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Seismic imaging of the western iberian crust using ambient noise: boundaries and internal structure of the Iberian Massif

2013-03-18Journal article Open access
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dc.contributor.authorSilveira, Graça
dc.contributor.authorDias, Nuno
dc.contributor.authorVillasenor, Antonio
dc.date.accessioned2013-10-26T20:06:48Z
dc.date.available2013-10-26T20:06:48Z
dc.date.issued2013-03-18
dc.description.abstractWe present new Rayleigh-wave dispersion maps of the western Iberian Peninsula for periods between 8 and 30 s, obtained from correlations of seismic ambient noise, following the recent increase in seismic broadband network density in Portugal and Spain. Group velocities have been computed for each station pair using the empirical Green's functions generated by cross-correlating one-day-length seismic ambient-noise records. The resulting high-path density allows us to obtain lateral variations of the group velocities as a function of period in cells of 0.5 degrees x 0.5 degrees with an unprecedented resolution. As a result we were able to address some of the unknowns regarding the lithospheric structure beneath SW Iberia. The dispersion maps allow the imaging of the major structural units, namely the Iberian Massif, and the Lusitanian and Algarve Meso-Cenozoic basins. The Cadiz Gulf/Gibraltar Strait area corresponds to a strong low-velocity anomaly, which can be followed to the largest period inverted, although slightly shifted to the east at longer periods. Within the Iberian Massif, second-order perturbations in the group velocities are consistent with the transitions between tectonic units composing the massif. (C) 2013 Elsevier B.V. All rights reserved.por
dc.identifier.citationSILVEIRA, Graça; DIAS, Nuno Afonso; VILLASENOR, António - Seismic imaging of the western iberian crust using ambient noise: boundaries and internal structure of the Iberian Massif. Tectonophysics. ISSN 0040-1951. Vol. 589, N.º 5 (2013), pp. 186-194.por
dc.identifier.doi10.1016/j.tecto.2012.12.025
dc.identifier.issn0040-1951
dc.identifier.other10.1016/j.tecto.2012.12.025
dc.identifier.urihttp://hdl.handle.net/10400.21/2802
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevier Science BVpor
dc.subjectSeismic interferometrypor
dc.subjectAmbient noisepor
dc.subjectSurface-wave tomographypor
dc.subjectIberian Peninsulapor
dc.subjectIberian Massifpor
dc.titleSeismic imaging of the western iberian crust using ambient noise: boundaries and internal structure of the Iberian Massifpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceAmsterdampor
oaire.citation.endPage194por
oaire.citation.issue5por
oaire.citation.startPage186por
oaire.citation.titleTectonophysicspor
oaire.citation.volume589por
person.familyNameSilveira
person.familyNameDias
person.familyNameVillasenor
person.givenNameGraça
person.givenNameNuno
person.givenNameAntonio
person.identifier91922
person.identifier1348964
person.identifier396943
person.identifier.ciencia-id1116-1080-16F3
person.identifier.ciencia-idDB10-5086-2205
person.identifier.orcid0000-0002-2110-2554
person.identifier.orcid0000-0001-7672-4476
person.identifier.orcid0000-0001-8592-4832
person.identifier.ridA-3081-2009
person.identifier.ridB-2778-2008
person.identifier.ridA-8037-2008
person.identifier.scopus-author-id6602698071
person.identifier.scopus-author-id56640885300
person.identifier.scopus-author-id7003740684
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
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relation.isAuthorOfPublication.latestForDiscoveryd7e4c7da-29b6-439f-ab4a-f5d94c1d7ca5

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