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Proceedings Paper

Susceptibility assessment of earthquake-triggered landslide in Wenchuan
Author(s): Shu Tao; Deyong Hu; Wenji Zhao
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Paper Abstract

The Ms 8.0 Wenchuan earthquake, occurred on 12 May 2008 in Sichuan Province, collapsed a great many houses and injured hundreds of thousands of people. Undoubtedly, it can be predicted that secondary earthquake landslides will draw much attention during a long time after the earthquake due to the severe geological hazard. In order to remove threat from the secondary disasters effectively, this study used techniques of remote sensing and GIS to generate susceptibility maps, taking the case of Wenchuan County. Seven factors controlling landslide occurrence have been taken account into the susceptibility assessment, including elevation, slop, aspect, lithology, seismic intensity, distance to faults and rivers. According to the probability that predicts the possibility of landslide occurrence calculated applying information value method and logistic regression separately, the study zone was ultimately categorized into five classes, specifically, "extremely low", "low", "moderate", "high" and "very high". These results have been proved to reflect closely the spatial distributions of landslides in the study area.

Paper Details

Date Published: 3 November 2010
PDF: 8 pages
Proc. SPIE 7841, Sixth International Symposium on Digital Earth: Data Processing and Applications, 78411J (3 November 2010); doi: 10.1117/12.873273
Show Author Affiliations
Shu Tao, Capital Normal Univ. (China)
Deyong Hu, Capital Normal Univ. (China)
Wenji Zhao, Capital Normal Univ. (China)
Beijing Municipal Key Laboratory of Resources Environment and GIS (China)

Published in SPIE Proceedings Vol. 7841:
Sixth International Symposium on Digital Earth: Data Processing and Applications
Huadong Guo; Changlin Wang, Editor(s)

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