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dc.contributor.authorChoi, Yun Seok
dc.contributor.authorAlkhalifah, Tariq Ali
dc.date.accessioned2020-08-19T12:35:53Z
dc.date.available2020-08-19T12:35:53Z
dc.date.issued2017-03-13
dc.identifier.citationChoi, Y., & Alkhalifah, T. (2016). An Optimized Correlation-based Full Waveform Inversion. 78th EAGE Conference and Exhibition 2016. doi:10.3997/2214-4609.201600642
dc.identifier.isbn9789462821859
dc.identifier.doi10.3997/2214-4609.201600642
dc.identifier.urihttp://hdl.handle.net/10754/664681
dc.description.abstractThe conventional correlation-based objective function for FWI has a limitation: the desired (accurate) solution is not exactly located at the global minimum (or maximum) since the auto-correlation of the observed wavefield has some energy at non-zero time-lags. We propose two optimized correlation-based objective functions incorporating the auto-correlation term. Including this term in the new objective functions as a reference for the cross-correlation to fit locates the desired solution at the global minimum (or maximum). We derive the gradient expressions of the new objective functions using the adjoint-state method, where only two modelling steps are needed to calculate the gradients. The numerical examples show that FWI based on the new objective functions generate good convergent results, whereas the conventional correlation-based FWI does not.
dc.publisherEAGE Publications
dc.relation.urlhttp://www.earthdoc.org/publication/publicationdetails/?publication=84888
dc.rightsArchived with thanks to EAGE Publications BV
dc.titleAn optimized correlation-based full waveform inversion
dc.typeConference Paper
dc.contributor.departmentEarth Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentSeismic Wave Analysis Group
dc.conference.date2016-05-30 to 2016-06-02
dc.conference.name78th EAGE Conference and Exhibition 2016: Efficient Use of Technology - Unlocking Potential
dc.conference.locationVienna, AUT
dc.eprint.versionPost-print
kaust.personChoi, Yun Seok
kaust.personAlkhalifah, Tariq Ali
dc.identifier.eid2-s2.0-85088757940


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