Regional assessment of landslide impact in the Three Gorges area, China, using ASTER data: Wushan-Zigui |
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| Authors: | I G Fourniadis J G Liu P J Mason |
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| Institution: | (1) Department of Earth Science and Engineering, Imperial College of Science, Technology and Medicine, Prince Consort Road, London, SW7 2AZ, UK |
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| Abstract: | This paper is focussed on the hazard impact of landslides in the Three Gorges, and represents the progression of our ongoing
study on regional land instability assessment in the Three Gorges area using imagery data from the Advanced Spaceborne Thermal
Emission Radiometer (ASTER). The key development here is the establishment of a model that integrates land instability with
several factors that can relate hazard to human life, such as slope failures occurring in proximity to built-up areas and
roads, and areas of high landslide risk along the bank of Yangtze and its major tributaries. The method correctly identifies
some of the known destructive landslides in the region, like Qianjiangping and Huangtupo, as belonging to areas of potentially
high landslide impact. Our results suggest that several population centres, including the towns of Wushan and Badong, are
rated at high landslide hazard levels. This study highlights the importance of differentiating between landslide types within
susceptibility assessment, and identifies those locations in the Three Gorges where the probability of landslide occurrence
with negative impact to life and property is greatest. |
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| Keywords: | Potential landslide impact Multivariate hazard assessment ASTER Three Gorges Project China |
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