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dc.contributor.authorAlkhalifah, Tariq Ali
dc.contributor.authorSun, Bingbing
dc.date.accessioned2020-06-09T10:37:37Z
dc.date.available2020-06-09T10:37:37Z
dc.date.issued2018-10-16
dc.identifier.citationSun, B., & Alkhalifah, T. (2018). Mitigate Cycle Skipping in FWI: a Generalized Instanatenous Travel-Time Approach. 80th EAGE Conference and Exhibition 2018. doi:10.3997/2214-4609.201801028
dc.identifier.isbn9789462822542
dc.identifier.doi10.3997/2214-4609.201801028
dc.identifier.urihttp://hdl.handle.net/10754/663444
dc.description.abstractConsidering the complex nonlinearity between seismic data and perturbations in the model, a waveform optimization problem based on the least square sample-to-sample comparison has proven to be inadequate in dealing with such nonlinearity. A slew of more global comparison based optimizations have proven their values in circumventing such nonlinearity. Among these methods in particular, adaptive waveform inversion (AWI), which is based on the deconvolution operator, offers the right balance between phase matching and amplitude normalization. The key element in the AWI success is the normalization factor, which is inherently offered by the instantaneous traveltime measure used to unwrap the phase. Thus, we recast the AWI problem using a misfit function based on the original generalized instantaneous travel time, which highlights some of the features of AWI and traces their roots. We demonstrate that the misfit function of AWI is actually the least square averaged instantaneous travel time over multiple frequencies. We use the Marmousi model and Chevron 2014 FWI benchmark dataset to verify the effectiveness of the proposed method.
dc.description.sponsorshipWe thank KAUST for its support and SWAG group for useful discussions. We appreciate Chevron for the 2014 FWI benchmark dataset.
dc.publisherEAGE Publications
dc.relation.urlhttp://www.earthdoc.org/publication/publicationdetails/?publication=92417
dc.rightsArchived with thanks to EAGE Publications BV
dc.titleMitigate cycle skipping in FWI: A generalized instanatenous travel-time approach
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.date2018-06-11 to 2018-06-14
dc.conference.name80th EAGE Conference and Exhibition 2018: Opportunities Presented by the Energy Transition
dc.conference.locationCopenhagen, DNK
dc.eprint.versionPost-print
kaust.personAlkhalifah, Tariq Ali
kaust.personSun, Bingbing
dc.identifier.eid2-s2.0-85083938640
kaust.acknowledged.supportUnitSWAG group


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