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dc.contributor.authorWu, Zedong
dc.contributor.authorAlkhalifah, Tariq Ali
dc.date.accessioned2016-01-07T08:12:03Z
dc.date.available2016-01-07T08:12:03Z
dc.date.issued2015-08-19
dc.identifier.citationZedong Wu and Tariq Alkhalifah (2015) A nonlinear inversion for the velocity background and perturbation models. SEG Technical Program Expanded Abstracts 2015: pp. 1292-1296. doi: 10.1190/segam2015-5846177.1
dc.identifier.doi10.1190/segam2015-5846177.1
dc.identifier.urihttp://hdl.handle.net/10754/593054
dc.description.abstractReflected waveform inversion (RWI) provides a method to reduce the nonlinearity of the standard full waveform inversion (FWI) by inverting for the single scattered wavefield obtained using an image. However, current RWI methods usually neglect diving waves, which is an important source of information for extracting the long wavelength components of the velocity model. Thus, we propose a new optimization problem through breaking the velocity model into the background and the perturbation in the wave equation directly. In this case, the perturbed model is no longer the single scattering model, but includes all scattering. We optimize both components simultaneously, and thus, the objective function is nonlinear with respect to both the background and perturbation. The new introduced w can absorb the non-smooth update of background naturally. Application to the Marmousi model with frequencies that start at 5 Hz shows that this method can converge to the accurate velocity starting from a linearly increasing initial velocity. Application to the SEG2014 demonstrates the versatility of the approach.
dc.language.isoen
dc.publisherSociety of Exploration Geophysicists
dc.relation.urlhttp://library.seg.org/doi/10.1190/segam2015-5846177.1
dc.rightsArchived with thanks to SEG Technical Program Expanded Abstracts 2015
dc.subjectinversion
dc.subjectfiltering
dc.subjectdiving wave
dc.subjectreflection
dc.subjectmultiples
dc.titleA nonlinear inversion for the velocity background and perturbation models
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.journalSEG Technical Program Expanded Abstracts 2015
dc.eprint.versionPublisher's Version/PDF
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
kaust.personWu, Zedong
kaust.personAlkhalifah, Tariq Ali
refterms.dateFOA2018-06-13T13:46:26Z
dc.date.published-online2015-08-19
dc.date.published-print2015-08-19


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