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Dynamics of large-amplitude geostrophic flows over bottom topography
Citation
Benilov, ES and Sakov, PV, Dynamics of large-amplitude geostrophic flows over bottom topography, Nonlinear Processes in Geophysics, 4, (1) pp. 55-62. ISSN 1023-5809 (1997) [Refereed Article]
DOI: doi:10.5194/npg-4-55-1997
Abstract
We examine the interaction of near-surface and near-bottom flows over bottom topography. A set of asymptotic equations for geostrophic currents in a three-layer fluid is derived. The depths of the active (top/bottom) layers are assumed small, the slope of the bottom is weak, the interfacial displacement is comparable to the depths of the thinner layers. Using the equations derived, we examine the stability of parallel flows and circular eddies. It is demonstrated that eddies with non-zero near-surface component are always unstable; eddies localized in the near-bottom layer may be stable subject to additional restrictions imposed on their horizontal profiles and bottom topography.
Item Details
Item Type: | Refereed Article |
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Research Division: | Mathematical Sciences |
Research Group: | Mathematical physics |
Research Field: | Mathematical physics not elsewhere classified |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the mathematical sciences |
UTAS Author: | Benilov, ES (Dr Eugene Benilov) |
UTAS Author: | Sakov, PV (Mr Pavel Sakov) |
ID Code: | 11505 |
Year Published: | 1997 |
Web of Science® Times Cited: | 1 |
Deposited By: | Mathematics |
Deposited On: | 1997-08-01 |
Last Modified: | 2011-08-12 |
Downloads: | 0 |
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