Physics – Fluid Dynamics
Scientific paper
Mar 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994gapfd..74...99z&link_type=abstract
Geophysical and Astrophysical Fluid Dynamics, vol. 74, Issue 1, pp.99-122
Physics
Fluid Dynamics
1
Bottom Topography, Rossby Waves
Scientific paper
The formation of a steady quasi-geostrophic flow component over undulating bottom variations is analysed in the case when wave-topography interactions dominate over nonlinear wave-wave couplings. A low-order model is proposed to describe quasi-linear dynamics and our main attention focusses on the qualitative structures of two functions: the correlation between relative vorticity and topography (C) and a topographic stress force (D). C turns out to be both positive and negative depending on the parameters of an incident wave and topography mode, and on the dissipation mechanism taken into account. The -effect increases C and isotropy of the dynamical wavy field or that of the topography decreases this quantity.
Zhikharev Gregory M.
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