Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/4769
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dc.contributor.authorallBarberi, G.; Dipartimento di Scienze della Terra, University of Messinaen
dc.contributor.authorallCocina, O.; Istituto Internazionale di Vulcanologia, CNR, Cataniaen
dc.contributor.authorallNeri, G.; Dipartimento di Scienze della Terra, University of Messinaen
dc.contributor.authorallPrivitera, E.; Istituto Internazionale di Vulcanologia, CNR, Cataniaen
dc.contributor.authorallSpampinato, S.; Istituto Internazionale di Vulcanologia, CNR, Cataniaen
dc.date.accessioned2008-12-15T12:08:20Zen
dc.date.available2008-12-15T12:08:20Zen
dc.date.issued2000-10-26en
dc.identifier.urihttp://hdl.handle.net/2122/4769en
dc.description.abstractKostrov's (1974) algorithm for seismic-strain tensor computations, in the version implemented by Wyss et al. (1992a) for error estimates, has been applied to shear-type earthquakes occurring beneath the Etna volcano during 1990-1996. Space-time variations of strain orientations and amplitudes have been examined jointly with ground-deformation and gravimetric data collected in the same period and reported in the literature. Taking also into account the information available from volcanological observations and structural geology, we propose a model assuming that hydraulic pressure by magma emplaced in nearly north-south vertical structures produces the E-W orientation of the maximum compressive strain found in the upper 10 km beneath the crater area. In contrast, regional tectonics deriving from the slow, north-south convergence between the African and European plates appear to play a dominant role in the generation of stress and strain fields at crustal depths deeper than 10 km below the volcano. According to our interpretation, the progressive ascent of magma through the upper crust prior to eruption produces the observed gravity changes, cone inflation and unusual seismic strain rate in the upper 10 km associated with a more sharply defined seismic deformation regime (i.e. very small confidence limits of the epsilon 1 orientation). In agreement with this model, deflation revealed by ground-deformation data during the course of the major 1991-1993 eruption was accompanied by a practically nil level of shallow seismicity.en
dc.language.isoEnglishen
dc.publisher.nameSpringeren
dc.relation.ispartofBulletin of Volcanologyen
dc.relation.ispartofseries4-5/62(2000)en
dc.subjectMt. Etnaen
dc.subjectItalyen
dc.subjectEarthquakesen
dc.subjectSeismic strainen
dc.subjectStress inversionen
dc.subjectVolcanic processesen
dc.titleVolcanological inferences from seismic-strain tensor computations at Mt. Etna Volcano, Sicilyen
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber318-330en
dc.subject.INGV04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismologyen
dc.identifier.doi10.1007/s004450000101en
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Proc Kagoshima Int Conf on Volcanoes, July 1988, pp 491-494 Wyss M, Liang B, Tanigawa WR, Xiaoping W (1992a) Comparison of orientations of stress and strain tensor based on fault plane solutions in Kaoiki, Hawaii. J Geophys Res 97:4769-4790 Wyss M, Gillard D, Liang B (1992b) An estimate of the absolute stress tensor in Kaoiki, Hawaii. J Geophys Res 97:4763-4768en
dc.description.journalTypeJCR Journalen
dc.description.fulltextopenen
dc.contributor.authorBarberi, G.en
dc.contributor.authorCocina, O.en
dc.contributor.authorNeri, G.en
dc.contributor.authorPrivitera, E.en
dc.contributor.authorSpampinato, S.en
dc.contributor.departmentDipartimento di Scienze della Terra, University of Messinaen
dc.contributor.departmentIstituto Internazionale di Vulcanologia, CNR, Cataniaen
dc.contributor.departmentDipartimento di Scienze della Terra, University of Messinaen
dc.contributor.departmentIstituto Internazionale di Vulcanologia, CNR, Cataniaen
dc.contributor.departmentIstituto Internazionale di Vulcanologia, CNR, Cataniaen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia-
crisitem.author.deptDipartimento di Scienze della Terra, Università di Messina-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia-
crisitem.author.orcid0000-0002-8273-0458-
crisitem.author.orcid0000-0003-1856-830X-
crisitem.author.orcid0000-0001-9623-1919-
crisitem.author.orcid0000-0002-1954-1080-
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.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
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