Abstract
A strong earthquake not only triggered large numbers of co-seismic landslides but also contributed afterwards to an increase in rainfall triggered landslide activity and the development of devastating debris flows. In this paper, a typical catchment of the Hongchun gully near the epicenter of the Wenchuan earthquake (Sichuan Province, China) was chosen as a case study area, for a remote sensing analysis of landslide evolution and debris flow development prior to and after the Wenchuan earthquake. This study reveals that earthquake shaking severely disturbed surface strata, posing a potential continuing hazard in the region, as the slopes are very susceptible to future land sliding and debris flows under heavy rainfall conditions.
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Acknowledgments
This work was supported by National Basic Scientific Research Project (2011FY110100) and Research Foundation of the State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (SKLGP2011Z008). Dr. Th.W.J. van Asch (Utrecht University, The Netherlands) helped to improve the language of the paper.
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Tang, C., Jiang, Z., Li, W. (2015). Seismic Landslide Evolution and Debris Flow Development: A Case Study in the Hongchun Catchment, Wenchuan Area of China. In: Lollino, G., et al. Engineering Geology for Society and Territory - Volume 2. Springer, Cham. https://doi.org/10.1007/978-3-319-09057-3_72
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DOI: https://doi.org/10.1007/978-3-319-09057-3_72
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