Wave equation depth migration with symmetric non-stationary phase shift method in axi-symmetrical anisotropic media

	Wave equation depth migration with symmetric non-stationary phase shift method in axi-symmetrical anisotropic media
	Liu Li-Nong ; Ghen Xiao-Hong ; Zhang Jian-Feng ; Liu Hong
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2007
卷号	50 期号:1 页码:277-284
关键词	wave equation anisotropic media phase-shift operators symmetric non-stationary phase shift extrapolation operator
ISSN号	0001-5733
文献子类	Article
英文摘要	A 3-D dispersion equation for the transversely isotropic media with a tilted symmetry axis is derived from the qP wave phase velocity expression. The anisotropic phase shift operator can be obtained with the vertical wavenumber, which is analytically solved from the dispersion equation. Then the symmetric nonstationary phase shift wave equation depth migration method in isotropic media is extended to anisotropic media. The macro velocity model used for describing anisotropic media is consistent with the current velocity estimation method and can simultaneously accommodate the isotropy, weak anisotropy and strong anisotropy. The symmetric non-stationary phase shift extrapolation operator can accommodate transverse variation of velocity as well as the anisotropic parameter. Although a 2-D VTI example is present in the paper, the proposed algorithm can be used in 3-D TI media as well.
WOS关键词	TRANSVERSELY ISOTROPIC MEDIA ; STEP FOURIER METHOD ; VELOCITY ANALYSIS ; TTI MEDIA ; VTI MEDIA
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000244338300034
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/68522]
专题	中国科学院地质与地球物理研究所
通讯作者	Liu Li-Nong
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.China Univ Petr, Beijing 102249, Peoples R China
推荐引用方式 GB/T 7714	Liu Li-Nong,Ghen Xiao-Hong,Zhang Jian-Feng,et al. Wave equation depth migration with symmetric non-stationary phase shift method in axi-symmetrical anisotropic media[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2007,50(1):277-284.
APA	Liu Li-Nong,Ghen Xiao-Hong,Zhang Jian-Feng,&Liu Hong.(2007).Wave equation depth migration with symmetric non-stationary phase shift method in axi-symmetrical anisotropic media.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,50(1),277-284.
MLA	Liu Li-Nong,et al."Wave equation depth migration with symmetric non-stationary phase shift method in axi-symmetrical anisotropic media".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 50.1(2007):277-284.