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Error analysis of the converted wave deduced by equivalent velocity assumption
Wei Wang; Yun Wang; Junjie Yin; Xing Gao
2012
Source PublicationExploration Geophysics
Volume43Issue:3Pages:162-170
Abstract

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.

Subject Area矿床地球化学
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/352002/4798
Collection矿床地球化学国家重点实验室_矿床地球化学国家重点实验室_期刊论文
Recommended Citation
GB/T 7714
Wei Wang,Yun Wang,Junjie Yin,et al. Error analysis of the converted wave deduced by equivalent velocity assumption[J]. Exploration Geophysics,2012,43(3):162-170.
APA Wei Wang,Yun Wang,Junjie Yin,&Xing Gao.(2012).Error analysis of the converted wave deduced by equivalent velocity assumption.Exploration Geophysics,43(3),162-170.
MLA Wei Wang,et al."Error analysis of the converted wave deduced by equivalent velocity assumption".Exploration Geophysics 43.3(2012):162-170.
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