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| Titel |
Jupiter's Great Red Spot: compactness condition and stability |
| VerfasserIn |
Jun-Ichi Yano, Glenn R. Flierl |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 12, no. 1 ; Nr. 12, no. 1, S.1-18 |
| Datensatznummer |
250010389
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| Publikation (Nr.) |
 copernicus.org/angeo-12-1-1994.pdf |
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| Zusammenfassung |
| Linear Rossby wave dispersion relationships
suggest that Jupiter's Great Red Spot (GRS) is a baroclinic structure embedded
in a barotropic shearing zonal flow. Quasi-geostrophic (QG) two-layer
simulations support the theory, as long as an infinitely deep zonal flow is
assumed. However, once a finite depth of the lower layer is assumed, a
self-interaction of the baroclinic eddy component produces a barotropic
radiating field, so that the GRS-like eddy can no longer remain compact.
Compactness is recovered by explicitly introducing a deep dynamics of the
interior for the lower layer, instead of the shallow QG formulation. An
implication of the result is a strong coupling of the GRS to a convectively
active interior. |
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