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http://hdl.handle.net/2122/8684
DC Field | Value | Language |
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dc.contributor.authorall | Qamili, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
dc.contributor.authorall | De Santis, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
dc.contributor.authorall | Isac, A.; Geological Institute of Romania, Bucharest, Romania | en |
dc.contributor.authorall | Mandea, M.; Centre National d’Etudes Spatiales, Paris, France | en |
dc.contributor.authorall | Duka, B.; Faculty of Natural Sciences, University of Tirana, Tirana, Albania | en |
dc.contributor.authorall | Simonyan, A.; Institute of Geophysics, Academy of Science, Yerevan, Armenia | en |
dc.date.accessioned | 2013-05-07T06:55:50Z | en |
dc.date.available | 2013-05-07T06:55:50Z | en |
dc.date.issued | 2013-04-12 | en |
dc.identifier.uri | http://hdl.handle.net/2122/8684 | en |
dc.description.abstract | The geomagnetic field is chaotic and can be characterized by a mean exponential time scale<t>after which it is no longer predictable. It is also ergodic, so time analyses can substitute the more difficult phase space analyses. Taking advantage of these two properties of the Earth’s magnetic field, a scheme of processing global geomagnetic models in time is presented, to estimate fluctuations of the time scale t. Here considering that the capability to predict the geomagnetic field is reduced over periods of geomagnetic jerks, we propose a method to detect these events over a long time span. This approach considers that epochs characterized by relative minima of fluctuations in time scale t, i.e., those periods when a geomagnetic field is less predictable, are possible jerk occurrence dates. We analyze the last 400 years of the geomagnetic field (covered by the Gufm1 model) to detect minima of fluctuations, i.e., epochs characterized by low values of the time scale.Most of the well known jerks are confirmed through this method and a few others have been suggested. Finally, we also identify some short periods when the field is less chaotic (more predictable) than usual, naming these periods as steady state geomagnetic regime, to underline their opposite behavior with respect to jerks. | en |
dc.language.iso | English | en |
dc.publisher.name | American Geophysical Union | en |
dc.relation.ispartof | Geochemistry, Geophysics, Geosystems | en |
dc.relation.ispartofseries | / 14 (2013) | en |
dc.subject | geomagnetic field | en |
dc.subject | geomagnetic jerks | en |
dc.subject | ergodicity | en |
dc.subject | chaos | en |
dc.title | Geomagnetic jerks as chaotic fluctuations of the Earth’s magnetic field | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 839–850 | en |
dc.subject.INGV | 04. Solid Earth::04.05. Geomagnetism::04.05.02. Geomagnetic field variations and reversals | en |
dc.identifier.doi | 10.1029/2012GC004398 | en |
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dc.description.obiettivoSpecifico | 3.4. Geomagnetismo | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | restricted | en |
dc.relation.eissn | 1525-2027 | en |
dc.contributor.author | Qamili, E. | en |
dc.contributor.author | De Santis, A. | en |
dc.contributor.author | Isac, A. | en |
dc.contributor.author | Mandea, M. | en |
dc.contributor.author | Duka, B. | en |
dc.contributor.author | Simonyan, A. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
dc.contributor.department | Geological Institute of Romania, Bucharest, Romania | en |
dc.contributor.department | Centre National d’Etudes Spatiales, Paris, France | en |
dc.contributor.department | Faculty of Natural Sciences, University of Tirana, Tirana, Albania | en |
dc.contributor.department | Institute of Geophysics, Academy of Science, Yerevan, Armenia | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | restricted | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | - |
crisitem.author.dept | Geological Institute of Romania, Bucharest, Romania | - |
crisitem.author.dept | Institut de Physique du Globe de Paris-IPGP, Université Paris-Diderot & CNRS, 5 rue Thomas Mann,75205 Paris, France | - |
crisitem.author.dept | Department of Physics, Faculty of Natural Sciences, University of Tirana, Albania | - |
crisitem.author.dept | Institute of Geophysics, Academy of Science, Yerevan, Armenia | - |
crisitem.author.orcid | 0000-0002-3941-656X | - |
crisitem.author.orcid | 0000-0002-2014-1316 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
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