Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/7966
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dc.contributor.authorallFalanga, M; Università degli Studi di Salernoen
dc.contributor.authorallPetrosino, S; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italiaen
dc.date.accessioned2012-05-28T08:06:06Zen
dc.date.available2012-05-28T08:06:06Zen
dc.date.issued2012en
dc.identifier.urihttp://hdl.handle.net/2122/7966en
dc.description.abstractIn the present paper, we analyse long-period (LP) events and seismic noise recorded at Campi Flegrei during the uplift episode of 2004–2006. The results of a detailed polarization analysis indicate that the large number of LPs detected during the seismic crisis were accompanied by a sustained activity consisting of very low-energy volcanic signals. These weak volcanic signals, which are usually absent in ambient noise recorded in the studied area, and LP events have similar properties, namely they are radially polarized towards the same LP source. The large dataset analysed allows us to study the statistics of the polarization, leading to the extraction of the average properties of the volcanic signals. An estimate of the complexity of the system can be provided by the degrees of freedom necessary to describe the asymptotic dynamics in a reconstructed phase space. This analysis shows that both LPs and low-energy signals can be described by a low-dimensional dynamical system, while ambient noise unrelated to volcanic activity is higher dimensional. Based on these observations, we interpret the phenomena observed during the seismic crisis in the framework of the theory of self-oscillating systems, in which LPs and low-energy signals represent self-oscillations generated by a persistent hydrothermal source.en
dc.language.isoEnglishen
dc.publisher.nameSpringer Berlin Heidelbergen
dc.relation.ispartofBulletin of volcanologyen
dc.relation.ispartofseries/74 (2012)en
dc.subjectCampi Flegrei, Long-period events, Self-sustained oscillationsen
dc.titleInferences on the source of long-period seismicity at Campi Flegrei from polarization analysis and reconstruction of the asymptotic dynamicsen
dc.typearticleen
dc.description.statusPublisheden
dc.description.pagenumber1537-1551en
dc.identifier.URLhttp://www.springerlink.com/content/g080443822666723/en
dc.subject.INGV04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismologyen
dc.identifier.doi10.1007/s00445-012-0612-2en
dc.description.obiettivoSpecifico1.4. TTC - Sorveglianza sismologica delle aree vulcaniche attiveen
dc.description.journalTypeJCR Journalen
dc.description.fulltextrestricteden
dc.relation.issn0258-8900en
dc.relation.eissn1432-0819en
dc.contributor.authorFalanga, Men
dc.contributor.authorPetrosino, Sen
dc.contributor.departmentUniversità degli Studi di Salernoen
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.orcid0000-0002-5042-0244-
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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