Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/1347
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dc.contributor.authorallGregori, G. P.; Istituto di Fisica dell’Atmosfera (IFA-CNR), Roma, Italy; and World Laboratory, Lausanne, Switzerlanden
dc.contributor.authorallDong, W. J.; World Laboratory Scholarship, c/o IFA (CNR), Roma, Italyen
dc.contributor.authorallGao, X. Q.; World Laboratory Scholarship, c/o IFA (CNR), Roma, Italyen
dc.contributor.authorallGizzi, F. T.; European Commission Scholarship, c/o IFA (CNR), Roma, Italyen
dc.date.accessioned2006-07-26T12:36:07Zen
dc.date.available2006-07-26T12:36:07Zen
dc.date.issued1999-04en
dc.identifier.urihttp://hdl.handle.net/2122/1347en
dc.description.abstractThe 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.extent6517566 bytesen
dc.format.mimetypeapplication/pdfen
dc.language.isoEnglishen
dc.relation.ispartofseries2/42 (1999)en
dc.subjectdynamoen
dc.subjectspatial spectrumen
dc.subjectwhite spectrumen
dc.subjectLowes’lawen
dc.subjectNevanlinna’s lawen
dc.subjectHamilton’s principleen
dc.subjectgeomagnetic anomaliesen
dc.subjectinner coreen
dc.subjectouter coreen
dc.subjectasthenosphereen
dc.titleThe separation of the geomagnetic field originated in the core, in the asthenosphere, and in the crusten
dc.typearticleen
dc.type.QualityControlPeer-revieweden
dc.subject.INGV04. Solid Earth::04.05. Geomagnetism::04.05.01. Dynamo theoryen
dc.description.journalTypeJCR Journalen
dc.description.fulltextopenen
dc.contributor.authorGregori, G. P.en
dc.contributor.authorDong, W. J.en
dc.contributor.authorGao, X. Q.en
dc.contributor.authorGizzi, F. T.en
dc.contributor.departmentIstituto di Fisica dell’Atmosfera (IFA-CNR), Roma, Italy; and World Laboratory, Lausanne, Switzerlanden
dc.contributor.departmentWorld Laboratory Scholarship, c/o IFA (CNR), Roma, Italyen
dc.contributor.departmentWorld Laboratory Scholarship, c/o IFA (CNR), Roma, Italyen
dc.contributor.departmentEuropean Commission Scholarship, c/o IFA (CNR), Roma, Italyen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptIstituto di Fisica dell'Atmosfera (I.F.A.- C.N.R.), Roma, Italy-
crisitem.author.deptWorld Laboratory Scholarship, c/o IFA (CNR), Roma, Italy-
crisitem.author.deptWorld Laboratory Scholarship, c/o IFA (CNR), Roma, Italy-
crisitem.author.deptInstitute of Archaeological and Monumental Heritage, National Research Council (IBAM-CNR), Potenza, Italy-
crisitem.author.orcid0000-0002-8966-0683-
crisitem.classification.parent04. Solid Earth-
Appears in Collections:Annals of Geophysics
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