Simulation of the Seismic Response of 2D Sedimentary Basin with Hybrid PSM/FDM Method

Abstract:

Abstract: In this paper, we simulated two-dimension numerical on the strong ground motion in Lanzhou basin through the hybrid scheme based on the pseudospectral method (PSM) and finite difference method (FDM). We base on a focal of 20 km deep and a profile of 5 layers is used as model to analyze the site response and the peak displacement of strong ground motion. The results show that the hybrid PSM/FDM method for seismic wavefield simulation combines with advantages of PSM and FDM and makes up for the disadvantage of them, so this method can process well the calculation of the discontinuous medium surface, then the calculation accuracy is similar to PSM. Through the wavefield simulation it is known that the peak ground displacement (PGD) of the vertical is larger and the influence of surface wave at the basin edge is more obvious than the horizontal.

• Periodical: Advanced Materials Research (Volumes 594-597)
• Pages: 1840-1848
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.594-597.1840
• Online since: November 2012
• Authors: Wu Jian Yan, Yan Bin Wang, Yu Cheng Shi
• Keywords: Hybrid PSM/FDM Method, Lanzhou Basin, Peak Ground Displace (PGD), Profile, Wavefield Simulation

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