GIS-Based Probabilistic Mapping of Landslide Hazard Using a Three-Dimensional Deterministic Model
Based on a new Geographic Information Systems (GIS) grid-basedthree-dimensional (3-D) deterministic model and taking the slopeunit as the mapping unit, this study maps landslide hazard usingthe 3-D safety factor index and failure probability. Assuming theinitial slip to be the lower part of an ellipsoid, the 3-D critical slipsurface in the 3-D slope stability analysis is located by minimizingthe 3-D safety factor using the Monte Carlo random simulation.The failure probability of the landslide is calculated using anapproximate method in which the distributions of c, Φ andthe 3-D safety factor are assumed to be in normal distribution.The method has been applied to a case study on three-dimensionallyand probabilistically mapping landslide hazard. Copyright Kluwer Academic Publishers 2004
Year of publication: |
2004
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Authors: | Xie, Mowen ; Esaki, Tetsuro ; Zhou, Guoyun |
Published in: |
Natural Hazards. - International Society for the Prevention and Mitigation of Natural Hazards. - Vol. 33.2004, 2, p. 265-282
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Publisher: |
International Society for the Prevention and Mitigation of Natural Hazards |
Subject: | Geographic Information Systems (GIS) | three-dimensional slope stability | failure probability | Monte Carlo simulation | slope unit | landslide hazard |
Saved in:
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