Error analysis of the converted wave deduced by equivalent velocity assumption

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	Error analysis of the converted wave deduced by equivalent velocity assumption
	Wang Wei(王伟) ; Wang Yun ; Yin Junjie ; Gao Xing
刊名	Exploration Geophysics
	2012
卷号	43 期号:3 页码:162-170
关键词	Velocity Error analysis Seismic waves
ISSN号	08123985
通讯作者	Wang, Y
英文摘要	Based on the assumption of the equivalent velocity and offset, the converted wave travel-time equation, which has a double square root due to the asymmetric ray-path of the down-going P-wave and the up-coming S-wave, can be transformed into a single square root equation if the common scatterpoint (CSP) gathers are binned. This method simplifies the equation and decreases the errors of converted wave migration transferred by P-wave velocity error, compared to the equivalent offset method (EOM) migration proposed by Bancroft, Geiger and Foltinek . In this paper, the errors caused by the introduction of equivalent velocity for the PS-wave are analysed in detail. The discrete errors and effects introduced by discretization of the equivalent offset are presented, and finally the conditions for applying CSP gathers for PS-wave processing under the control of reasonable error limits are derived. 2012 ASEG.
收录类别	SCI
资助信息	Key Laboratory of Geo-detection (China University of Geosciences, Beijing) GDL0803;Natural Science Foundation of China 41130419 41074041;Ministry of Education;2011ZX05035-001-006HZ;2011ZX05035-002-003HZ;2011ZX05008-006-22;2011ZX05049-01-02;2011ZX05019-003
公开日期	2012-11-23
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/27690]
专题	地理科学与资源研究所_研究生部
推荐引用方式 GB/T 7714	Wang Wei,Wang Yun,Yin Junjie,et al. Error analysis of the converted wave deduced by equivalent velocity assumption[J]. Exploration Geophysics,2012,43(3):162-170.
APA	Wang Wei,Wang Yun,Yin Junjie,&Gao Xing.(2012).Error analysis of the converted wave deduced by equivalent velocity assumption.Exploration Geophysics,43(3),162-170.
MLA	Wang Wei,et al."Error analysis of the converted wave deduced by equivalent velocity assumption".Exploration Geophysics 43.3(2012):162-170.