Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/12170
DC FieldValueLanguage
dc.date.accessioned2019-01-30T09:04:13Zen
dc.date.available2019-01-30T09:04:13Zen
dc.date.issued2015en
dc.identifier.urihttp://hdl.handle.net/2122/12170en
dc.description.abstractThe present study is focused on the analysis of the latitudinal dependence of complexity degree of the short timescale geomagnetic field fluctuations during four intense geomagnetic storms occurring between 2000 and 2003. The aim is that of investigating the qualitative and quantitative changes in the dynamical properties of the magnetospheric system during magnetically disturbed periods. We analyze the short timescale fluctuations (<120 min) of the horizontal component of the Earth’s magnetic field at nine different geomagnetic observatories from 49∘N magnetic latitude (MLat) to 87∘N MLat, by filtering the signal via empirical mode decomposition and successively by applying the permutation entropy analysis to the filtered time series. We show that some properties of the geomagnetic fluctuations during the selected periods are the result of dynamical changes in the magnetospheric system response to the solar wind changes and that these geomagnetic fluctuations display a complex character during the geomagnetic storm development. This evidence supports the idea that the geomagnetic storm nature may be the result of a cooperative and collective dynamics. We also find that the permutation entropy values change with latitude suggesting a latitudinal dependence of the complexity degree of the signals.en
dc.language.isoEnglishen
dc.relation.ispartofJournal of Geophysical Research: Space Physicsen
dc.relation.ispartofseries/120 (2015)en
dc.rightsCC0 1.0 Universalen
dc.rights.urihttp://creativecommons.org/publicdomain/zero/1.0/en
dc.subjectgeomagnetic field fluctuationsen
dc.subjectpermutation entropyen
dc.titleLatitudinal dependence of short timescale fluctuations during intense geomagnetic storms: A permutation entropy approachen
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber5633-5644en
dc.subject.INGV04.05. Geomagnetismen
dc.identifier.doi10.1002/2015JA021279en
dc.description.obiettivoSpecifico1A. Geomagnetismo e Paleomagnetismoen
dc.description.journalTypeJCR Journalen
dc.contributor.authorDe Michelis, Paolaen
dc.contributor.authorConsolini, Giuseppeen
dc.contributor.authorTozzi, Robertaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italiaen
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 Roma2, Roma, Italia-
crisitem.author.deptINAF – Istituto di Astrofisica e Planetologia Spaziali, 00133 Roma, Italy-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia-
crisitem.author.orcid0000-0002-2708-0739-
crisitem.author.orcid0000-0002-3403-647X-
crisitem.author.orcid0000-0002-1836-4078-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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