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Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/8683
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dc.contributor.authorallDe Santis, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.contributor.authorallQamili, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.contributor.authorallCianchini, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.date.accessioned2013-05-07T06:53:37Zen
dc.date.available2013-05-07T06:53:37Zen
dc.date.issued2013-04-18en
dc.identifier.urihttp://hdl.handle.net/2122/8683en
dc.description.abstractThe present geomagnetic field is chaotic and ergodic: chaotic because it can no longer be predicted beyond around 6 years; and ergodic in the sense that time averages correspond to phase-space averages. These properties have already been deduced from complex analyses of observatory time series in a reconstructed phase space [Barraclough and De Santis 1997] and from global predicted and definitive models of differences in the time domain [De Santis et al. 2011]. These results imply that there is a strong necessity to make repeat-station magnetic surveys more frequently than every 5 years. This, in turn, will also improve the geomagnetic field secular variation models. This report provides practical examples and case studies.en
dc.language.isoEnglishen
dc.publisher.nameINGVen
dc.relation.ispartofAnnals of Geophysicsen
dc.relation.ispartofseries1 / 56 (2013)en
dc.subjectGeomagnetic fielden
dc.subjectRepeat Stationsen
dc.subjectErgodicityen
dc.subjectChaosen
dc.titleRepeat-station surveys: implications from chaos and ergodicity of the recent geomagnetic fielden
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumberR0103en
dc.subject.INGV04. Solid Earth::04.05. Geomagnetism::04.05.03. Global and regional modelsen
dc.subject.INGV04. Solid Earth::04.05. Geomagnetism::04.05.05. Main geomagnetic fielden
dc.subject.INGV04. Solid Earth::04.05. Geomagnetism::04.05.08. Instruments and techniquesen
dc.subject.INGV05. General::05.01. Computational geophysics::05.01.04. Statistical analysisen
dc.subject.INGV05. General::05.05. Mathematical geophysics::05.05.99. General or miscellaneousen
dc.identifier.doi10.4401/ag-5491en
dc.relation.referencesBalasis G., I.A. Daglis, A. Anastasiadis and K. Eftaxias (2010). Investigating magnetospheric dynamics using various complexity measures, AIP Conf. Proc., 1320, 65-71. Barraclough, D.R., and A. De Santis (1997). Some possible evidence for a chaotic geomagnetic field from observational data, Phys. Earth Plan. Inter., 99, 207-220. Barraclough, D.R., and A. De Santis (2011). Repeat Stations Activities, In: M. Korte and M. Mandea (eds.), Geomagnetic Observations and Models, Springer, 45-55. De Santis, A., D.R. Barraclough and R. Tozzi (2002). Nonlinear variability in the geomagnetic secular variation of the last 150 years, Fractals, 10, 297-303. De Santis, A., and E. Qamili (2010). Shannon information of the geomagnetic field for the past 7000 years, Nonlinear Proc. Geoph., 17, 77-84. De Santis, A., G. Cianchini, E. Qamili and A. Frepoli (2010). The 2009 L'Aquila (central Italy) seismic sequence as a chaotic process, Tectonophysics, 496, 44-52. De Santis, A., E. Qamili and G. Cianchini (2011). Ergodicity of the recent geomagnetic field, Phys. Earth Plan. Inter, 186, 103-110. Duka, B., A. De Santis, M. Mandea, A. Isac and E. Qamili (2012). Geomagnetic jerks characterization via spectral analysis, Solid Earth, 3, 131-148. Eckmann, J.P., and D. Ruelle (1985). Ergodic theory of chaos and strange attractors, Rev. Mod. Phys., 57, 617-656. McEwin, A.J. (1993). The repeat station network and estimation of secular variation in the Australian region, Explor. Geophys., 24, 87-88. Meloni, A., O. Battelli, A. De Santis and G. Dominici (1994). The 1990.0 magnetic repeat station survey and normal reference fields for Italy, Annals of Geophysics, 37 (5), 949-967. Newitt, L.R., C.E. Barton and J. Bitterly (1996). Guide for Magnetic Repeat Station Surveys, International Association of Geomagnetism and Aeronomy, 129 pp. Sabaka, T.J., N. Olsen and M.E. Purucker (2004). Extending comprehensive models of the Earth's magnetic field with Ørsted and CHAMP data, Geophys. J. Int., 159, 521-547. Schuster, H.G., and W. Just (2005). Deterministic Chaos: an Introduction (4th ed.), Wiley-VCH, Weinheim, 287 pp. Shen, W., C. Fang and D. Zhang (2009). Fractal and chaos research of geomagnetic polarity reversal, Earth Sc. Frontiers, 16, 201-206. Sugihara, G., and R.M. May (1990). Nonlinear forecasting as a way to distinguish chaos from measurement error in time series, Nature, 344, 734-741. Takens, F. (1981). Detecting strange attractors in turbulence, In: D.A. Rand and L.S. Young (eds.), Lecture Notes in Mathematics, 898, Springer, Berlin, 366 pp. Tiampo, K.F., J.B. Rundle, W. Klein, J. Holliday, J.S. Sa' Martins and C.D. Ferguson (2007). Ergodicity in natural earthquake fault networks, Phys. Rev. E, 75, 1-15. Vincent, U.E. (2005). Synchronization of Rikitake chaotic attractor using active control, Physics Lett. A, 343, 133-138. Wales, D.J. (1991). Calculating the rate of loss information from chaotic time series by forecasting, Nature, 350, 485-488. Walters, P. (1982). An Introduction to Ergodic Theory, Springer, New York.en
dc.description.obiettivoSpecifico3.4. Geomagnetismoen
dc.description.journalTypeJCR Journalen
dc.description.fulltextopenen
dc.relation.issn1593-5213en
dc.contributor.authorDe Santis, A.en
dc.contributor.authorQamili, E.en
dc.contributor.authorCianchini, G.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
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, 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.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.orcid0000-0002-3941-656X-
crisitem.author.orcid0000-0003-2832-0068-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent05. General-
crisitem.classification.parent05. General-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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