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dc.contributor.authorChoi, Yun Seok
dc.contributor.authorAlkhalifah, Tariq Ali
dc.contributor.authorDeVault, Bryan
dc.date.accessioned2016-01-10T10:38:19Z
dc.date.available2016-01-10T10:38:19Z
dc.date.issued2015-08-19
dc.identifier.citationYunseok Choi*, Tariq Alkhalifah, and Bryan DeVault (2015) Application of the unwrapped phase inversion to land data without source estimation. SEG Technical Program Expanded Abstracts 2015: pp. 1225-1229. doi: 10.1190/segam2015-5873514.1
dc.identifier.doi10.1190/segam2015-5873514.1
dc.identifier.urihttp://hdl.handle.net/10754/593186
dc.description.abstractUnwrapped phase inversion with a strong damping was developed to solve the phase wrapping problem in frequency-domain waveform inversion. In this study, we apply the unwrapped phase inversion to band-limited real land data, for which the available minimum frequency is quite high. An important issue of the data is a strong ambiguity of source-ignition time (or source shift) shown in a seismogram. A source-estimation approach does not fully address the issue of source shift, since the velocity model and the source wavelet are updated simultaneously and interact with each other. We suggest a source-independent unwrapped phase inversion approach instead of relying on source-estimation from this land data. In the source-independent approach, the phase of the modeled data converges not to the exact phase value of the observed data, but to the relative phase value (or the trend of phases); thus it has the potential to solve the ambiguity of source-ignition time in a seismogram and work better than the source-estimation approach. Numerical examples show the validation of the source-independent unwrapped phase inversion, especially for land field data having an ambiguity in the source-ignition time.
dc.language.isoen
dc.publisherSociety of Exploration Geophysicists
dc.relation.urlhttp://library.seg.org/doi/10.1190/segam2015-5873514.1
dc.rightsArchived with thanks to SEG Technical Program Expanded Abstracts 2015
dc.subjectfrequency-domain
dc.subjectinversion
dc.subjectphase
dc.subjectsources
dc.subjectland
dc.titleApplication of the unwrapped phase inversion to land data without source estimation
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.institutionVecta Oil and Gas Ltd.
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
kaust.personChoi, Yun Seok
kaust.personAlkhalifah, Tariq Ali
refterms.dateFOA2018-06-14T03:54:24Z
dc.date.published-online2015-08-19
dc.date.published-print2015-08-19


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