Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/3916| DC Field | Value | Language |
|---|---|---|
| dc.contributor.authorall | Consolini, G.; Istituto di Fisica dello Spazio Interplanetario, CNR, I-00133 Roma, Italy | en |
| dc.contributor.authorall | De Michelis, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
| dc.contributor.authorall | Meloni, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia | en |
| dc.date.accessioned | 2008-07-01T13:07:45Z | en |
| dc.date.available | 2008-07-01T13:07:45Z | en |
| dc.date.issued | 2002 | en |
| dc.identifier.uri | http://hdl.handle.net/2122/3916 | en |
| dc.description.abstract | The aim of this work is to investigate the time spectral features of the main geomagnetic field fluctuations as measured on the Earth’s surface in connection with a nontraditional turbulent dynamics of the fluid motions in the outer layers of the Earth’s liquid core. The average geomagnetic field spectrum is found to be a power law, characterized by a spectral exponent α≈−11/3, on time scales longer than 5 yr. We discuss the spectral exponent in connection with an intense magnetic field in the Earth’s core and with a vortex coalescence process in a regime of drift-wave turbulence. | en |
| dc.language.iso | English | en |
| dc.publisher.name | The American Physical Society | en |
| dc.relation.ispartof | Physical Review E | en |
| dc.relation.ispartofseries | 3 / 65 (2002) | en |
| dc.subject | Geomagnetism | en |
| dc.subject | Secular variation | en |
| dc.subject | Earth's core | en |
| dc.title | Fluid motions in the Earth’s core inferred from time spectral features of the geomagnetic field | en |
| dc.type | article | en |
| dc.description.status | Published | en |
| dc.type.QualityControl | Peer-reviewed | en |
| dc.description.pagenumber | 037303 | en |
| dc.subject.INGV | 04. Solid Earth::04.01. Earth Interior::04.01.03. Mantle and Core dynamics | en |
| dc.subject.INGV | 04. Solid Earth::04.05. Geomagnetism::04.05.01. Dynamo theory | en |
| dc.subject.INGV | 04. Solid Earth::04.05. Geomagnetism::04.05.05. Main geomagnetic field | en |
| dc.identifier.doi | 10.1103/PhysRevE.65.037303 | en |
| dc.relation.references | @1# R. T. Merril, M. W. McElhinny, and P. L. McFadden, The Magnetic Field of the Earth, Paleomagnetism, the Core, and the Deep Mantle ~Academic Press, New York, 1996!. @2# J. Bloxham and A. Jackson, Rev. Geophys. 29, 97 ~1991!. @3# P. H. Roberts and S. Scott, J. Geomagn. Geoelectr. 17, 137 ~1965!. @4# G. Backus, R. Parker, and C. Constable, Foundations of Geomagnetism ~Cambridge University Press, Cambridge, England, 1996!. @5# The Summary of Annual Mean Values of Magnetic Elements at World Magnetic Observatories, edited by V. P. Golovkov, G. I. Kolomijtzeva, L. P. Konyashenko, and G. M. Semyonova ~Academy of Sciences of the USSR, Moscow, 1983!, Issue XVI. @6# W. D. Parkinson, Introduction to Geomagnetism ~Academic Press, New York, 1983!. @7# C. E. Barton, Philos. Trans. R. Soc. London, Ser. A 306, 203 ~1982!. @8# C. E. Barton, Geophys. Surv. 5, 335 ~1983!. @9# R. G. Roberts, Geophys. Surv. 8, 339 ~1986!. @10# V. Courtillot and J. L. Le Moue¨l, Annu. Rev. Earth Planet Sci. 16, 389 ~1988!. @11# J. H. Filloux, J. Geomagn. Geoelectr. 32, 1 ~1980!. @12# S. I. Braginsky and V. P. Meytlis, Geophys. Astrophys. Fluid Dyn. 55, 71 ~1990!. @13# H. Branover, A. Eidelman, E. Golbraikh, and S. Moiseev, Turbulence and Structures ~Academic Press, London, 1999!. @14# N. Kukharkin, S. A. Orsrag, and V. Yakhot, Phys. Rev. Lett. 75, 2486 ~1995!; D. del Castillo-Negrete, Phys. Plasmas 7, 1702 ~2000!. @15# P. De Michelis, G. Consolini, and A. Meloni, Phys. Rev. Lett. 81, 5023 ~1998!. @16# Z. Vo¨ro¨s and J. C. Gianibelli, Contrib. Geophys. Geodesy 28, 277 ~1998!. | en |
| dc.description.obiettivoSpecifico | 3.4. Geomagnetismo | en |
| dc.description.journalType | JCR Journal | en |
| dc.description.fulltext | reserved | en |
| dc.contributor.author | Consolini, G. | en |
| dc.contributor.author | De Michelis, P. | en |
| dc.contributor.author | Meloni, 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 |
| 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 | 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 | 0000-0002-2708-0739 | - |
| crisitem.author.orcid | 0000-0003-1155-401X | - |
| 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.classification.parent | 04. Solid Earth | - |
| crisitem.classification.parent | 04. Solid Earth | - |
| 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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