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| Titel |
Rossby-wave turbulence in a rapidly rotating sphere |
| VerfasserIn |
N. Schaeffer, P. Cardin |
| 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 ; 12, no. 6 ; Nr. 12, no. 6 (2005-11-04), S.947-953 |
| Datensatznummer |
250010897
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| Publikation (Nr.) |
 copernicus.org/npg-12-947-2005.pdf |
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| Zusammenfassung |
We use a quasi-geostrophic numerical model to study the turbulence of
rotating flows in a sphere, with realistic Ekman friction and bulk viscous dissipation.
The forcing is caused by the destabilization of an axisymmetric Stewartson shear layer,
generated by differential rotation, resulting in a forcing at rather large scales.
The equilibrium regime is strongly anisotropic and inhomogeneous but exhibits
a steep m-5 spectrum in the azimuthal (periodic) direction, at scales
smaller than the injection scale. This spectrum has been proposed by Rhines
for a Rossby wave turbulence. For some parameter range, we observe a
turbulent flow dominated by a large scale vortex located in the shear layer,
reminding us of the Great Red Spot of Jupiter. |
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