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| Titel |
Remarks on rotating shallow-water magnetohydrodynamics |
| VerfasserIn |
V. Zeitlin |
| 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 ; 20, no. 5 ; Nr. 20, no. 5 (2013-10-29), S.893-898 |
| Datensatznummer |
250086064
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| Publikation (Nr.) |
 copernicus.org/npg-20-893-2013.pdf |
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| Zusammenfassung |
| We show how the rotating shallow-water MHD model, which was proposed in the
solar tachocline context, may be systematically derived by vertical averaging
of the full MHD equations for the rotating magneto fluid under the influence
of gravity. The procedure highlights the main approximations and the domain
of validity of the model, and allows for multi-layer generalizations and,
hence, inclusion of the baroclinic effects. A quasi-geostrophic version of the
model, both in barotropic and in baroclinic cases, is derived in the limit of
strong rotation. The basic properties of the model(s) are sketched, including
the stabilizing role of magnetic fields in the baroclinic version. |
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