Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/5237
DC Field | Value | Language |
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dc.contributor.authorall | Consolini, G.; INAF – Istituto di Fisica dello Spazio Interplanetario, 00133 Roma, Italy | en |
dc.contributor.authorall | Tozzi, R.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
dc.contributor.authorall | De Michelis, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia | en |
dc.date.accessioned | 2009-11-10T13:42:50Z | en |
dc.date.available | 2009-11-10T13:42:50Z | en |
dc.date.issued | 2009-11-03 | en |
dc.identifier.uri | http://hdl.handle.net/2122/5237 | en |
dc.description.abstract | The occurrence of complexity in the solar cycle, as monitored by the sunspot area butterfly diagram, is investigated by means of the natural orthogonal composition (NOC) technique and information theory approach. Although the butterfly diagram may be reconstructed using only two modes as already found in other papers for the Hale cycle, on deeper investigation it is possible to notice that the high variability, complexity, and stochasticity observed during the solar cycle are missing. A full description of the complex evolution of the solar cycle requires at least 30 modes. We show that these modes identify two different dynamical regimes, whose existence is also confirmed by the analysis of the Lyapunov exponents of the associated principal components. We suggest that the existence of these two physical dynamical regimes is at the origin of the dynamical complexity of the solar cycle. We attempt a discussion of these dynamical regimes also in terms of a nearly stable dynamo process described by the first two modes and a local superficial turbulent dynamo responsible for the more stochastic features observed in the solar cycle. | en |
dc.language.iso | English | en |
dc.publisher.name | EDP Sciences | en |
dc.relation.ispartof | Astronomy & Astrophysics | en |
dc.relation.ispartofseries | / 506 (2009) | en |
dc.subject | Sun: activity | en |
dc.subject | Sun: sunspots | en |
dc.subject | methods: statistical | en |
dc.subject | chaos | en |
dc.title | Complexity in the sunspot cycle | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 1381-1391 | en |
dc.subject.INGV | 01. Atmosphere::01.03. Magnetosphere::01.03.05. Solar variability and solar wind | en |
dc.subject.INGV | 05. General::05.07. Space and Planetary sciences::05.07.99. General or miscellaneous | en |
dc.identifier.doi | 10.1051/0004-6361/200811074 | en |
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dc.description.obiettivoSpecifico | 3.9. Fisica della magnetosfera, ionosfera e meteorologia spaziale | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | open | en |
dc.contributor.author | Consolini, G. | en |
dc.contributor.author | Tozzi, R. | en |
dc.contributor.author | De Michelis, P. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione ONT, Roma, Italia | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | INAF – Istituto di Astrofisica e Planetologia Spaziali, 00133 Roma, Italy | - |
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.orcid | 0000-0002-3403-647X | - |
crisitem.author.orcid | 0000-0002-1836-4078 | - |
crisitem.author.orcid | 0000-0002-2708-0739 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 01. Atmosphere | - |
crisitem.classification.parent | 05. General | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
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aa11074-08-consolini.pdf | main article | 689.98 kB | Adobe PDF | View/Open |
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