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Wang Xiuying Nie Gaozhongup Wang Songuploans.com sh advance same daylucashadv. 2011: Ground motion acceleration criterion for judging landslide induced by the 2008 Wenchuan earthquake. Acta Seismologica Sinica, 33(1): 82-90.
Citation: Wang Xiuying Nie Gaozhongup Wang Songuploans.com sh advance same daylucashadv. 2011: Ground motion acceleration criterion for judging landslide induced by the 2008 Wenchuan earthquake. Acta Seismologica Sinica, 33(1): 82-90.
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Ground motion acceleration criterion for judging landslide induced by the 2008 Wenchuan earthquake

  • 1) Institute of Crustal Dynamic, China Earthquake Administration, Beijing 100085, China2) Institute of Geology, China Earthquake Administration, Beijing 100029, China3) China Earthquake Networks Center, Beijing 100045, China

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  • Published Date: January 19, 2011
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  • By analyzing strong ground motion records obtained from the 2008 Wenchuan MS8.0 earthquake, a ground motion acceleration parameter, named Maximum Critical Acceleration (MCA), is given in this paper. Analyzed result shows that the parameter MCA is more relevant to earthquake-induced landslide than PGA, and by using it we may solve the problems encountered in using PGA criterion to judge whether landslide can be triggered during earthquake. The MCA attenuation relation is built based on the data from the Wenchuan earthquake in Longmenshan mountain area. The appraised landslide area following the attenuation relation well fits the actual landslide distribution in the Wenchuan earthquake-hit area, indicating that this parameter is suitable for evaluating earthquake-induced landslide. Comparing MCA directly with slope critical acceleration may determine whether landslides can be triggered or not, simplifying the judging process of earthquake-induced landslide. The conclusion is that this parameter can be applied to the earthquake-induced landslides evaluation as an earthquake triggering factor.
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