IGGCAS OpenIR  > 油气资源研究院重点实验室
Normalized nonzero-lag crosscorrelation elastic full-waveform inversion
Zhang, Zhendong1; Alkhalifah, Tariq1; Wu, Zedong1; Liu, Yike2; He, Bin2; Oh, Juwon3
2019
Source PublicationGEOPHYSICS
ISSN0016-8033
Volume84Issue:1Pages:R1-R10
AbstractFull-waveform inversion (FWI) is an attractive technique due to its ability to build high-resolution velocity models. Conventional amplitude-matching FWI approaches remain challenging because the simplified computational physics used does not fully represent all wave phenomena in the earth. Because the earth is attenuating, a sample-by-sample fitting of the amplitude may not be feasible in practice. We have developed a normalized nonzero-lag crosscorrelataion-based elastic FWI algorithm to maximize the similarity of the calculated and observed data. We use the first-order elastic-wave equation to simulate the propagation of seismic waves in the earth. Our proposed objective function emphasizes the matching of the phases of the events in the calculated and observed data, and thus, it is more immune to inaccuracies in the initial model and the difference between the true and modeled physics. The normalization term can compensate the energy loss in the far offsets because of geometric spreading and avoid a bias in estimation toward extreme values in the observed data. We develop a polynomial-type weighting function and evaluate an approach to determine the optimal time lag. We use a synthetic elastic Marmousi model and the BigSky field data set to verify the effectiveness of the proposed method. To suppress the short-wavelength artifacts in the estimated S-wave velocity and noise in the field data, we apply a Laplacian regularization and a total variation constraint on the synthetic and field data examples, respectively.
DOI10.1190/GEO2018-0082.1
Funding OrganizationKAUST ; KAUST ; KAUST ; KAUST ; KAUST ; KAUST ; KAUST ; KAUST
WOS KeywordMISFIT ; MEDIA
Language英语
Funding ProjectKAUST
Funding OrganizationKAUST ; KAUST ; KAUST ; KAUST ; KAUST ; KAUST ; KAUST ; KAUST
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000457601800032
PublisherSOC EXPLORATION GEOPHYSICISTS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/90514
Collection油气资源研究院重点实验室
Corresponding AuthorZhang, Zhendong
Affiliation1.King Abdullah Univ Sci & Technol, Dept Phys Sci & Engn, Thuwal 239556900, Saudi Arabia
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
3.Chonbuk Natl Univ, Dept Resources & Energy Engn, 567 Baekje Daero, Jeonju Si 54896, Jeollabuk Do, South Korea
Recommended Citation
GB/T 7714
Zhang, Zhendong,Alkhalifah, Tariq,Wu, Zedong,et al. Normalized nonzero-lag crosscorrelation elastic full-waveform inversion[J]. GEOPHYSICS,2019,84(1):R1-R10.
APA Zhang, Zhendong,Alkhalifah, Tariq,Wu, Zedong,Liu, Yike,He, Bin,&Oh, Juwon.(2019).Normalized nonzero-lag crosscorrelation elastic full-waveform inversion.GEOPHYSICS,84(1),R1-R10.
MLA Zhang, Zhendong,et al."Normalized nonzero-lag crosscorrelation elastic full-waveform inversion".GEOPHYSICS 84.1(2019):R1-R10.
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