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dc.contributor.authorSun, Bingbing
dc.contributor.authorAlkhalifah, Tariq Ali
dc.date.accessioned2019-02-24T08:36:32Z
dc.date.available2019-02-24T08:36:32Z
dc.date.issued2018-08-27
dc.identifier.citationSun B, Alkhalifah T (2018) The application of an optimal transport to a preconditioned data matching function for robust waveform inversion. SEG Technical Program Expanded Abstracts 2018. Available: http://dx.doi.org/10.1190/segam2018-2995285.1.
dc.identifier.doi10.1190/segam2018-2995285.1
dc.identifier.urihttp://hdl.handle.net/10754/631152
dc.description.abstractFull Waveform Inversion updates the subsurface model iteratively by minimizing a misfit function, which measures the difference between observed and predicted data. The conventional l norm misfit function is widely used as it provides a simple, sample by sample, high resolution misfit function. However it is susceptible to local minima if the low wavenum-ber components of the initial model are not accurate. A deconvolution of the predicted and observed data offers an extend space comparison, which is more global. The matching filter calculated from the deconvolution has energy focussed at zero lag, like a Dirac Delta function, when the predicted data matches the observed ones. We use the Wasserstein distance to measure the difference between the matching filter and a Dirac Delta function. Unlike data, the matching filter can be easily transformed to a distribution satisfying the requirement of optimal transport theory. Compared with the conventional normalized penalty applied to non-zero lag energy in the matching filter, the new misfit function is a metric and has solid mathematical foundation based on optimal transport theory. Both synthetic and real data examples verified the effectiveness of the proposed misfit function.
dc.description.sponsorshipWe thank KAUST for its support and the Shaheen super computing laboratory for the computational recourses . We acknowledge CGG for providing the real data.
dc.publisherSociety of Exploration Geophysicists
dc.relation.urlhttps://library.seg.org/doi/10.1190/segam2018-2995285.1
dc.rightsArchived with thanks to SEG Technical Program Expanded Abstracts 2018
dc.subjectfull-waveform inversion
dc.subjectinversion
dc.subjectdeconvolution
dc.titleThe application of an optimal transport to a preconditioned data matching function for robust 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.identifier.journalSEG Technical Program Expanded Abstracts 2018
dc.conference.date2018-10-14 to 2018-10-19
dc.conference.name88th Society of Exploration Geophysicists International Exposition and Annual Meeting, SEG 2018
dc.conference.locationAnaheim, CA, USA
dc.eprint.versionPublisher's Version/PDF
kaust.personSun, Bingbing
kaust.personAlkhalifah, Tariq Ali
refterms.dateFOA2019-02-24T08:56:06Z
dc.date.published-online2018-08-27
dc.date.published-print2018-08-27


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