Sensitivities of Surface-wave Dispersion Curves due to High-velocity-layer Models

摘要：

　　High-frequency surface-wave inversion is increasingly applied to estimation of shear (S)-wave velocities for near-surface geological structures.Our study addresses sensitivities of multimode dispersion curves of Rayleigh and Love waves for earth models containing a high-velocity layer (HVL).We analyzed and discussed sensitivities of dispersion curves due to four HVL models.The results show that Rayleigh and Love wave phase velocities are insensitive to variations in S-wave velocities of an HVL and layers beneath the HVL.This characteristic can influence the inversion stability.Our results suggested that reducing the number of layers in the process of inversion.Joint inversion of multimode Love waves with Rayleigh waves would enhance the accuracy of S-wave profiles as well.

关键词： surface wave Rayleigh wave, Love wave sensitivity high-velocity layer (HVL) model

作者: Chao Shen Jianghai Xia

作者单位: Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan, PRC;Subsurface Imaging and Sensing Laboratory, China University of Geosciences, Wuhan, PRC

会议类型: 国际会议

会议名称: 第五届环境与工程地球物理国际会议(ICEEG 2012)

会议地点: 长沙

会议语种:英文

页码: 228-233

在线出版日期: 2012-06-15（万方平台首次上网日期，不代表论文的发表时间）