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[1]RONG Mian-shui,LI Xiao-jun,LU Yue-jun,et al.Effect of Viscoelastic Local Canyon on the Spectrum Property of Ground Motion[J].Journal of Seismological Research,2009,32(01):40-45.

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Effect of Viscoelastic Local Canyon on the Spectrum Property of Ground Motion

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: 32 Number of periods: 2009 01 Page number: 40-45 Column: Public date: 2009-01-23

Title:: Effect of Viscoelastic Local Canyon on the Spectrum Property of Ground Motion

Author(s):: RONG Mian-shui¹; LI Xiao-jun²; LU Yue-jun¹; YOU Hong-bin³; (1.Institute of Crustal Dynamics,CEA,Beijing 100085,China)(2.Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China)(3.China Earthquake Disaster Prevention Center,Beijing 100029,China)

Keywords:: explicit finite difference method; viscoelastic site; local canyon; topography effect

CLC:: P315.9

DOI:: -

Abstract:: We apply explicit finite difference method to analyze the topography effect of viscoelastic site.In order to test the method we have used in this paper,we introduce the development about this method and make a numerical experiment on scattering of SV waves for local canyon.Then we obtain the response of ground surface under the excitation of bell shape impulse.We study the influence of several factors including the characteristic size of canyon(ratio of depth to width),the angle of incidence of impulse wave and the medium damping on spectrum property of ground motion.For a shallow canyon,the characteristic size and the angle of incidence have great effect on spectrum property of ground motion,and the extent of effect is related to the frequency of basic excitation.The effect of angle of incidence is more distinct than that of charaeteristic size.

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Last Update: 2009-01-23