Frequency-domain acoustic full waveform inversion with an embedded boundary method for irregular topography SCIE SCOPUS
DC Field | Value | Language |
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dc.contributor.author | Park, Yun Hui | - |
dc.contributor.author | Hwang, Jongha | - |
dc.date.accessioned | 2022-09-26T01:51:53Z | - |
dc.date.available | 2022-09-26T01:51:53Z | - |
dc.date.created | 2022-08-31 | - |
dc.date.issued | 2023-05 | - |
dc.identifier.issn | 0812-3985 | - |
dc.identifier.uri | https://sciwatch.kiost.ac.kr/handle/2020.kiost/43181 | - |
dc.description.abstract | In the implementation of full waveform inversion (FWI) to identify subsurface velocity distributions with land seismic data, which are often acquired in regions with irregular topography, wave equation-based modelling requires caution. In particular, when using the finite difference method (FDM), unwanted scattered waves are generated because irregular surfaces crossing a rectangular grid are discretized via a staircase approximation; hence, if the problems caused by this staircase approximation are disregarded, FDM-based FWI may fail due to the presence of undesirable wavefields. To resolve this problem, this study develops a 2D frequency-domain acoustic FWI technique using a 9-point FDM-based modelling scheme that includes an embedded boundary method (EBM). This study suggests a workflow for the whole EBM-based FWI process from the calculation of coefficients for the EBM-based 9-point FDM modelling to applying it to FWI for proper velocity updates. In numerical examples, using velocity models with a tilted surface and an arbitrarily fluctuating surface, we synthesize seismic data and verify the accuracy of EBM-based 9-point FDM modelling and its superiority over the conventional FDM by comparing it with wavefields derived from the spectral element method. Then, we show that our EBM-based FWI is able to estimate subsurface velocity distributions even though the model has irregular topography, which spoils the result of the conventional FWI. | - |
dc.description.uri | 1 | - |
dc.language | English | - |
dc.publisher | Consultants Bureau | - |
dc.title | Frequency-domain acoustic full waveform inversion with an embedded boundary method for irregular topography | - |
dc.type | Article | - |
dc.citation.endPage | 252 | - |
dc.citation.startPage | 241 | - |
dc.citation.title | Exploration Geophysics | - |
dc.citation.volume | 54 | - |
dc.citation.number | 3 | - |
dc.contributor.alternativeName | 박윤희 | - |
dc.contributor.alternativeName | 황종하 | - |
dc.identifier.bibliographicCitation | Exploration Geophysics, v.54, no.3, pp.241 - 252 | - |
dc.identifier.doi | 10.1080/08123985.2022.2117603 | - |
dc.identifier.scopusid | 2-s2.0-85137048295 | - |
dc.identifier.wosid | 000847762600001 | - |
dc.type.docType | Article; Early Access | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.subject.keywordPlus | SPECTRAL ELEMENT METHOD | - |
dc.subject.keywordPlus | FINITE-DIFFERENCE | - |
dc.subject.keywordPlus | PART 1 | - |
dc.subject.keywordPlus | EQUATION | - |
dc.subject.keywordAuthor | Embedded boundary method | - |
dc.subject.keywordAuthor | full waveform inversion | - |
dc.subject.keywordAuthor | irregular topography | - |
dc.subject.keywordAuthor | complex surface | - |
dc.subject.keywordAuthor | Lagrangian interpolation | - |
dc.relation.journalWebOfScienceCategory | Geochemistry & Geophysics | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Geochemistry & Geophysics | - |