Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/4256
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dc.contributor.authorallDel Pezzo, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italiaen
dc.contributor.authorallBianco, F.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italiaen
dc.contributor.authorallDe Siena, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italiaen
dc.contributor.authorallZollo, A.; Dipartimento di Scienze Fisiche, Universit`a di Napoli Federico II, Italyen
dc.date.accessioned2008-11-24T15:36:32Zen
dc.date.available2008-11-24T15:36:32Zen
dc.date.issued2006-04-20en
dc.identifier.urihttp://hdl.handle.net/2122/4256en
dc.description.abstractWe present a high resolution 3D model of S-wave attenuation (Q −1 S ) for the volcanic structure of Mt. Vesuvius. Data from 959 waveforms relative to 332 volcano-tectonic earthquakes located close to the crater axis in a depth range between 1 and 4 km (below the sea level) recorded at 6 three-component seismic stations were used for the inversion. We obtained the estimate of Q −1 S for each source–station pair using a single-station method based on the normalization of the S-wave spectrum for the coda spectrum at 12 s lapse time. This is a modification of the well known coda-normalization method to estimate the average Q −1 S for a given area. We adopt a parabolic ray-tracing in the high resolution 3D velocity model which was previously estimated using almost the same data set; then we solve a linear inversion scheme using the L-squared norm with positive constraints in 900 m-side cubic blocks, obtaining the estimate of Q −1 S for each block. Robusteness and stability of the results are tested changing in turn the input data set and the inversion technique. Resolution is tested with both checkerboard and spike tests. Results show that attenuation structure resembles the velocity structure, well reproducing the interface between the carbonates and the overlying volcanick rocks which form the volcano. Analysis is well resolved till to a depth of 4–5 km. Higher Q contrast is found for the block overlying the carbonate basement and close to the crater axis, almost cohincident with a positive P-wave velocity contrast located in the same volume and previously interpreted as the residual high density body related to the last eruptions of Mt. Vesuvius. We interpret this high-Q zone as the upper part of carbonate basement in which most of the high energy seismicity take place. The low-Q values found at shallow depth are interpreted as due to the high heterogeneity mainly caused by the mixing of lava layers and pyroclastic materials extruded during the last eruptions.en
dc.language.isoEnglishen
dc.publisher.nameElsevieren
dc.relation.ispartofPhysics of the Earth and Planetary Interiorsen
dc.relation.ispartofseries/157 (2006)en
dc.subjectAttenuation tomographyen
dc.subjectMt. Vesuviusen
dc.subjectCoda Normalization methoden
dc.titleSmall scale shallow attenuation structure at Mt. Vesuvius, Italy.en
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber257-268en
dc.subject.INGV04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropyen
dc.identifier.doi10.1016/j.pepi.2006.04.009en
dc.description.obiettivoSpecifico3.1. Fisica dei terremotien
dc.description.journalTypeJCR Journalen
dc.description.fulltextreserveden
dc.contributor.authorDel Pezzo, E.en
dc.contributor.authorBianco, F.en
dc.contributor.authorDe Siena, L.en
dc.contributor.authorZollo, A.en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italiaen
dc.contributor.departmentDipartimento di Scienze Fisiche, Universit`a di Napoli Federico II, Italyen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OV, Napoli, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OV, Napoli, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OV, Napoli, Italia-
crisitem.author.orcid0000-0002-6981-5967-
crisitem.author.orcid0000-0001-5400-7724-
crisitem.author.orcid0000-0002-3615-5923-
crisitem.author.orcid0000-0002-8191-9566-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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