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ELIASSEN, ARNT (2011)
Publisher: Co-Action Publishing
Journal: Tellus A
Languages: English
Types: Article
Subjects:

Classified by OpenAIRE into

arxiv: Physics::Fluid Dynamics
The topographically bound, balanced motion of an incompressible, inviscid, and stratified fluid on the f-plane is studied. The potential vorticity of the fluid is specified as a positive function of its density. For an infinite, straight bottom ridge, it is shown that a solution with constant density along the entire bottom surface is possible only when the crest height is less than a critical value, which depends on the shape of the ridge profile and on its width in comparison with the deformation radius. If the crest height exceeds the critical value, the upper part of the ridge must protrude into less dense layers above, disrupting the lowest isopycnic surfaces. The critical crest height is calculated for certain simple ridge profiles. The situation seems to be qualitatively similar for a circular bottom topography. In this case, the critical summit height must be determined from the non-linear gradient wind equation, since the geostrophic approximation fails when the critical height is approached. Although no explicit expression for the critical height is offered, it seems plausible that its value will be smaller than for a ridge of similar profile.DOI: 10.1111/j.2153-3490.1980.tb00979.x
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • Bleck, R. 1973. Numerical forecasting experiments based on the conservation of potential vorticity on isentropic surfaces. J. Appl. Meteorol. 12, 737-152.
    • Bleck, R. 1974. Short-range prediction in isentropic coordinates with filtered and unfiltered numerical models. Mon. Wea.Reo. 102,813-829.
    • Buzzi, A. and Speranza, A. 1979. Stationary flow of a quasi-geostrophic, stratified atmosphere past finite amplitude obstacles. Tellus 31, 1-1 2.
    • Charney, J. G. 1973. Planetary fluid dynamics. In Dynamic meteorology (ed. P. Morel). Dordrecht: D. Reidel Publ. Co., 97-352.
    • Charney, J. G. and Phillips, N. A. 1953. Numerical integration of the quasi-gmstrophic equations for barotropic and simple baroclinic flows. J. Meteor. 10, 7 1-99.
    • Huppert, H. E. 1975. Some remarks on the initiation of inertial Taylor columns. J . Fluid Mech. 67,397-412.
    • Huppert, H. E. and Bryan, K. 1976. Topographically generated eddies. Deep Sea Res. 23,655-679.
    • Merkine, L.-0.Steady finite-amplitude baroclinic flow over long topography in a rotating stratified atmosphere. J. Atmos. Sci. 32, 1881-1893.
    • Merkine, L.-0.and Kilnay-Rivas, E. 1976. Rotating stratified flow over finite isolated topography. J. A m o s . Sci. 33,908-922.
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