Multiple jet formation in a convectively driven flow on a beta-plane
| Autor: | Read, Peter, Yamazaki, Hiro Yashuhiro, Lewis, Stephen, Williams, Paul, Miki-Yamazaki, Kuniko, Sommeria, Joël, Didelle, Henri, Fincham, Adam |
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| Přispěvatelé: | Clarendon Laboratory [Oxford], University of Oxford [Oxford], Laboratoire des Écoulements Géophysiques et Industriels [Grenoble] (LEGI), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), Correspondant HAL 2, LEGI |
| Jazyk: | angličtina |
| Rok vydání: | 2004 |
| Předmět: |
Physics::Fluid Dynamics
[PHYS.MECA.MEFL] Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] [SPI.MECA.MEFL] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] Physics::Atmospheric and Oceanic Physics Physics::Geophysics [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] |
| Zdroj: | XXI International Congress of Theoretical and Applied Mechanics XXI International Congress of Theoretical and Applied Mechanics, Aug 2004, Warsaw, Poland |
| Popis: | International audience; We present results from laboratory experiments carried out on the Coriolis rotating platform in Grenoble, France, to investigate the influence of a topographic beta-plane (obtained via a sloping bottom) on convectively-driven geostrophic turbulence. Dense, salty water is sprayed continuously onto the surface of the tank, which leads to the formation of a field of convective vortices. In the presence of a sloping bottom, the vortices interact nonlinearly, leading to the formation of a series of quasi-steady, parallel azimuthal jets on a scale comparable with the so-called Rhines scale LR = π 2U/β. Such jets are not found with a flat bottom. Implications will be discussed in the context of various geophysical problems, including the atmospheres of the outer planets and the Earth's oceans. |
| Databáze: | OpenAIRE |
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