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Emergency assessment of seismic landslide susceptibility: a case study of the 2008 Wenchuan earthquake affected area

Date: 2018-06-01      View counts: 169    

Label:

Language
English
Author
Tang Chuan, Zhu Jing, Liang Jingtao
Journal
Earthquake Engineering and Engineering Vibration
Class
Analysis of earthquake disaster
Year
2009
Paper Keyword
landslide; susceptibility; GIS; Wenchuan earthquake; Qingchuan area
Abstract
The 8.0 Mw Wenchuan earthquake triggered widespread and large scale landslides in mountainous regions. An approach was used to map and assess landslide susceptibility in a given area. A numerical rating system was applied to five factors that contribute to slope instability. Factors such as lithology, topography, streams and faults have an important influence as event-controlling factors for landslide susceptibility assessment. A fi nal map is provided to show areas of low, medium, and high landslide susceptibility. Areas identifi ed as having high landslide susceptibility were located in the central, northeastern, and far south regions of the study area. The assessment results will help decision makers to select safe sites for emergency placement of refuges and plan for future reconstruction. The maps may also be used as a basis for landslide risk management in the study area.
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