Frequency-domain elastic full waveform inversion using the new pseudo-Hessian matrix: Experience of elastic Marmousi-2 synthetic data SCIE SCOPUS
DC Field | Value | Language |
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dc.contributor.author | Choi, Yunseok | - |
dc.contributor.author | Min, Dong-Joo | - |
dc.contributor.author | Shin, Changsoo | - |
dc.date.accessioned | 2020-04-20T10:40:18Z | - |
dc.date.available | 2020-04-20T10:40:18Z | - |
dc.date.created | 2020-01-28 | - |
dc.date.issued | 2008-10-01 | - |
dc.identifier.issn | 0037-1106 | - |
dc.identifier.uri | https://sciwatch.kiost.ac.kr/handle/2020.kiost/4436 | - |
dc.description.abstract | A proper scaling method allows us to find better solutions in waveform inversion, and it can also provide better images in true-amplitude migration methods based on a least-squares method. For scaling the gradient of a misfit function, we define a new pseudo-Hessian matrix by combining the conventional pseudo-Hessian matrix with amplitude fields. Because the conventional pseudo-Hessian matrix is assumed to neglect the zero-lag autocorrelation terms of impulse responses in the approximate Hessian matrix of the Gauss-Newton method, it has certain limitations in scaling the gradient of a misfit function relative to the approximate Hessian matrix. To overcome these limitations, we introduce amplitude fields to the conventional pseudo-Hessian matrix, and the new pseudo-Hessian matrix is applied to the frequency-domain elastic full waveform inversion. This waveform inversion algorithm follows the conventional procedures of waveform inversion using the backpropagation algorithm. A conjugate-gradient method is employed to derive an optimized search direction, and a backpropagation algorithm is used to calculate the gradient of the misfit function. The source wavelet is also estimated simultaneously with elastic parameters. The new pseudo-Hessian matrix can be calculated without the extra computational costs required by the conventional pseudo-Hessian matrix, because the amplitude fields can be readily extracted from forward modeling. Synthetic experiments show that the new pseudo-Hessian matrix provides better results than the conventional pseudo-Hessian matrix, and thus, we believe that the new pseudo-Hessian matrix is an alternative to the approximate Hessian matrix of the Gauss-Newton method in waveform inversion. | - |
dc.description.uri | 1 | - |
dc.language | English | - |
dc.publisher | SEISMOLOGICAL SOC AMER | - |
dc.subject | PRESTACK DEPTH-MIGRATION | - |
dc.subject | FIELD INVERSION | - |
dc.subject | REFLECTION DATA | - |
dc.subject | GAUSS-NEWTON | - |
dc.title | Frequency-domain elastic full waveform inversion using the new pseudo-Hessian matrix: Experience of elastic Marmousi-2 synthetic data | - |
dc.type | Article | - |
dc.citation.endPage | 2415 | - |
dc.citation.startPage | 2402 | - |
dc.citation.title | BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA | - |
dc.citation.volume | 98 | - |
dc.citation.number | 5 | - |
dc.contributor.alternativeName | 최윤석 | - |
dc.identifier.bibliographicCitation | BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, v.98, no.5, pp.2402 - 2415 | - |
dc.identifier.doi | 10.1785/0120070179 | - |
dc.identifier.scopusid | 2-s2.0-54949156796 | - |
dc.identifier.wosid | 000259703700020 | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | PRESTACK DEPTH-MIGRATION | - |
dc.subject.keywordPlus | FIELD INVERSION | - |
dc.subject.keywordPlus | REFLECTION DATA | - |
dc.subject.keywordPlus | GAUSS-NEWTON | - |
dc.relation.journalWebOfScienceCategory | Geochemistry & Geophysics | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Geochemistry & Geophysics | - |