Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/4249
DC FieldValueLanguage
dc.contributor.authorallDe Lauro, E.; Dipartimento di Matematica e Informatica, Universita` degli Studi dien
dc.contributor.authorallDe Martino, S.; Dipartimento di Matematica e Informatica, Universita` degli Studi dien
dc.contributor.authorallDel Pezzo, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italiaen
dc.contributor.authorallFalanga, M. R.; Dipartimento di Matematica e Informatica, Universita` degli Studi dien
dc.contributor.authorallPaolo, M.; Dipartimento di Matematica e Informatica, Universita` degli Studi dien
dc.contributor.authorallScarpa, R.; Dipartimento di Matematica e Informatica, Universita` degli Studi dien
dc.date.accessioned2008-11-24T15:19:51Zen
dc.date.available2008-11-24T15:19:51Zen
dc.date.issued2008en
dc.identifier.urihttp://hdl.handle.net/2122/4249en
dc.description.abstractWe study the volcanic tremor time series recorded by a broadband three-component seismic network installed at Stromboli volcano during 1997. By using decomposition methods in both frequency and time domains, we prove that Strombolian tremor can be described as a linear combination of nonlinear signals in time domain. These ‘‘components’’ are similar to those obtained for explosion quakes, with the only difference being the amplitude enhancement. We characterize each of these nonlinear signals both in terms of their wavefield properties as well as dynamic systems. Moreover, we take into account the complex processes of magma flow and turbulent degassing, looking at time and amplitude modulation of tremor on a suitable scale. The distribution of tremor amplitudes is Gaussian while the intertimes between the maxima in a suitable scale are described by a Poisson clustered process. Starting from these analyses, a first approximate model for volcanic tremor field can be deduced. The recorded signals, i.e., the elastic vibrations at a point, can be described by a nonlinear equation which gives limit cycles (different observed ‘‘nonlinear modes’’). This equation is governed by a time-dependent threshold which represents the variability of bubble flux. We take into account some inelasticity in the medium perturbing the elastic potential with a Gaussian function on a suitable scale. It acts as a radiance function modulating the frequency of the limit cycle. This proposed model is able to reproduce waveform, Fourier spectrum, and phase space dimension of one of the extracted nonlinear wave packets.en
dc.language.isoEnglishen
dc.publisher.nameAmerrican Geophysical Unionen
dc.relation.ispartofJournal of Geophysical Researchen
dc.relation.ispartofseries/113 (2008)en
dc.subjectVolcanic tremoren
dc.subjectStrombolien
dc.titleModel for high-frequency Strombolian tremor inferred by wavefield decomposition andreconstruction of asymptotic dynamicsen
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumberB02302en
dc.subject.INGV04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismologyen
dc.identifier.doi10.1029/2006JB004838en
dc.description.obiettivoSpecifico3.1. Fisica dei terremotien
dc.description.journalTypeJCR Journalen
dc.description.fulltextreserveden
dc.contributor.authorDe Lauro, E.en
dc.contributor.authorDe Martino, S.en
dc.contributor.authorDel Pezzo, E.en
dc.contributor.authorFalanga, M. R.en
dc.contributor.authorPaolo, M.en
dc.contributor.authorScarpa, R.en
dc.contributor.departmentDipartimento di Matematica e Informatica, Universita` degli Studi dien
dc.contributor.departmentDipartimento di Matematica e Informatica, Universita` degli Studi dien
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italiaen
dc.contributor.departmentDipartimento di Matematica e Informatica, Universita` degli Studi dien
dc.contributor.departmentDipartimento di Matematica e Informatica, Universita` degli Studi dien
dc.contributor.departmentDipartimento di Matematica e Informatica, Universita` degli Studi dien
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.deptUniversity of Salerno-
crisitem.author.deptDipartimento di Matematica e Informatica, Universita` degli Studi di-
crisitem.author.deptUniversità di Salerno, Dipartimento di Fisica "E.R. Caianiello", Salerno, Italy-
crisitem.author.orcid0000-0002-8841-1861-
crisitem.author.orcid0000-0002-6981-5967-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
Appears in Collections:Article published / in press
Files in This Item:
File Description SizeFormat Existing users please Login
n. 7 J. Geophys. Res. 2008 De Lauro113.pdfMain Article1.06 MBAdobe PDF
Show simple item record

WEB OF SCIENCETM
Citations 50

19
checked on Feb 7, 2021

Page view(s) 50

180
checked on Mar 27, 2024

Download(s)

26
checked on Mar 27, 2024

Google ScholarTM

Check

Altmetric