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

  • Chuan Tang
  • Jing Zhu
  • Jingtao Liang
Article

Abstract

The 8.0 M w 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 final map is provided to show areas of low, medium, and high landslide susceptibility. Areas identified 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.

Keywords

landslide susceptibility GIS Wenchuan earthquake Qingchuan area 

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References

  1. Akgün A and Bulut F (2007), “GIS-based Landslide Susceptibility for Arsin-yomra (Trabzon, North Turkey) Region,” Environmental Geology, 51: 1377–1387.CrossRefGoogle Scholar
  2. Conoscenti C, Di Maggio C and Rotiglinao E (2008), “GIS Analysis to Assess Landslide Susceptibility in a Fluvial Basin of NW Sicily (Italy),” Geomorphology, 94: 325–339.CrossRefGoogle Scholar
  3. Einstein HH (1997), “Landslide Risk-systematic Approaches to Assessment and Management,” Cruden DM and Fell R, landslide Risk Assessment, Rotterdam: A.A.Balkema, pp. 51–109.Google Scholar
  4. García-Rodríguez MJ, Malpica JA, Benito B and Díaz M (2008), “Susceptibility Assessment of Earthquake-Triggered Landslides in El Salvador Using Logistic Regression,” Geomorphology, 95:172–191.CrossRefGoogle Scholar
  5. Kamp U, Growley BJ and Khattak GA (2008), “GIS-Based Landslide Susceptibility Mapping for the 2005 Kashmir Earthquake Region,” Geomorphology, 101: 631–642.CrossRefGoogle Scholar
  6. Leroi E (1996), “Landslide Hazard-risk Maps at Different Scales: Objectives, Tools and Development,” Proc. Seventh International Symposium on Landslides, Trondheim, Norway, pp. 35–52.Google Scholar
  7. Saaty TL (1980), The Analytical Hierarchy Process, New York: McGraw-Hill.Google Scholar
  8. Tang C (2004), “A Study on Landslide Risk Mapping,” Journal of Natural Disasters, 13(3): 8–12. (in Chinese)Google Scholar
  9. Westen CJ, Van Asch TWJ and Soeters R (2005), “Landslide Hazard and Risk Zonation; Why Is It Still So Difficult?” Bulletin of Engineering Geology and the Environment, the Official Journal of the International Association for Engineering Geology and the Environment: (IAEG), 65(2): 167–184.Google Scholar
  10. Varnes DJ (1984), Landslide Hazard Zonation: A Review of Principles and Practice. Paris: United Nations International.Google Scholar
  11. Yin Y (2009), “Features of Landslides Triggered by the Wenchuan Earthquake,” Journal of Engineering Geology, 17(1): 29–38. (in Chinese)Google Scholar

Copyright information

© Institute of Engineering Mechanics, China Earthquake Administration and Springer-Verlag GmbH 2009

Authors and Affiliations

  1. 1.State Key Laboratory of Geo-Hazard PreventionChengdu University of TechnologyChengduChina

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