Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/1347
DC Field | Value | Language |
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dc.contributor.authorall | Gregori, G. P.; Istituto di Fisica dell’Atmosfera (IFA-CNR), Roma, Italy; and World Laboratory, Lausanne, Switzerland | en |
dc.contributor.authorall | Dong, W. J.; World Laboratory Scholarship, c/o IFA (CNR), Roma, Italy | en |
dc.contributor.authorall | Gao, X. Q.; World Laboratory Scholarship, c/o IFA (CNR), Roma, Italy | en |
dc.contributor.authorall | Gizzi, F. T.; European Commission Scholarship, c/o IFA (CNR), Roma, Italy | en |
dc.date.accessioned | 2006-07-26T12:36:07Z | en |
dc.date.available | 2006-07-26T12:36:07Z | en |
dc.date.issued | 1999-04 | en |
dc.identifier.uri | http://hdl.handle.net/2122/1347 | en |
dc.description.abstract | The separation of the field produced by different internal sources can be accomplished by means of the so-called spatial spectrum of the geomagnetic field of internal origin. It is shown how such a rationale, when suitably interpreted, allows to recognize the field that is originated by electric currents that flow either on the Inner-Core Boundary (ICB), or on the Core-Mantle Boundary (CMB), or on the Asthenosphere-Lithosphere Boundary (ALB). It appears crucial, however, to rely on satellite measurements alone, because ground-based and ship- and air-borne records are severely perturbed by the crustal field. Therefore, it is shown, on the basis of a critical reconsideration of a few key-papers in the literature, that the best approach is to avoid mixing together all kinds of measurements. Satellite data are best suited for recognizing the dynamo field, while ground-based, ship- and air-borne records, which are measured much closer to crustal sources, are best suited, after subtraction of the satellite-derived dynamo field, for inferring the geomagnetic anomalies that are to be associated with crustal sources alone. | en |
dc.format.extent | 6517566 bytes | en |
dc.format.mimetype | application/pdf | en |
dc.language.iso | English | en |
dc.relation.ispartofseries | 2/42 (1999) | en |
dc.subject | dynamo | en |
dc.subject | spatial spectrum | en |
dc.subject | white spectrum | en |
dc.subject | Lowes’law | en |
dc.subject | Nevanlinna’s law | en |
dc.subject | Hamilton’s principle | en |
dc.subject | geomagnetic anomalies | en |
dc.subject | inner core | en |
dc.subject | outer core | en |
dc.subject | asthenosphere | en |
dc.title | The separation of the geomagnetic field originated in the core, in the asthenosphere, and in the crust | en |
dc.type | article | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.subject.INGV | 04. Solid Earth::04.05. Geomagnetism::04.05.01. Dynamo theory | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | open | en |
dc.contributor.author | Gregori, G. P. | en |
dc.contributor.author | Dong, W. J. | en |
dc.contributor.author | Gao, X. Q. | en |
dc.contributor.author | Gizzi, F. T. | en |
dc.contributor.department | Istituto di Fisica dell’Atmosfera (IFA-CNR), Roma, Italy; and World Laboratory, Lausanne, Switzerland | en |
dc.contributor.department | World Laboratory Scholarship, c/o IFA (CNR), Roma, Italy | en |
dc.contributor.department | World Laboratory Scholarship, c/o IFA (CNR), Roma, Italy | en |
dc.contributor.department | European Commission Scholarship, c/o IFA (CNR), Roma, Italy | 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 di Fisica dell'Atmosfera (I.F.A.- C.N.R.), Roma, Italy | - |
crisitem.author.dept | World Laboratory Scholarship, c/o IFA (CNR), Roma, Italy | - |
crisitem.author.dept | World Laboratory Scholarship, c/o IFA (CNR), Roma, Italy | - |
crisitem.author.dept | Institute of Archaeological and Monumental Heritage, National Research Council (IBAM-CNR), Potenza, Italy | - |
crisitem.author.orcid | 0000-0002-8966-0683 | - |
crisitem.classification.parent | 04. Solid Earth | - |
Appears in Collections: | Annals of Geophysics |
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05 gregori.pdf | 6.36 MB | Adobe PDF | View/Open |
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