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Characteristics of Earthquakes in Mountain Areas and Post-earthquake Management

  • Runqiu Huang
  • Weile Li
Chapter

Abstract

Using the Geographic Information Systems (GIS) technique and remote-sensing images and aerial photographs collected from the Wenchuan earthquake region, this chapter analyzes the occurrence of geo-hazards and their correlations with the distance from the co-seismic fault, slope steepness, elevation, and rock type. Our findings show that the geo-hazards triggered by earthquakes are distributed along co-seismic fault and rivers. Specifically, geo-hazards tend to concentrate in areas near the hanging wall of co-seismic fault more than in those near the footwall. The slope’s steepness is also a key factor deciding the development of quake-induced geo-hazards, since most of the latter are distributed at the mountain areas within the range of 20–50°. In addition, geo-hazards are found to have a close relationship to the elevation and micro-landform and that thin ridge, isolated or full-face space mountains are most sensitive to seismic waves, and thus have a striking amplification effect on geo-hazards. Lastly, we suggest that the above findings may serve as an important basis for the reconstruction of earthquake-hit mountain regions.

Keywords

Geographic Information System Wenchuan Earthquake Hanging Wall Hydropower Development Ecological Compensation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  1. 1.State Key Laboratory of Geo-hazards Prevention and Geo-environmental ProtectionChengdu University of TechnologyChengduChina

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