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dc.contributor.authorWang, T.
dc.contributor.authorCheng, J.B.
dc.contributor.authorGuo, Qiang
dc.contributor.authorWang, C.L.
dc.date.accessioned2017-06-12T08:33:41Z
dc.date.available2017-06-12T08:33:41Z
dc.date.issued2017-05-26
dc.identifier.citationWang T, Cheng JB, Guo Q, Wang CL (2017) Elastic Wave-equation Reflection Traveltime Inversion Using Dynamic Warping and Wave Mode Decomposition. 79th EAGE Conference and Exhibition 2017. Available: http://dx.doi.org/10.3997/2214-4609.201701005.
dc.identifier.doi10.3997/2214-4609.201701005
dc.identifier.urihttp://hdl.handle.net/10754/624902
dc.description.abstractElastic full waveform inversion (EFWI) provides high-resolution parameter estimation of the subsurface but requires good initial guess of the true model. The traveltime inversion only minimizes traveltime misfits which are more sensitive and linearly related to the low-wavenumber model perturbation. Therefore, building initial P and S wave velocity models for EFWI by using elastic wave-equation reflections traveltime inversion (WERTI) would be effective and robust, especially for the deeper part. In order to distinguish the reflection travletimes of P or S-waves in elastic media, we decompose the surface multicomponent data into vector P- and S-wave seismogram. We utilize the dynamic image warping to extract the reflected P- or S-wave traveltimes. The P-wave velocity are first inverted using P-wave traveltime followed by the S-wave velocity inversion with S-wave traveltime, during which the wave mode decomposition is applied to the gradients calculation. Synthetic example on the Sigbee2A model proves the validity of our method for recovering the long wavelength components of the model.
dc.description.sponsorshipThis work is supported by the National Natural Science Foundation of China (NO.41474099, 41674117 & 41630964). This paper is also based upon the work supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under award NO. 2230. We appreciate the open-source package of DENISE from https://github.com/daniel-koehn/ and Mines Java Toolkit from https://github.com/dhale. We thank the useful advice from Tariq Alkhalifah (KAUST), Zedong Wu (KAUST) and Benxin Chi (Los Alamos).
dc.publisherEAGE Publications
dc.relation.urlhttp://www.earthdoc.org/publication/publicationdetails/?publication=88722
dc.rightsGold Open Access
dc.rightsArchived with thanks to 79th EAGE Conference and Exhibition 2017
dc.titleElastic Wave-equation Reflection Traveltime Inversion Using Dynamic Warping and Wave Mode Decomposition
dc.typeConference Paper
dc.contributor.departmentEarth Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journal79th EAGE Conference and Exhibition 2017
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionTongji University
kaust.personGuo, Qiang
kaust.grant.number2230
refterms.dateFOA2018-06-13T18:45:42Z
dc.date.published-online2017-05-26
dc.date.published-print2017-06-12


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