Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/9597
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dc.contributor.authorallGualtieri, L.en
dc.contributor.authorallStutzmann, E.en
dc.contributor.authorallStutzmann, Y.en
dc.contributor.authorallArdhuin, F.en
dc.contributor.authorallSchimmel, M.en
dc.contributor.authorallMangeney, A.en
dc.contributor.authorallMorelli, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italiaen
dc.date.accessioned2015-05-18T09:46:38Zen
dc.date.available2015-05-18T09:46:38Zen
dc.date.issued2013en
dc.identifier.urihttp://hdl.handle.net/2122/9597en
dc.description.abstractSecondary microseisms recorded by seismic stations are generated in the ocean by the interaction of ocean gravity waves.We present here the theory for modelling secondary microseismic noise by normal mode summation.We show that the noise sources can be modelled by vertical forces and how to derive them from a realistic ocean wave model. We then show how to compute bathymetry excitation effect in a realistic earth model by using normal modes and a comparison with Longuet–Higgins approach. The strongest excitation areas in the oceans depends on the bathymetry and period and are different for each seismic mode. Seismic noise is then modelled by normal mode summation considering varying bathymetry. We derive an attenuation model that enables to fit well the vertical component spectra whatever the station location. We show that the fundamental mode of Rayleigh waves is the dominant signal in seismic noise. There is a discrepancy between real and synthetic spectra on the horizontal components that enables to estimate the amount of Love waves for which a different source mechanism is needed. Finally, we investigate noise generated in all the oceans around Africa and show that most of noise recorded in Algeria (TAM station) is generated in the Northern Atlantic and that there is a seasonal variability of the contribution of each ocean and sea.en
dc.language.isoEnglishen
dc.publisher.nameWiley-Blackwellen
dc.relation.ispartofGeophysical Journal Internationalen
dc.relation.ispartofseries/193(2013)en
dc.subjectSurface waves and free oscillationsen
dc.subjectSeismic attenuationen
dc.subjectTheoretical seismologyen
dc.subjectWave propagationen
dc.titleModelling secondary microseismic noise by normal mode summationen
dc.typearticleen
dc.description.statusPublisheden
dc.description.pagenumber1732-1745en
dc.subject.INGV04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneousen
dc.identifier.doi10.1093/gji/ggt090en
dc.description.obiettivoSpecifico1T. Geodinamica e interno della Terraen
dc.description.journalTypeJCR Journalen
dc.description.fulltextrestricteden
dc.relation.issn0956-540Xen
dc.relation.eissn1365-246Xen
dc.contributor.authorGualtieri, L.en
dc.contributor.authorStutzmann, E.en
dc.contributor.authorStutzmann, Y.en
dc.contributor.authorArdhuin, F.en
dc.contributor.authorSchimmel, M.en
dc.contributor.authorMangeney, A.en
dc.contributor.authorMorelli, A.en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italiaen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptDepartment of Geophysics, Stanford University, Stanford, CA, U.S.A.-
crisitem.author.deptServiceIdrographique et Oceanographique de la marine, 13 rue du Chatelier, 29200 Brest, France-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Bologna, Bologna, Italia-
crisitem.author.orcid0000-0002-7400-8676-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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