Resolution limits for wave equation imaging

Handle URI:
http://hdl.handle.net/10754/563674
Title:
Resolution limits for wave equation imaging
Authors:
Huang, Yunsong; Schuster, Gerard T. ( 0000-0001-7532-1587 )
Abstract:
Formulas are derived for the resolution limits of migration-data kernels associated with diving waves, primary reflections, diffractions, and multiple reflections. They are applicable to images formed by reverse time migration (RTM), least squares migration (LSM), and full waveform inversion (FWI), and suggest a multiscale approach to iterative FWI based on multiscale physics. That is, at the early stages of the inversion, events that only generate low-wavenumber resolution should be emphasized relative to the high-wavenumber resolution events. As the iterations proceed, the higher-resolution events should be emphasized. The formulas also suggest that inverting multiples can provide some low- and intermediate-wavenumber components of the velocity model not available in the primaries. Finally, diffractions can provide twice or better the resolution than specular reflections for comparable depths of the reflector and diffractor. The width of the diffraction-transmission wavepath is approximately λ at the diffractor location for the diffraction-transmission wavepath. © 2014 Elsevier B.V.
KAUST Department:
Earth Science and Engineering Program; Earth Sciences and Engineering Program; Physical Sciences and Engineering (PSE) Division; Environmental Science and Engineering Program
Publisher:
Elsevier BV
Journal:
Journal of Applied Geophysics
Issue Date:
Aug-2014
DOI:
10.1016/j.jappgeo.2014.05.018
Type:
Article
ISSN:
09269851
Sponsors:
Research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST).
Appears in Collections:
Articles; Environmental Science and Engineering Program; Physical Sciences and Engineering (PSE) Division; Earth Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorHuang, Yunsongen
dc.contributor.authorSchuster, Gerard T.en
dc.date.accessioned2015-08-03T12:05:50Zen
dc.date.available2015-08-03T12:05:50Zen
dc.date.issued2014-08en
dc.identifier.issn09269851en
dc.identifier.doi10.1016/j.jappgeo.2014.05.018en
dc.identifier.urihttp://hdl.handle.net/10754/563674en
dc.description.abstractFormulas are derived for the resolution limits of migration-data kernels associated with diving waves, primary reflections, diffractions, and multiple reflections. They are applicable to images formed by reverse time migration (RTM), least squares migration (LSM), and full waveform inversion (FWI), and suggest a multiscale approach to iterative FWI based on multiscale physics. That is, at the early stages of the inversion, events that only generate low-wavenumber resolution should be emphasized relative to the high-wavenumber resolution events. As the iterations proceed, the higher-resolution events should be emphasized. The formulas also suggest that inverting multiples can provide some low- and intermediate-wavenumber components of the velocity model not available in the primaries. Finally, diffractions can provide twice or better the resolution than specular reflections for comparable depths of the reflector and diffractor. The width of the diffraction-transmission wavepath is approximately λ at the diffractor location for the diffraction-transmission wavepath. © 2014 Elsevier B.V.en
dc.description.sponsorshipResearch reported in this publication was supported by King Abdullah University of Science and Technology (KAUST).en
dc.publisherElsevier BVen
dc.subjectComputational seismologyen
dc.subjectMigrationen
dc.subjectTomographyen
dc.subjectWave diffractionen
dc.subjectWave scatteringen
dc.titleResolution limits for wave equation imagingen
dc.typeArticleen
dc.contributor.departmentEarth Science and Engineering Programen
dc.contributor.departmentEarth Sciences and Engineering Programen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentEnvironmental Science and Engineering Programen
dc.identifier.journalJournal of Applied Geophysicsen
kaust.authorHuang, Yunsongen
kaust.authorSchuster, Gerard T.en
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