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dc.contributor.authorAlkhalifah, Tariq Ali
dc.contributor.authorWu, Zedong
dc.date.accessioned2016-12-22T13:34:56Z
dc.date.available2016-12-22T13:34:56Z
dc.date.issued2016-09-21
dc.identifier.citationAlkhalifah T, Wu Z (2016) Multiscattering inversion for low-model wavenumbers. GEOPHYSICS 81: R417–R428. Available: http://dx.doi.org/10.1190/GEO2015-0650.1.
dc.identifier.issn0016-8033
dc.identifier.issn1942-2156
dc.identifier.doi10.1190/GEO2015-0650.1
dc.identifier.urihttp://hdl.handle.net/10754/622065
dc.description.abstractA successful full-waveform inversion implementation updates the low-wavenumber model components first for a proper description of the wavefield propagation and slowly adds the high wavenumber potentially scattering parts of the model. The low-wavenumber components can be extracted from the transmission parts of the recorded wavefield emanating directly from the source or the transmission parts from the single- or double-scattered wavefield computed from a predicted scatter field acting as secondary sources.We use a combined inversion of data modeled from the source and those corresponding to single and double scattering to update the velocity model and the component of the velocity (perturbation) responsible for the single and double scattering. The combined inversion helps us access most of the potential model wavenumber information that may be embedded in the data. A scattering-angle filter is used to divide the gradient of the combined inversion, so initially the high-wavenumber (low-scattering-angle) components of the gradient are directed to the perturbation model and the low-wavenumber (highscattering- angle) components are directed to the velocity model. As our background velocity matures, the scatteringangle divide is slowly lowered to allow for more of the higher wavenumbers to contribute the velocity model. Synthetic examples including the Marmousi model are used to demonstrate the additional illumination and improved velocity inversion obtained when including multiscattered energy. © 2016 Society of Exploration Geophysicists.
dc.description.sponsorshipWe thank KAUST for its support. We also thank A. Guitton, J. Cheng, and three anonymous reviewers for their constructive comments and suggestions that ultimately helped to improve the paper.
dc.publisherSociety of Exploration Geophysicists
dc.relation.urlhttp://library.seg.org/doi/10.1190/geo2015-0650.1
dc.rightsArchived with thanks to GEOPHYSICS
dc.titleMultiscattering inversion for low-model wavenumbers
dc.typeArticle
dc.contributor.departmentEarth Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentSeismic Wave Analysis Group
dc.identifier.journalGEOPHYSICS
dc.eprint.versionPublisher's Version/PDF
kaust.personAlkhalifah, Tariq Ali
kaust.personWu, Zedong
refterms.dateFOA2018-06-14T03:33:48Z
dc.date.published-online2016-09-21
dc.date.published-print2016-11


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