Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/864
DC Field | Value | Language |
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dc.contributor.authorall | De Michelis, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
dc.contributor.authorall | Consolini, G.; Istituto di Fisica dello Spazio Interplanetario - CNR, Roma, Italy | en |
dc.date.accessioned | 2006-02-22T10:38:12Z | en |
dc.date.available | 2006-02-22T10:38:12Z | en |
dc.date.issued | 2004 | en |
dc.identifier.uri | http://hdl.handle.net/2122/864 | en |
dc.description.abstract | In the field of geomagnetism a number of studies have been devoted to the investigation of turbulence and intermittency in the outer core fluid motions. Here, in order to obtain information on such phenomena we study the time spectral and self-similarity features of the main geomagnetic field fluctuations as measured on the Earth’s surface. The existence of a power law spectrum, characterised by an exponent a˜-11/3, and an anomalous scaling of q-th order structure functions on time scales longer than 5 years, suggests the occurrence of intermittent turbulence rather than classical Kolmogorov turbulence in the fluid core motions. These results are briefly discussed in connection with the existence of a strong magnetic field and drift-wave turbulence. | en |
dc.format.extent | 750381 bytes | en |
dc.format.mimetype | application/pdf | en |
dc.language.iso | English | en |
dc.publisher.name | INGV | en |
dc.relation.ispartof | Annals of Geophysics | en |
dc.relation.ispartofseries | 6/47 (2004) | en |
dc.subject | nonlinear processes in geophysics | en |
dc.subject | geomagneticfield | en |
dc.subject | Earth's core | en |
dc.subject | fluid dynamics | en |
dc.subject | turbulence | en |
dc.title | Time intermittency and spectral features of the geomagnetic field | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.subject.INGV | 04. Solid Earth::04.01. Earth Interior::04.01.99. General or miscellaneous | en |
dc.subject.INGV | 04. Solid Earth::04.05. Geomagnetism::04.05.05. Main geomagnetic field | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | open | en |
dc.contributor.author | De Michelis, P. | en |
dc.contributor.author | Consolini, G. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, 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 | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | - |
crisitem.author.dept | INAF – Istituto di Astrofisica e Planetologia Spaziali, 00133 Roma, Italy | - |
crisitem.author.orcid | 0000-0002-2708-0739 | - |
crisitem.author.orcid | 0000-0002-3403-647X | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Annals of Geophysics |
Files in This Item:
File | Description | Size | Format | |
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04DeMichelis.pdf | 732.79 kB | Adobe PDF | View/Open |
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