Velocity structure building and ground motion simulation of the 2014 Ludian Ms 6.5 Earthquake
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This study constructs a 3D velocity structure model of the Ludian region in the Yunnan province, southwestern China, and simulates ground motion propagation of the 2014 Ludian Ms 6.5 earthquake. It aims to construct the local velocity structure of the Ludian region in three dimensions and with high precision. The simulation, using the spectral element method, is validated by field data from the Ludian earthquake records. Thus, it demonstrates that the adopted key parameters, such as the seismic source mechanism, propagation medium and geographical features of the engineering site, are appropriated for the simulation. Meanwhile, the simulation generates the ground motion distribution of the study region with an earthquakeinduced landslide in Ludian earthquake.
Keywordswave propagation velocity structure data fusion Ludian earthquake landslide
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This research is financially supported by National Key Technology R&D Program of China (No. 2016YFB0201001); the National Natural Science Foundation of China (Grant Nos. 41274106, 51639006, 40974063 and 51479098). Our work is completed on the “Explorer 100” cluster system of Tsinghua National Laboratory for Information Science and Technology (Zhang et al., 2017).
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