A stable TTI reverse time migration and its implementation

doi:10.1190/1.3554411

	A stable TTI reverse time migration and its implementation
	Zhang, Yu 1; Zhang, Houzhu 1; Zhang, Guanquan 2
刊名	GEOPHYSICS
	2011-05-01
卷号	76 期号:3 页码:WA3-WA11
ISSN号	0016-8033
DOI	10.1190/1.3554411
英文摘要	Modeling and reverse time migration based on the tilted transverse isotropic (TTI) acoustic wave equation suffers from instability in media of general inhomogeniety, especially in areas where the tilt abruptly changes. We develop a stable TTI acoustic wave equation implementation based on the original elastic anisotropic wave equation. We, specifically, derive a vertical transversely isotropic wave system of equations that is equivalent to their elastic counterpart and introduce the self-adjoint differential operators in rotated coordinates to stabilize the TTI acoustic wave equations. Compared to the conventional formulations, the new system of equations does not add numerical complexity; a stable solution can be found by either a pseudospectral method or a high-order explicit finite difference scheme. We demonstrate by examples that our method provides stable and high-quality TTI reverse time migration images.
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SOC EXPLORATION GEOPHYSICISTS
WOS记录号	WOS:000293522500052
内容类型	期刊论文
源URL	[http://ir.amss.ac.cn/handle/2S8OKBNM/12645]
专题	中国科学院数学与系统科学研究院
通讯作者	Zhang, Yu
作者单位	1.CGGVeritas, Houston, TX USA 2.Chinese Acad Sci, Acad Math & Syst Sci, Inst Computat Math & Sci Engn Comp, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yu,Zhang, Houzhu,Zhang, Guanquan. A stable TTI reverse time migration and its implementation[J]. GEOPHYSICS,2011,76(3):WA3-WA11.
APA	Zhang, Yu,Zhang, Houzhu,&Zhang, Guanquan.(2011).A stable TTI reverse time migration and its implementation.GEOPHYSICS,76(3),WA3-WA11.
MLA	Zhang, Yu,et al."A stable TTI reverse time migration and its implementation".GEOPHYSICS 76.3(2011):WA3-WA11.