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Degenerate migrators for imaging fault-related complex structures

文献类型：期刊论文

作者Fu Li-Yun; Sun Wei-Jia; Li Dong-Ping
刊名CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
出版日期2007-07-01
卷号50期号:4页码:1241-1250
关键词one-way Lippmann-Schwinger integral equation degenerate approximations degenerate migrators Fourier seismic migration fault-related complex geological structures
ISSN号0001-5733
文献子类Article
英文摘要Wide-angle parabolic approximations to wave equation usually lead to non-constant differential migrators with their coefficients varying with lateral velocity variations, and hence require a finite-difference numerical implementation. With degenerate approximations to the one-way Lippmann-Schwinger integral equation, we study a category of wide-angle degenerate migrators that permit the implementation of seismic migration using fast Fourier transforms alone. The computationally efficient degenerate migrators extend the split-step Fourier (SSF) method to steeper propagation angles in large-contrast media at the cost of one more Fourier transform for each extrapolation step. Advancing wavefields by the degenerate migrators is actually a linear Interpolation between two split-step terms in the wavenumber domain. When applied to image the subsalt dipping faults in the SEG/EAGE salt model and fault blocks/zones in real datasets, the seismic migration by degenerate migrators gives well positioned images for fault-related complex geological structures.
WOS关键词PIECEWISE HETEROGENEOUS MEDIA ; WAY WAVE-EQUATIONS ; PARABOLIC EQUATION ; FOURIER MIGRATION ; INTEGRAL-EQUATION ; APPROXIMATION ; EXTRAPOLATION ; INTERPOLATION ; PROPAGATORS
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000248343500034
出版者SCIENCE CHINA PRESS
源URL[http://ir.iggcas.ac.cn/handle/132A11/67526]  
专题中国科学院地质与地球物理研究所
通讯作者Fu Li-Yun
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Dagang Oilfield, PetroChina Co Ltd, Tianjin 300280, Peoples R China
推荐引用方式
GB/T 7714		 Fu Li-Yun,Sun Wei-Jia,Li Dong-Ping. Degenerate migrators for imaging fault-related complex structures[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2007,50(4):1241-1250.
APA Fu Li-Yun,Sun Wei-Jia,&Li Dong-Ping.(2007).Degenerate migrators for imaging fault-related complex structures.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,50(4),1241-1250.
MLA Fu Li-Yun,et al."Degenerate migrators for imaging fault-related complex structures".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 50.4(2007):1241-1250.

入库方式： OAI收割

来源：地质与地球物理研究所

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