IGGCAS OpenIR  > 油气资源研究院重点实验室
Elastic wave reverse time migration of decoupling equation based on improved cosine combined window function
Li WenDa1; Meng XiaoHong1; Liu Hong2; Wang Jian2; Sun Jun3; Gui Sheng2
2019-11-01
Source PublicationCHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN0001-5733
Volume62Issue:11Pages:4378-4392
AbstractThe reverse time migration (RTM) of elastic wave vector wave field can comprehensively use the vertical and horizontal field information to clearly image the underground space, and there is no angle limitation for the imaging medium, which can more clearly image the complex structure. The algorithm of solving the wave equation, which affect the accuracy and efficiency of imaging directly is the most important things for RTM. In this paper, the cosine combined window function (CCWF) used in harmonic analysis of power system was introduced. Then we obtained optimal finite-difference schemes based on improved CCWFs. Then a vector wave field separation algorithm based on decoupling equation is introduced to improve the imaging accuracy. Numerical tests show that the imaging accuracy of the reverse time migration based on the new algorithm are significantly improved.
KeywordFinite-difference Cosine-combined window Numerical dispersion Helmholtz algorithm Decoupling equation Elastic reverse time migration
DOI10.6038/cjg2019M0694
WOS KeywordGRID FINITE-DIFFERENCE ; PRESTACK ; PROPAGATION ; SCHEME
Language英语
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000495446500024
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95703
Collection油气资源研究院重点实验室
Corresponding AuthorMeng XiaoHong
Affiliation1.China Univ Geosci Beijing, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100049, Peoples R China
3.Tangshan Coll, Heibei Tangshan 063020, Peoples R China
Recommended Citation
GB/T 7714
Li WenDa,Meng XiaoHong,Liu Hong,et al. Elastic wave reverse time migration of decoupling equation based on improved cosine combined window function[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2019,62(11):4378-4392.
APA Li WenDa,Meng XiaoHong,Liu Hong,Wang Jian,Sun Jun,&Gui Sheng.(2019).Elastic wave reverse time migration of decoupling equation based on improved cosine combined window function.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,62(11),4378-4392.
MLA Li WenDa,et al."Elastic wave reverse time migration of decoupling equation based on improved cosine combined window function".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 62.11(2019):4378-4392.
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