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).
- Chen S, Wang QH, Wang QS, Wang Y, Lu HY, Xu WM, Shi L and Guo FY (2014), “The 3D Density Structure and Gravity Change of Ludian M(s)6.5 Yunnan Epicenter and Surrounding Regions,” Chinese Journal of Geophysics-Chinese Edition, 57(9): 3080–3090.Google Scholar
- Liu Chengli, Zheng Yong, Xiong Xiong, Fu Rui, Shan Bin and Diao Faqi (2014), “Rupture Process of M(s)6.5 Ludian Earthquake Constrained by Regional Broadband Seismograms,” Chinese Journal of Geophysics-Chinese Edition, 57(9): 3028–3037. (in Chinese)Google Scholar
- Piromallo C and Morelli A (2003), “P Wave Tomography of the Mantle under the Alpine-Mediterranean Area,” Journal of Geophysical Research-Solid Earth, 108(B2).Google Scholar
- Suss MP and Shaw JH (2003), “P Wave Seismic Velocity Structure Derived from Sonic Logs and Industry Reflection Data in the Los Angeles Basin, California,” Journal of Geophysical Research-Solid Earth, 108(B3).Google Scholar
- Xu Tao, Zhang Minghui, Tian Xiaobo, Zheng Yong, Bai Zhiming, Wu Chenglong, Zhang Zhongjie and Teng Jiwen (2014), “Upper Crustal Velocity of Lijiang-Qingzhen Profile and Its Relationship with the Seismogenic Environment of the M(s)6.5 Ludian Earthquake,” Chinese Journal of Geophysics-Chinese Edition, 57(9): 3069–3079. (in Chinese)Google Scholar
- Xu Tao, Zhang Zhongjie, Liu Baofeng, Chen Yun, Zhang Minghui, Tian Xiaobo, Xu Yigang and Teng Jiwen (2015), “Crustal Velocity Structure in the Emeishan Large Igneous Province and Evidence of the Permian Mantle Plume Activity,” Science China-E arth Sciences, 58(7): 1133–1147. (in Chinese)CrossRefGoogle Scholar