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dc.contributor.authorDai, Wei
dc.contributor.authorSchuster, Gerard T.
dc.date.accessioned2016-01-18T14:13:16Z
dc.date.available2016-01-18T14:13:16Z
dc.date.issued2012-10-25
dc.identifier.citationDai, W., & Schuster, G. T. (2012). Plane-wave Least-squares Reverse Time Migration. SEG Technical Program Expanded Abstracts 2012. doi:10.1190/segam2012-0382.1
dc.identifier.doi10.1190/segam2012-0382.1
dc.identifier.urihttp://hdl.handle.net/10754/593744
dc.description.abstractLeast-squares reverse time migration is formulated with a new parameterization, where the migration image of each shot is updated separately and a prestack image is produced with common image gathers. The advantage is that it can offer stable convergence for least-squares migration even when the migration velocity is not completely accurate. To significantly reduce computation cost, linear phase shift encoding is applied to hundreds of shot gathers to produce dozens of planes waves. A regularization term which penalizes the image difference between nearby angles are used to keep the prestack image consistent through all the angles. Numerical tests on a marine dataset is performed to illustrate the advantages of least-squares reverse time migration in the plane-wave domain. Through iterations of least-squares migration, the migration artifacts are reduced and the image resolution is improved. Empirical results suggest that the LSRTM in plane wave domain is an efficient method to improve the image quality and produce common image gathers.
dc.publisherSociety of Exploration Geophysicists
dc.relation.urlhttp://library.seg.org/doi/abs/10.1190/segam2012-0382.1
dc.subjectinversion
dc.subjectlinear
dc.subjectseismic
dc.titlePlane-wave Least-squares Reverse Time Migration
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 2012
dc.conference.dateNovember 4-9, 2012
dc.conference.nameSEG Technical Program Expanded Abstracts 2012
dc.conference.locationLas Vegas, Nevada
dc.eprint.versionPublisher's Version/PDF
kaust.personDai, Wei
kaust.personSchuster, Gerard T.
refterms.dateFOA2018-06-13T13:55:36Z
dc.date.published-online2012-10-25
dc.date.published-print2012-09


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