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
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.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 -
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