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dc.contributor.authorLi, Jing
dc.contributor.authorHanafy, Sherif
dc.contributor.authorSchuster, Gerard T.
dc.date.accessioned2019-03-11T07:08:07Z
dc.date.available2019-03-11T07:08:07Z
dc.date.issued2018-08-27
dc.identifier.citationLi J, Hanafy S, Schuster GT (2018) Dispersion inversion of guided P-waves in a waveguide of arbitrary geometry. SEG Technical Program Expanded Abstracts 2018. Available: http://dx.doi.org/10.1190/segam2018-2996586.1.
dc.identifier.doi10.1190/segam2018-2996586.1
dc.identifier.urihttp://hdl.handle.net/10754/631488
dc.description.abstractWe present the theory for wave equation inversion of dispersion curves obtained from traces containing guided P waves. The misfit function is the sum of the squared differences between the wavenumbers along the predicted and observed dispersion curves, and the inverted result is a high-resolution estimate of the near-surface P-velocity model. This procedure, denoted as the wave equation dispersion inversion of guided P waves (WDG), is valid for near-surface waveguides with irregular layers. It is less prone to the cycle skipping problems of full waveform inversion (FWI) and can sometimes provide velocity models with higher resolution than wave-equation traveltime tomography (WT). The synthetic and field data examples demonstrate that WDG for guided P waves can accurately reconstruct the P-wave velocity distribution in laterally heterogeneous media.
dc.description.sponsorshipWe thank the financial support from the sponsors of the Consortium of Subsurface Imaging and Fluid Modeling (CSIM) and the supercomputing center at KAUST for computational resources. We also thank the China Postdoctoral Science Foundation 2106T902503 and 2015M571366.
dc.publisherSociety of Exploration Geophysicists
dc.relation.urlhttps://library.seg.org/doi/10.1190/segam2018-2996586.1
dc.rightsArchived with thanks to SEG Technical Program Expanded Abstracts 2018
dc.subjectdispersion
dc.subjectwave equation
dc.subjectinversion
dc.titleDispersion inversion of guided P-waves in a waveguide of arbitrary geometry
dc.typeConference Paper
dc.contributor.departmentCenter for Subsurface Imaging and Fluid Modeling
dc.contributor.departmentEarth Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
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
dc.contributor.institutionCollege of Geo-Exploration Science and Technology, Jilin University, Changchun 130026
kaust.personLi, Jing
kaust.personHanafy, Sherif
kaust.personSchuster, Gerard T.
refterms.dateFOA2019-03-12T14:10:00Z
dc.date.published-online2018-08-27
dc.date.published-print2018-08-27


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