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dc.contributor.authorBharadwaj, P.
dc.contributor.authorNissen-Meyer, T.
dc.contributor.authorSchuster, Gerard T.
dc.contributor.authorMai, Paul Martin
dc.date.accessioned2015-05-21T06:58:21Z
dc.date.available2015-05-21T06:58:21Z
dc.date.issued2013-12-04
dc.identifier.citationEnhancing core-diffracted arrivals by supervirtual interferometry 2013, 196 (2):1177 Geophysical Journal International
dc.identifier.issn0956-540X
dc.identifier.issn1365-246X
dc.identifier.doi10.1093/gji/ggt452
dc.identifier.urihttp://hdl.handle.net/10754/554368
dc.description.abstractA supervirtual interferometry (SVI) method is presented that can enhance the signal-to-noise ratio (SNR) of core diffracted waveforms by as much as O( √ N), where N is the number of inline receivers that record the core-mantle boundary (CMB) diffractions from more than one event. Here, the events are chosen to be approximately inline with the receivers along the same great circle. Results with synthetic and teleseismic data recorded by USArray stations demonstrate that formerly unusable records with low SNR can be transformed to high SNR records with clearly visible CMB diffractions. Another benefit is that SVI allows for the recording of a virtual earthquake at stations not deployed during the time of the earthquake. This means that portable arrays such as USArray can extend the aperture of one recorded earthquake from the West coast to the East coast, even though the teleseism might have only been recorded during theWest coast deployment. In summary, SVI applied to teleseismic data can significantly enlarge the catalogue of usable records both in SNR and available aperture for analysing CMB diffractions. A potential drawback of this method is that it generally provides the correct kinematics of CMB diffractions, but does not necessarily preserve correct amplitude information. © The Authors 2013. Published by Oxford University Press on behalf of The Royal Astronomical Society.
dc.publisherOxford University Press (OUP)
dc.relation.urlhttp://gji.oxfordjournals.org/cgi/doi/10.1093/gji/ggt452
dc.rightsArchived with thanks to Geophysical Journal International © The Authors 2013. Published by Oxford University Press on behalf of The Royal Astronomical Society.
dc.subjectTime-series analysis
dc.subjectInterferometry
dc.subjectCore, outer core and inner core
dc.subjectBody waves
dc.subjectWave scattering and diffraction
dc.subjectIndian Ocean
dc.titleEnhancing core-diffracted arrivals by supervirtual interferometry
dc.typeArticle
dc.contributor.departmentEarth Science and Engineering Program
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.identifier.journalGeophysical Journal International
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionIndian School of Mines, Dhanbad, India
dc.contributor.institutionETH Zurich, Institute of Geophysics, Switzerland
kaust.personSchuster, Gerard T.
kaust.personMai, Paul Martin
kaust.personBharadwaj, Pawan
refterms.dateFOA2018-06-13T10:15:24Z
dc.date.published-online2013-12-04
dc.date.published-print2014-02-01


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