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  4. 中国科学院页岩气与地质工程重点实验室
Regularized seismic velocity inversion based on inverse scattering theory

文献类型：期刊论文

作者Duan Xiao-Liang1; Wang Yi-Bo2; Yang Hui-Zhu1
刊名ACTA PHYSICA SINICA
出版日期2015-04-05
卷号64期号:7
关键词inversion seismic velocity inverse scattering regularization
DOI10.7498/aps.64.078901
文献子类Article
英文摘要In this paper, the regularized finite difference contrast source inversion algorithm based on inverse scattering theory is utilized to invert the seismic velocity distribution in the underground medium, and this algorithm is a waveform inversion method in frequency domain based on wave equation. Velocity distribution is updated iteratively by minimizing the cost function using the nonlinear conjugate gradient method. The geophysical inversion problem has the characters of ill-posedness and instability, we handle this problem by adding an additional regularization item based on total variation of inversion parameter, making the inversion problem become a well-posed problem, and the algorithm has the ability of anti-noise interference. In the inversion process we use the frequency-space domain 9-point difference propagation operator under PML absorption boundary condition. Compared with other inversion algorithm, the construction of forward modeling operator and other matrix factorization calculation process can be avoided in each iterative step because the background medium remains unchanged throughout the inversion process, this makes the algorithm more suitable for large-scale three-dimensional inversion. In addition, the MPI parallel computation is applied, by which the efficiency of inversion process is improved greatly. The two-dimensional CSEG model inversion results show that this algorithm can obtain high resolution seismic velocity reconstruction, and provide an accurate velocity information for seismic data processing and interpretation.
WOS关键词WAVE-FORM INVERSION ; DOMAIN ; ALGORITHMS ; EQUATIONS ; PROFILE ; MODEL ; BORN
WOS研究方向Physics
语种英语
WOS记录号WOS:000354058800053
资助机构National Natural Science Foundation of China(41174094) ; National Natural Science Foundation of China(41174094) ; National Science and Technology Major Project of the Ministry of Science and Technology of China(2011ZX05004-003) ; National Science and Technology Major Project of the Ministry of Science and Technology of China(2011ZX05004-003) ; National Natural Science Foundation of China(41174094) ; National Natural Science Foundation of China(41174094) ; National Science and Technology Major Project of the Ministry of Science and Technology of China(2011ZX05004-003) ; National Science and Technology Major Project of the Ministry of Science and Technology of China(2011ZX05004-003)
源URL[http://ir.iggcas.ac.cn/handle/132A11/62532]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
作者单位1.Tsinghua Univ, Sch Aerosp, Beijing 100084, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Duan Xiao-Liang,Wang Yi-Bo,Yang Hui-Zhu. Regularized seismic velocity inversion based on inverse scattering theory[J]. ACTA PHYSICA SINICA,2015,64(7).
APA Duan Xiao-Liang,Wang Yi-Bo,&Yang Hui-Zhu.(2015).Regularized seismic velocity inversion based on inverse scattering theory.ACTA PHYSICA SINICA,64(7).
MLA Duan Xiao-Liang,et al."Regularized seismic velocity inversion based on inverse scattering theory".ACTA PHYSICA SINICA 64.7(2015).

入库方式： OAI收割

来源：地质与地球物理研究所

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