Abstract
A strong earthquake can cause a large number of landslides and avalanches, which can initiate causal disaster chains. A representative disaster chain is that a coseismic landslide can block a river and form a landslide dam, which may burst and cause a catastrophic flood. In order to disclose the serious impacts of the disaster chain induced by earthquake, this paper presented the form process of disaster chain and proposed some cutting measures. According to the developmenting process, the disaster chain from the 2008 Wenchuan earthquake was discussed. Firstly, the characteristics of both earthquake induced landslides and landslide dams are summarized in this paper. Secondly, four characteristics of debris flow also presented. Thirdly, two measures for cutting the chain are proposed, one is the landslide hazard map constructing on susceptibility analysis and the other is numerical simulation of debris flows for assessment of dangerous zone. The results of this study can help the authority make the right decision rapidly to take appropriate counter measures to reduce the risk of the disaster chain or cut it directly.
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Acknowledgments
The presented research work and the preparation of this paper have received financial support from the Global Environment Research Found of Japan (S-8),Grants-in-Aid for Scientific Research (Scientific Research (B), 22310113, G. Chen) from JSPS (Japan Society for the Promotion of Science). These financial supports are gratefully acknowledged.
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Chen, G., Li, Y., Zhang, Y., Wu, J. (2013). The Disaster Chain of Earthquake Induced Landslides. In: Ugai, K., Yagi, H., Wakai, A. (eds) Earthquake-Induced Landslides. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-32238-9_103
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DOI: https://doi.org/10.1007/978-3-642-32238-9_103
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