Surface motion of a semi-cylindrical hill for incident plane SV waves: Analytical solution  

作　　者：梁建文 张彦帅 Vincent W Lee 

机构地区：[1]Tianjin University, Tianjin 300072, China [2]University of Southern California, Los Angeles, CA 90089-2531, USA

出　　处：《Acta Seismologica Sinica(English Edition)》2006年第3期251-263,共13页

基　　金：National Natural Science Foundation of China (50378063) and Program for New Century Excellent Talents in University.

摘　　要：An analytical solution for surface motion of a semi-cylindrical hill for incident plane SV waves was derived by using the wave function expansion method and the auxiliary function technique, and convergence of the solution and accuracy of truncation were verified. The effect of incident frequency and angle as well as hill width on the surface motion of the hill was discussed by numerical examples. It was shown that, a hill greatly amplifies incident plane SV waves, and the maximal amplification may reach 4 times of that for free-field response; and for incident waves of low frequency, the maximal displacement amplitudes emerge mostly at the half-space, however, for incident waves of high frequency, the maximal displacement amplitudes appear mostly at the hill.An analytical solution for surface motion of a semi-cylindrical hill for incident plane SV waves was derived by using the wave function expansion method and the auxiliary function technique, and convergence of the solution and accuracy of truncation were verified. The effect of incident frequency and angle as well as hill width on the surface motion of the hill was discussed by numerical examples. It was shown that, a hill greatly amplifies incident plane SV waves, and the maximal amplification may reach 4 times of that for free-field response; and for incident waves of low frequency, the maximal displacement amplitudes emerge mostly at the half-space, however, for incident waves of high frequency, the maximal displacement amplitudes appear mostly at the hill.

关 键 词：HILL plane SV waves SCATTERING surface motion analytical solution 

分 类 号：P315.3[天文地球—地震学]