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Amplitude-compensated Laplacian filtering of reverse time migration and its application
Yang, Renhu1; Chang, Xu2; Ling, Yun3; Feng, Ye E.4; Qu, Lijian1
2020-01-21
Source PublicationGEOPHYSICAL PROSPECTING
ISSN0016-8025
Pages8
AbstractReverse time migration is an advanced seismic migration imaging method. When the source wavefield and the receiver wavefield are cross-correlated, the cross-correlations of direct arrivals, backscattered waves and overturned waves will produce a lot of low-frequency noise, which will mask the final imaging results. Laplacian filtering, as a common method to suppress low-frequency noise, can adapt to any complex media, just adding a little computational cost. However, simple direct Laplacian filtering will destroy the characteristics of the useful signals. Therefore, the amplitude needs to be compensated before filtering when using the Laplacian filtering method. Zhang and Sun proposed an improved Laplacian filtering method and gave a simple calculation formula and explanation. This method can effectively suppress the low-frequency noise in reverse time migration while retaining the useful signal characteristics, but lacks detailed and strict mathematical derivation. Therefore, this paper gives a detailed and rigorous mathematical derivation of the amplitude-compensated Laplace filtering method from the point of view of amplitude-preserved filtering. The source wavelet is used instead of the source wavefield to compensate amplitude, just adding a little calculation cost. Finally, the amplitude-compensated Laplace filtering method is verified by two theoretical models and compared with the direct Laplacian filtering method.
KeywordAmplitude-compensated Laplacian filtering Low-frequency noise Reverse time migration
DOI10.1111/1365-2478.12881
Funding OrganizationFundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China
Language英语
Funding ProjectFundamental Research Funds for the Central Universities[ZY20180239] ; National Natural Science Foundation of China[41974156]
Funding OrganizationFundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000508221500001
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95897
Collection页岩气与地质工程院重点实验室
Corresponding AuthorYang, Renhu
Affiliation1.China Inst Disaster Prevent, Hebei Key Lab Earthquake Dynam, Sanhe, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China
3.China Natl Petr Corp, Bur Geophys Prospecting, Zhuozhou, Peoples R China
4.Tel Aviv Univ, Tel Aviv, Israel
Recommended Citation
GB/T 7714
Yang, Renhu,Chang, Xu,Ling, Yun,et al. Amplitude-compensated Laplacian filtering of reverse time migration and its application[J]. GEOPHYSICAL PROSPECTING,2020:8.
APA Yang, Renhu,Chang, Xu,Ling, Yun,Feng, Ye E.,&Qu, Lijian.(2020).Amplitude-compensated Laplacian filtering of reverse time migration and its application.GEOPHYSICAL PROSPECTING,8.
MLA Yang, Renhu,et al."Amplitude-compensated Laplacian filtering of reverse time migration and its application".GEOPHYSICAL PROSPECTING (2020):8.
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