Density distribution of landslides triggered by the 2008 Wenchuan earthquake and their relationships to peak ground acceleration

Ren Mao Yuan, Qing Hai Deng, Dickson Cunningham, Chong Xu, Xi Wei Xu, Chung Pai Chang

研究成果: 雜誌貢獻期刊論文同行評審

58 引文 斯高帕斯(Scopus)

摘要

The distribution of landslides induced by the 2008 Mw 7.9 Wenchuan earthquake was investigated following the method of Meunier et al. (2007) to examine the relationships to peak ground acceleration (PGA). Results suggest that landslide densities are quantifiably related to PGA. Thresholds of PGAcr for landslide failure are 0:21g for average horizontal PGA and 0:12g for average vertical PGA. As with other earthquakes, the distribution of the Wenchuan earthquake-triggered landslides can be described by two equations, based on area and source densities, respectively. The similar damping factors of ~20 in these two equations suggest that both density distribution patterns of landslides reflect the dissipation of seismic energy. Landslide-derived PGA equations were then produced for the hanging-wall region of the earthquake-affected area. The results indicate that it should be possible to produce an earthquake shake map from the distribution of earthquake-triggered landslides in an area where there are few or no seismic instruments but many landslides.

原文???core.languages.en_GB???
頁(從 - 到)2344-2355
頁數12
期刊Bulletin of the Seismological Society of America
103
發行號4
DOIs
出版狀態已出版 - 8月 2013

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