, temporal probability, and the probability of landslide area (or volume). Seven geomorphological factors and two rainfall factors, evaluated as effective factors because of the higher correlation with the landslide distribution, were considered in the landslide susceptibility model. The probabilities of landslide area (or volume) were developed by transforming the power law formula in the landslide frequency-area (or volume) distribution. Then, the landslide spatial probability and exceeding probability of different rainfall events as well as the probability of landslide area were used to predict the annual probability of each slope-unit with a landslide area greater than the threshold. The slope-units with high landslide probability were distributed over the upstream Nan-Shih Stream basin, which is the main region for managing serious sediment-related hazards in the future.
|Appears in Collections:||第43卷 第04期|
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