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Coupling Analysis of Control Factors Between Earthquake-Induced Landslides and Subsequent Rainfall-Induced Landslides in Epicenter Area of Wenchuan Earthquake
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摘要

    

This paper selects typical study area in epicenter area of the Beichuan as the site for the landslides interpretations induced after the Wenchuan earthquake 2008 and the strong rainfall on September 24, 2009.It bases on high-resolution aerial photographs and remote sensing SPOT 5 imagery. The results show that the number of the earthquake-induced landslides is 1999. The number of the rainfall-induced landslides is 828.the rainfall enlarged the 150 earthquake-induced landslides. On the basis of remote sensing data interpretation, the paper further analyze the induced landslides, carries out the trends, hazard and risk evaluation, which provides a scientific prediction basis. The findings in this paper can be useful to the Wenchuan Earthquake restoration and reconstruction in disaster mitigation and preparedness and provide the decision-makers to carry out earthquake-induced landslides and rainfall-induced landslides scale contrast and control factor coupling analysis and the earthquake and rainfall coupling disasters chain mode.

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