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《Progress in Geophysics》 2014-05
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Spectral element method in seismic ground motion simulation

LI Xiao-bo;BO Jing-shan;QI Wen-hao;WANG Yi-chen;RUAN Fan;Institute of Engineering Mechanics,China Earthquake Administration;Institute of Disaster Prevention;  
This paper firstly makes a detailed summary of the theory of spectral element method from elastic wave equation and the weak formulation,spatial discretization,element interpolation function and integral, global aggregate computation,time discretization and the precision and stability of the code.Then,it is also summary the application status of spectral element method in the area of seismic ground motion simulation.Finally,makes a simple analysis of the role of underlying convex bedrock terrain on ground motion.In general,the spectral element method combines the flexibility of a finite element method with the accuracy and convergence of a spectral method, which could greatly reduce the memory requirements and computation times of the numerical simulation.On the basis of considering the regional geological structure,local site conditions,media anisotropy and seismic wave propagation characteristics correctly,this method might be suitable for studying basin effect,terrain effect and abnormal intensity for establishing reasonable model.According to the present information,there is not much study on ground motion simulation of using the spectral element method in domestic,and it is not make a detailed analysis and summary about the theory of spectral element method.This paper not only has a great theoretical significance for promoting the application of the spectral element method in domestic,but also has a crucial reference value to carry out more comprehensive seismic ground motion simulation research work in the future.
【Fund】: 国家自然科学基金(41372335);; 中央高校基本科研业务专项资金(ZY20110102);; 地震行业科研专项(201008006)联合资助
【CateGory Index】: P315.8
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