ACOUSTIC-ELASTIC COUPLED FULL-WAVEFORM INVERSION IN THE LAPLACE DOMAIN WITH SCALED GRADIENT FOR IMPROVED DENSITY RECOVERY SCIE SCOPUS

DC Field Value Language
dc.contributor.author Kang, Seung-Goo -
dc.contributor.author Jang, Ugeun -
dc.contributor.author Kim, Han-Joon -
dc.contributor.author Jou, Hyeong-Tae -
dc.contributor.author Shin, Changsoo -
dc.contributor.author Hong, Jong Kuk -
dc.contributor.author Jin, Young Keun -
dc.date.accessioned 2020-04-16T08:40:14Z -
dc.date.available 2020-04-16T08:40:14Z -
dc.date.created 2020-01-28 -
dc.date.issued 2018-10 -
dc.identifier.issn 0963-0651 -
dc.identifier.uri https://sciwatch.kiost.ac.kr/handle/2020.kiost/830 -
dc.description.abstract Acoustic-clastic coupled full-waveform inversion in the Laplace domain is well suited for recovering P- and S-wave velocity (V-p and V-s, respectively), and density from marine seismic data because it can simulate waves that are generated in the fluid (sea water) and propagate into the solid (seafloor). However, density is not recovered as reliably as V-p and V-s. In this study, we show that the density recovery procedure using full-waveform inversion for acoustic-elastic coupled media can be improved by scaling the gradient for the steepest descent operation. Gradient scaling is a heuristic approach that multiplies the gradient by the square of the gradient summed in the depth direction. We found that this scaling scheme resulted in more accurate density as well as attenuated numerical artefacts. To validate the scaling scheme, we illustrate both synthetic and real data examples. -
dc.description.uri 1 -
dc.language English -
dc.publisher GEOPHYSICAL PRESS -
dc.subject FIELD -
dc.title ACOUSTIC-ELASTIC COUPLED FULL-WAVEFORM INVERSION IN THE LAPLACE DOMAIN WITH SCALED GRADIENT FOR IMPROVED DENSITY RECOVERY -
dc.type Article -
dc.citation.endPage 504 -
dc.citation.startPage 487 -
dc.citation.title JOURNAL OF SEISMIC EXPLORATION -
dc.citation.volume 27 -
dc.citation.number 5 -
dc.identifier.bibliographicCitation JOURNAL OF SEISMIC EXPLORATION, v.27, no.5, pp.487 - 504 -
dc.identifier.scopusid 2-s2.0-85057474737 -
dc.identifier.wosid 000454943100005 -
dc.type.docType Article -
dc.description.journalClass 1 -
dc.subject.keywordPlus FIELD -
dc.subject.keywordAuthor Laplace domain -
dc.subject.keywordAuthor full-waveform inversion -
dc.subject.keywordAuthor density -
dc.subject.keywordAuthor gradient scaling -
dc.subject.keywordAuthor acoustic-elastic coupled wave equation -
dc.relation.journalWebOfScienceCategory Geochemistry & Geophysics -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.relation.journalResearchArea Geochemistry & Geophysics -
Appears in Collections:
Marine Environmental & Climate Research Division > Marine Active Fault Research Unit > 1. Journal Articles
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