Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/3911
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dc.contributor.authorallConsolini, G.; Istituto di Fisica dello Spazio Interplanetario CNR, 00133 Roma, Italyen
dc.contributor.authorallDe Michelis, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.contributor.authorallMeloni, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.date.accessioned2008-06-23T12:59:42Zen
dc.date.available2008-06-23T12:59:42Zen
dc.date.issued2000-01-15en
dc.identifier.urihttp://hdl.handle.net/2122/3911en
dc.description.abstractThe Earth's magnetic field has reversed its polarity hundreds of times in the Earth's history. This phenomenon is generally viewed as due to a Poisson nonstationary process. Here, the geomagnetic chron time length sequence for the past 166 Ma, is analyzed using a multifractal approach, based on "singularity analysis". The existence of a multifractal structure is the signature of the occurrence of "punctuated equilibrium", which can be read as an indication of a critical configuration of the geodynamo. The results obtained are compared with those from a prototypical model of a dynamical system, introduced by Seki & Ito [1993], and are discussed in the context of fluid motions within the Earth's outer liquid core.en
dc.language.isoEnglishen
dc.publisher.nameAGUen
dc.relation.ispartofGeophysical Research Lettersen
dc.relation.ispartofseries2 / 27 (2000)en
dc.subjectMagnetic field polarity reversalsen
dc.subjectMultifractal approachen
dc.subjectPunctuated equilibriumen
dc.titleMultifractality and Punctuated Equilibrium in the Earth's Magnetic Field Polarity Reversalsen
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber293-296en
dc.subject.INGV04. Solid Earth::04.05. Geomagnetism::04.05.02. Geomagnetic field variations and reversalsen
dc.relation.referencesBak, P., C. Tang, and K. Wiesenfeld, Self-Organized Criticality: An Explanationo f 1/J'N oise, Phys.R ev.L ett., 59, 381, 1987. Benzi,R ., et al., On the multifractaln atureo f fully developedtu rbulence andc haotics ystemsJ, .P hys.A , 17, 3521, 1984. Cande,S ., and D.V. Kent, A new geomagneticp olarityt imescalef or the Late Cretaceousa nd Cenozoic,J . GeophysR. es.,9 7, 13917, 1992. Cande,S ., andD .V. Kent, Revisedc alibrationo f the geomagnetipco larity timescale for the Late Cretaceous and Cenozoic, J. Geophys. Res., 100, 6093, 1995. Chang,T .S., Low-dimensionabl ehaviora nd symmetryb reakingo f stochastics ystemns earc riticality- cant hesee ffectsb e observedin space and in laboratory ?, IEEE Trans. Plasma Sci., 20,691, 1992. Cortini, M., and C.C Barton, Chaosi n geomagneticr eversalr ecords:A comparisonb etweenE arth's magneticf ield data and model disk dynamod ata,J . GeophysR. es.B , 99, 18021, 1994. Davis, A., A. Marshak, W. Wiscombe, and R. Cahalm•, Multifractal characterizations of nonstationarity and intermittency in geophysical fields: Observed, retrieved, or simulated, J. Geophys. Res. D, 99, 8055, 1994. Gaffin, S., Analysis of scaling in the geomagneticp olarity reversalr ecord, Phys. Earth Planet. Int. , 57, 248, 1989. Gallet, Y., andG . Hulot, Stationarya ndn onstationarby ehaviorw ithin the geomagnetipco larityt ime scale,G eophysR. es.L ett., 24, 1875, 1997. Gil L., and D. Sornette, Landau-Ginzburg Theory of Self-Organized Criticality, Phys. Rev. Lett. 76, 3991, 1996. GrassbergerP, ., and I. Procaccia,C haracterizationo f strangea ttractors, Phys. Rev. Lett., 50, 346, 1983. Halsey,T ., et al., Fractalm easuresa ndt heir singularitiesT: he characterizationo f stranges ets,P hys.R ev.A ., 33, 1141, 1986. JensenH, .J.K., Self-OrganisedC riticality:E mergentC omplexB ehaviour in Physical and Biological Systems. Cambridge University Press, CambridgeE, ngland,1 998. Kadanoff,L .P. et al., Staticp henomenan ear critical points:t heorya nd experimentsR, ev. Mod. Phys.,3 9, 395, 1967. Lutz, T.M., and G.S. Watson, Effects of long-term variation on the frequency spectrum of the geomagnetic reversal record, Nature, 334, 240, 1988. McFaddenP, .L. m•dR .T. Merrill, Lower mantlec onvectiona ndg eomagnetism, J . GeophysR. es.,8 9, 3354, 1984. McFaddenP .L., Statisticatlo olsf or the analysiso f geomagnetirce versal sequenceJs., GeophysR. es.,8 9, 3363, 1984. McFadden, P.L. m•d R.T. Merrill, History of the Earth's magnetic field and possiblec onnectionsto core-mantleb oundaryp rocessesJ,. Ge ophys. Res., 100, 317, 1995. Meneveau, C., and K.R. Sreenivasan, The multit¾actal nature of turbulent energyd issipationJ,. Fluid Mech., 224, 429, 1991. Merrill, R.T., and P.L. McFadden,P aleomagnetisman dt he natureo f the geodynamoS, cience,2 48, 345, 1990. Merrill, R.T., M.W., McE!hinny, and P.L. McFadden, The Magnetic Field of the Earth, Paleomagnetismth, e Core and the Deep Mantle, Academic Press, 1996. Ogg, J.G., Magnetic polarity time scale of the Phanerozoic, in Global Earth PhysicsA, Handbooko f Physicalc onstants2, 40, 1995. Paladin, G., and A. Vulpiani, Anomalous Scaling Laws in Multifractal ObjectsP, hys.R ep., 156, 147, 1987. Seki,M ., andK . Ito, A phase-transitiomno delf or geomagnetpico larity reversalsJ, . Geomag.G eoelect.,4 5, 79, 1993.en
dc.description.obiettivoSpecifico3.4. Geomagnetismoen
dc.description.journalTypeJCR Journalen
dc.description.fulltextreserveden
dc.contributor.authorConsolini, G.en
dc.contributor.authorDe Michelis, P.en
dc.contributor.authorMeloni, A.en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
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.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia-
crisitem.author.orcid0000-0002-3403-647X-
crisitem.author.orcid0000-0002-2708-0739-
crisitem.author.orcid0000-0003-1155-401X-
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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