Multi-Frequency Contrast Source Inversion for Reflection Seismic Data  

作　　者：Shoudong Wang Ru-Shan Wu 

机构地区：[1]State Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum(Beijing),Beijing 102249,P.R.China [2]National Engineering Laboratory of Offshore Oil Exploration,China University of Petroleum(Beijing),Beijing 102249,P.R.China [3]Modeling and Imaging Laboratory,Earth and Planetary Sciences,University of California,Santa Cruz,CA 95064,USA

出　　处：《Communications in Computational Physics》2020年第6期207-227,共21页计算物理通讯（英文）

基　　金：supported by the National Science and Technology of Major Projects of China(grant no.2016ZX05024-001-004);the WTOPI Research Consortium of Modeling and Imaging Laboratory,University of California Santa Cruz,US。

摘　　要：In the contrast source inversion(CSI)method,the contrast sources(equiva-lent scattering sources)and the contrast(parameter perturbation)are iteratively recon-structed by an alternating optimization scheme.Traditionally integral equation CSI method is formulated for transmission tomography using analytic Green’s function in homogeneous background.To extend the method to the case of reflection seismology,in this paper,we use WKBJ method to compute the Green’s function of depth dependent background media and the solving method of equations to initialize the contrast source of different frequencies,resulting in an efficient method to invert multi-frequency reflection seismic data–multi-frequency contrast source inversion method(MFCSI).Numerical results for the Marmousi model show that MFCSI method can obtain good results even when low frequency data are missing,in which case the conventional FWI fails.

关 键 词：Contrast source inversion full waveform inversion frequency domain inversion integral equation CSI 

分 类 号：P31[天文地球—固体地球物理学]