Wave equation depth migration with optimum split-step Fourier method in 3-D VTI media

	Wave equation depth migration with optimum split-step Fourier method in 3-D VTI media
	Liu, LN; Gao, HW; Liu, H; Zhang, JF
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2005-03-01
卷号	48 期号:2 页码:406-414
关键词	Wave Equation Phase-shift Operators 3-d Vti Optimum Split-step Fourier Method
ISSN号	0001-5733
文献子类	Article
英文摘要	A Dispersion equation for the transversely isotropic media with a vertical symmetry axis (VTI) is derived from the phase velocity expressed in terms of Thomsen parameters. Based on the vertical wavenumber solved from the dispersion equation, the optimum split-step Fourier 3-D wave equation depth migration method in isotropic media is extended to 3-D VTI media. The macro velocity model used for describing VTI media is consistent with current velocity estimation method, and can simultaneously accommodate the isotropy, weak anisotropy and strong anisotropy. Involving higher order correction terms added to the phase-shift method, the proposed algorithm can model wider-angle wavefield with a high accuracy in the presence of severe lateral velocity variations in 3-D VTI media. The accuracy of the proposed algorithm is demonstrated by 2-D and 3-D migration impulse responses.
WOS关键词	TRANSVERSELY ISOTROPIC MEDIA ; EXPLICIT OPERATORS ; ANISOTROPY
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000227972500025
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/64849]
专题	中国科学院地质与地球物理研究所
通讯作者	Liu, LN
作者单位	Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Liu, LN,Gao, HW,Liu, H,et al. Wave equation depth migration with optimum split-step Fourier method in 3-D VTI media[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2005,48(2):406-414.
APA	Liu, LN,Gao, HW,Liu, H,&Zhang, JF.(2005).Wave equation depth migration with optimum split-step Fourier method in 3-D VTI media.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,48(2),406-414.
MLA	Liu, LN,et al."Wave equation depth migration with optimum split-step Fourier method in 3-D VTI media".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 48.2(2005):406-414.