Efficient frequency-domain reflection-based full waveform inversion using wavefield separation

DC Field Value Language
dc.contributor.author Jun, Hyunggu -
dc.date.accessioned 2020-07-15T06:51:44Z -
dc.date.available 2020-07-15T06:51:44Z -
dc.date.created 2020-06-03 -
dc.date.issued 2019-10-16 -
dc.identifier.uri https://sciwatch.kiost.ac.kr/handle/2020.kiost/22250 -
dc.description.abstract Full waveform inversion (FWI) is a suitable algorithm to invert the subsurface velocity with high accuracy. The low frequency components and long offset seismic data are necessary for the FWI to invert the long wavelength velocity. To invert the long wavelength velocity from the reflection-dominant short offset seismic data, the reflection-based full waveform inversion (RFWI) which decomposed the gradient of the FWI into high and low wavenumber components was introduced. However, the conventional RFWI still contained the high wavenumber components which were generated between the primary wavefield and the scattered wavefield. Moreover, the true amplitude migration which needed additional computation was necessary. In this study, the new frequency-domain RFWI algorithm is introduced to overcome the drawbacks of the conventional RFWI. The new RFWI algorithm uses the up/down-going wavefield separation to remove the high wavenumber component and the two-step approach to enhance the computational efficiency. The effectiveness of the proposed algorithm is verified by the synthetic numerical test using short-offset Marmousi seismic data. © 2018 SEG. -
dc.description.uri 1 -
dc.language English -
dc.publisher Society of Exploration Geophysicists -
dc.relation.isPartOf 2018 SEG International Exposition and Annual Meeting, SEG 2018 -
dc.title Efficient frequency-domain reflection-based full waveform inversion using wavefield separation -
dc.type Conference -
dc.citation.conferenceDate 2018-10-14 -
dc.citation.conferencePlace US -
dc.citation.endPage 1122 -
dc.citation.startPage 1118 -
dc.citation.title 88th Society of Exploration Geophysicists International Exposition and Annual Meeting -
dc.contributor.alternativeName 전형구 -
dc.identifier.bibliographicCitation 88th Society of Exploration Geophysicists International Exposition and Annual Meeting, pp.1118 - 1122 -
dc.identifier.scopusid 2-s2.0-85059410871 -
dc.description.journalClass 1 -
Appears in Collections:
Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse