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Laplace–fourier-domain full waveform inversion of deep-sea seismic data acquired with limited offsets
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Cho, Yongchae | - |
dc.contributor.author | Ha, Wansoo | - |
dc.contributor.author | Kim, Youngseo | - |
dc.contributor.author | Shin, Changsoo | - |
dc.contributor.author | Singh, Satish | - |
dc.contributor.author | Park, Eunjin | - |
dc.creator | 신창수 | - |
dc.date.accessioned | 2019-04-24T08:32:05Z | - |
dc.date.available | 2020-04-05T08:32:05Z | - |
dc.date.created | 2018-08-23 | - |
dc.date.created | 2018-08-23 | - |
dc.date.issued | 2016-03 | - |
dc.identifier.citation | Pure and Applied Geophysics, Vol.173 No.3, pp.749-773 | - |
dc.identifier.issn | 0033-4553 | - |
dc.identifier.uri | https://hdl.handle.net/10371/148068 | - |
dc.description.abstract | Laplace-Fourier-domain full waveform inversion is considered one of the most reliable schemes to alleviate the drawbacks of conventional frequency-domain inversion, such as local minima. Using a damped wavefield, we can reduce the possibility of converging to local minima and produce an accurate long-wavelength velocity model. Then, we can obtain final inversion results using high-frequency components and low damping coefficients. However, the imaging area is limited because this scheme uses a damped wavefield that makes the magnitudes of the gradient and residual small in deep areas. Generally, the imaging depth of Laplace-Fourier-domain full waveform inversion is half the streamer length. Thus, dealing with seismic data in the deep-sea layer is difficult. The deep-sea layer reduces the amplitude of signals and acts as an obstacle for computing an exact gradient image. To reduce the water layer's effect, we extrapolated the wavefield with a downward continuation and performed refraction tomography. Then, we performed Laplace-Fourier-domain full waveform inversion using the refraction tomography results as an initial model. After obtaining a final velocity model, we verified the inversion results using Kirchhoff migration. We presented common image gathers and a synthetic seismogram of Sumatra field data to prove the reliability of the velocity model obtained by Laplace-Fourier-domain full waveform inversion. Through the test, we concluded that Laplace-Fourier-domain full waveform inversion with refraction tomography of the downward-continued wavefield recovers the subsurface structures located at depth despite a relatively short streamer length compared to the water depth. | - |
dc.language | 영어 | - |
dc.language.iso | en | en |
dc.publisher | Birkhauser Verlag | - |
dc.title | Laplace–fourier-domain full waveform inversion of deep-sea seismic data acquired with limited offsets | - |
dc.type | Article | - |
dc.identifier.doi | 10.1007/s00024-015-1125-7 | - |
dc.citation.journaltitle | Pure and Applied Geophysics | - |
dc.identifier.wosid | 000372305100003 | - |
dc.identifier.scopusid | 2-s2.0-84961266676 | - |
dc.description.srnd | OAIID:RECH_ACHV_DSTSH_NO:T201720865 | - |
dc.description.srnd | RECH_ACHV_FG:RR00200001 | - |
dc.description.srnd | ADJUST_YN: | - |
dc.description.srnd | EMP_ID:A002505 | - |
dc.description.srnd | CITE_RATE:1.591 | - |
dc.description.srnd | DEPT_NM:에너지시스템공학부 | - |
dc.description.srnd | EMAIL:cssmodel@snu.ac.kr | - |
dc.description.srnd | SCOPUS_YN:Y | - |
dc.citation.endpage | 773 | - |
dc.citation.number | 3 | - |
dc.citation.startpage | 749 | - |
dc.citation.volume | 173 | - |
dc.description.isOpenAccess | N | - |
dc.contributor.affiliatedAuthor | Cho, Yongchae | - |
dc.contributor.affiliatedAuthor | Shin, Changsoo | - |
dc.identifier.srnd | T201720865 | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | SUMATRA-ANDAMAN EARTHQUAKE | - |
dc.subject.keywordPlus | TRAVEL-TIME | - |
dc.subject.keywordPlus | FREQUENCY | - |
dc.subject.keywordPlus | VELOCITY | - |
dc.subject.keywordPlus | TOMOGRAPHY | - |
dc.subject.keywordAuthor | Full waveform inversion | - |
dc.subject.keywordAuthor | Laplace-Fourier domain | - |
dc.subject.keywordAuthor | downward continuation | - |
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