Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/8010
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dc.contributor.authorallDe Lauro, E.; Dept. Ingegneria Industriale, Università degli Studi di Salerno,en
dc.contributor.authorallFalanga, M.; Dept. Ingegneria Industriale, Università degli Studi di Salerno,en
dc.contributor.authorallPetrosino, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italiaen
dc.date.accessioned2012-07-31T12:15:37Zen
dc.date.available2012-07-31T12:15:37Zen
dc.date.issued2012-07-07en
dc.identifier.urihttp://hdl.handle.net/2122/8010en
dc.description.abstractThe source properties of the Long-Period events that occurred at Campi Flegrei Caldera (Italy) during the 2004–2006 ground uplift episode are investigated by analyzing the temporal release of seismic energy, amplitude distribution and inter-event occurrence time. Moreover, an entropy-based decomposition method is applied to identify the simpler waveforms thought to be representative of the source mechanism of Long-Period events. On the basis of the outcomes, we propose that the main part of these events is the result of a source process triggered by a mechanism of fluid charge/discharge, which causes pressure drop in a main branch of a dentritic network of the hydrothermal system. In this model, the rate of the Poissonian process (about 15 min), which drives the occurrence of the Long-Period events, provides the average recharge time of the system up to the critical condition. A partial shunting of the fluid flow away from the main conduit activates the ”resonance” of a second branch, spatially separated from the first one. This is a process that occurs whenever the fluid pressure exceeds a critical value and produces less energetic Long-Period events. The mechanism of pressure variation in the two conduits generates signals with preferred amplitude scales, described by a bi-lognormal distribution. From a dynamical point of view, Long-Period events result well described by a low-dimensional dynamical system. Finally, the time pattern of the energy release and its correlation with the diurnal solid earth tide suggest that the whole mechanism of fluid charge/discharge is likely modulated by tidal stress variation.en
dc.language.isoEnglishen
dc.publisher.nameElsevier Science Limiteden
dc.relation.ispartofPhysics of the Earth and Planetary Interiorsen
dc.relation.ispartofseries/206-207 (2012)en
dc.subjectLp sourcesen
dc.subjectPoissonian occurrenceen
dc.subjectTidal modulationen
dc.titleStudy on the Long-Period source mechanism at Campi Flegrei (Italy)en
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber16-30en
dc.identifier.URLhttp://www.sciencedirect.com/science/article/pii/S0031920112001100en
dc.subject.INGV04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismologyen
dc.identifier.doi10.1016/j.pepi.2012.06.006,en
dc.description.obiettivoSpecifico3.6. Fisica del vulcanismoen
dc.description.journalTypeJCR Journalen
dc.description.fulltextpartially_openen
dc.relation.issn0031-9201en
dc.relation.eissn1872-7395en
dc.contributor.authorDe Lauro, E.en
dc.contributor.authorFalanga, M.en
dc.contributor.authorPetrosino, S.en
dc.contributor.departmentDept. Ingegneria Industriale, Università degli Studi di Salerno,en
dc.contributor.departmentDept. Ingegneria Industriale, Università degli Studi di Salerno,en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italiaen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptUniversity of Salerno-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OV, Napoli, Italia-
crisitem.author.orcid0000-0002-8841-1861-
crisitem.author.orcid0000-0002-5042-0244-
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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