Simulation of Near-Fault Strong Ground Motion in
the Beijing Region
佚名
【期刊名称】《中国地震研究（英文版）》 【年(卷),期】2007(021)003
【摘要】On the basis of previous study of the 1679 Sanhe-Pinggu ( M8. 0) earthquake, the biggest event in history ever recorded in Beijing and its adjacent area, we made a 3-D strong ground motion simulation utilizing the staggered-grid finite differences method to study the distributions of peak ground velocity with different earthquake source models in the Beijing region. In the paper, earthquake source models and a transmission medium velocity model are established and the corresponding parameters are given in accordance to the results from a related previous study. Then, using a three-dimensional finite difference computing program of near-fault strong ground motion developed by Graves, the peak ground velocity caused by a destructive earthquake in the Beijing area is simulated. In our computation model, the earthquake source is 3km in depth, and a total number of 21,679 observation points on the ground surface are figured out. The transmission medium velocity model is composed of four stratums which are the Quaternary deposit, the upper crust, the upper part of the middle crust and the lower part of the middle crust. With the minimum grid spacing of
Simulation of Near-Fault Strong Ground Motion in the Beijing Region
