Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/4668
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dc.contributor.authorallCannata, A.; Dipartimento di Scienze Geologiche, Università di Catania, Italiaen
dc.contributor.authorallCatania, A.; Dipartimento di Scienze Geologiche, Università di Catania, Italiaen
dc.contributor.authorallAlparone, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italiaen
dc.contributor.authorallGresta, S.; Dipartimento di Scienze Geologiche, Università di Catania, Italiaen
dc.date.accessioned2008-12-12T11:46:58Zen
dc.date.available2008-12-12T11:46:58Zen
dc.date.issued2008-11-30en
dc.identifier.urihttp://hdl.handle.net/2122/4668en
dc.description.abstractDuring 1999, the volcanic activity at Mt. Etna was both explosive and effusive at the summit craters: Strombolian activity, lava fountains and lava flows affected different areas of the volcano, involving three of the four summit craters. Results from analysis of the 1999 volcanic tremor features are shown at two different time scales. First, the long-term time variation of the features of the volcanic tremor (including spectral and polarization parameters), during the entire year, was compared with the evolution of the eruptive activity. This approach demonstrated the good agreement between tremor data and observed eruptive activity; the activation of different tremor sources was suggested. Then, a more refined analysis of the volcanic tremor, recorded during 14 lava fountain eruptions, was performed. In particular, a shift of the dominant frequencies towards lower values was noted which corresponds with increasing explosive activity. Similar behaviour in the frequency content has already been observed in other explosive eruptions at Mt. Etna as well as on other volcanoes. This behaviour has been explained in terms of either an increase in the tremor source dimension or a decrease in the sound speed in the magma within the conduit. These results confirm that the volcanic tremor is a powerful tool for better understanding the physical processes controlling explosive eruptions at Mt. Etna volcano.en
dc.language.isoEnglishen
dc.publisher.nameELSEVIERen
dc.relation.ispartofJournal of Volcanology and Geothermal Researchen
dc.relation.ispartofseries1/178(2008)en
dc.subjectMt. Etnaen
dc.subjectvolcanic tremoren
dc.subjectspectral and polarization analysisen
dc.subjecteffusive and explosive activityen
dc.titleVolcanic tremor at Mt. Etna: Inferences on magma dynamics during effusive and explosive activityen
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber19-31en
dc.subject.INGV04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismologyen
dc.identifier.doi10.1016/j.jvolgeores.2007.11.027en
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dc.description.obiettivoSpecifico1.4. TTC - Sorveglianza sismologica delle aree vulcaniche attiveen
dc.description.journalTypeJCR Journalen
dc.description.fulltextreserveden
dc.contributor.authorCannata, A.en
dc.contributor.authorCatania, A.en
dc.contributor.authorAlparone, S.en
dc.contributor.authorGresta, S.en
dc.contributor.departmentDipartimento di Scienze Geologiche, Università di Catania, Italiaen
dc.contributor.departmentDipartimento di Scienze Geologiche, Università di Catania, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italiaen
dc.contributor.departmentDipartimento di Scienze Geologiche, Università di Catania, Italiaen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptUniversità degli Studi di Perugia-
crisitem.author.deptDipartimento di Scienze Geologiche, Università di Catania, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OE, Catania, Italia-
crisitem.author.deptUniversità di Catania-
crisitem.author.orcid0000-0002-0028-5822-
crisitem.author.orcid0000-0003-1161-1512-
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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