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[1]JIA Xiaohui,CAO Xiuling,WANG Xiaoshan.Topographic Effect Related Seismic Simulation with the Stochastic Finite-fault Method[J].Journal of Seismological Research,2024,47(04):619-626.[doi:10.20015/j.cnki.ISSN1000-0666.2024.0019 ]

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Topographic Effect Related Seismic Simulation with the Stochastic Finite-fault Method

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: 47 Number of periods: 2024 04 Page number: 619-626 Column: Public date: 2024-08-20

Title:: Topographic Effect Related Seismic Simulation with the Stochastic Finite-fault Method

Author(s):: JIA Xiaohui¹; CAO Xiuling¹; WANG Xiaoshan²; (1.School of Urban Geology and Engineering,Hebei Technology Innovation Center for Intelligent Development and Control of Underground Built Environment,Hebei GEO University,Shijiazhuang 050031,Hebei,China)(2.Hebei Hongshan National Observatory on Thick Sediments and Seismic Hazards,Xingtai 054000,Hebei,China)

Keywords:: topographic effect; the Stochastic Finite-fault method; strong ground motion simulation; the Winter Olympic Games Site

CLC:: P315.91

DOI:: 10.20015/j.cnki.ISSN1000-0666.2024.0019

Abstract:: Based on the local site condition and topographical features of the mountain land,and according to the Stochastic Finite-fault method,we propose a method of illustrating the topographical effect with the site response effect including local site amplification and high frequency attenuation to estimate the topographical effect by simulating the strong ground motion.Taking Chongli,the Winter Olympic Games site in the typical mountainous topography in Zhangjiakou region as a study case,we calculate and analyze the strong ground motion field.The results show that:① The maximum value of PGA at Chongli site may reach 210 Gal.② The comparison of the mountain model with the flat-layer model shows that the flat-layer model ignoring the topographical effect will underestimate the validity of the strong ground motion in the mountain land.③ When using the Stochastic Finite-fault method,it is feasible to take into account the site combined effect consisting of the local site amplification factor and the high frequency attenuation factor to express the topographical effect.This method is superior in estimating the topographical effect intensity and computing the ground motion field.

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Last Update: 2024-08-20