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| Titel |
Finite amplitudes helical waves on the surface of the conducting fluid earth core as an example of the self-exciting homopolar heterogeneous dynamo |
| VerfasserIn |
V. V. Glazkov, O. A. Sinkevich |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 13, no. 6 ; Nr. 13, no. 6 (2006-11-01), S.595-599 |
| Datensatznummer |
250011868
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| Publikation (Nr.) |
 copernicus.org/npg-13-595-2006.pdf |
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| Zusammenfassung |
| Helical waves of the finite amplitude on a surface of the fluid conducting
Earth core are examined for generation of the magnetic field. Estimates are
made for the differentially rotating cylindrical conducting fluid body, with
the helical surface wave structure on its top. This structure is similar to
the self-exciting Faraday-disk homopolar heterogeneous dynamo. Estimations
of angular velocity and magnetic field magnitude for a polar vortex on the
surface of the Earth's liquid outer core gives reasonable numbers and proves
this hypothesis to be of value for further detailed analysis. As magnetic
field generation by the helical structure is a surface effect, it is
possible to find connection between Earth magnetic field fluctuations and
fast relief changes on the iron fluid core – the silicate mantle boundary
of the Earth. |
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