Combined Inversion of Early Arrival P-wave and Rayleigh Wave with Cross-gradient Constraint

摘要：

　　We present a combined early arrival P-wave and Rayleigh wave inversion strategy that uses the cross-gradient between the P-velocity and S-velocity as a regularization term.First, the P-velocity model is inverted by the early arrival full wave inversion (FWI) method.Then the magnitude spectra of the surface waves in the frequency-wavenumber domain are inverted for the S-velocity model with a cross-gradient constraint.This constraint regularization insists that the S-velocity gradient is closely parallel to that of the P-velocity gradient.Results show that cross-gradient regularization provides a significant reduction in artifacts in the S-velocity tomogram.

关键词： combined inversion rayleigh wave

作者: Lei Fu Sixin Liu

作者单位: College of Geo-exploration Science and Technology Jilin University Changchun, China

会议类型: 国际会议

会议名称: The 7th International Conference on Environmental and Engineering Geophysics & Summit Forum of Chinese Academy of Engineering on Engineering Science and Technology (ICEEG 2016)(第七届环境与工程地球物理学国际会议)

会议地点: 北京

会议语种:英文

页码: 310-313

在线出版日期: 2016-06-27（万方平台首次上网日期，不代表论文的发表时间）