Abstract
Density-driven benthic flows are important in the dynamics of marginal seas, river estuaries and other coastal regions (LeBlond et al., 1991; Price & O’Neil Baringer, 1994). They often occur along sloping continental shelves, flowing with shallower water on their right (in the northern hemisphere). Mesoscale gravity currents, which are to be discussed in this study, arise from a geostrophic balance between down-slope acceleration due to gravity and the Coriolis force, while their dynamics is characterized by lengthscales on the order of the Rossby deformation radius. There is mounting evidence that such flows are subject to instability, which may drastically alter the mean flow and culminate in a series of isolated plumes or eddies (Armi & D’Asaro, 1980; Houghton et al., 1982).
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References
Armi, L. & D’Asaro, E. (1980) Flow structures of the benthic ocean. J. Geophys. Res. 85, 469–484.
Bruce, J. G. (1995) Eddies southwest of the Denmark Strait. Deep-Sea Research 42, 13–29.
Houghton, R. W., Schlitz, R, Beardsley, R C., Butman, B. & Chamberlin, J. L. (1982) The Middle Atlantic Bight Cold Pool: Evolution of the Temperature Structure During Summer 1979. J. Phys. Oceanogr. 12, 1019–1029.
Jiang, L. & Garwood Jr., R. W. (1995) A numerical study of three-dimensional dense bottom plumes on a Southern Ocean continental slope. J. Geophys. Res. 100, 18,47118,488.
Karsten, R. H., Swaters, G. E. & Thomson, R. E. (1995) Stability Characteristics of Deep-Water Replacement in the Strait of Georgia. J. Phys. Oceanogr. 25, 2391–2403.
LeBlond, P. H., Ma, H., Doherty, F. & Pond, S. (1991) Deep and Intermediate Water Replacement in the Strait of Georgia. Atmos. Ocean 29, 288–312.
Poulin, F. J. & Swaters, G. E. (1999) Sub-inertial dynamics of density-driven flows in a continuously stratified fluid on a sloping bottom. I. Model derivation and stability characteristics. Proc. R. Soc. Lond. A 455, 2281–2304.
Price, J. F. & O’Neil Baringer, M. (1994) Outflows and deep water production by marginal seas. Prog. Oceanog. 33, 161–200.
Reszka, M. K. & Swaters, G. E. (2000) Baroclinic instability of benthic currents in a continuously stratified ocean. Submitted to Can. App. Math. Quart.
Smith, P. C. (1975) A streamtube model for bottom boundary currents in the ocean. Deep-Sea Res. 22, 853–873.
Stacey, J.W., Pond, S. & LeBlond, P. H. (1988) An objective analysis of the low-frequency currents in the Strait of Georgia. Atmos. Ocean 26, 1–15.
Swaters, G. E. (1991) On the baroclinic instability of cold-core coupled density fronts on a sloping continental shelf. J. Fluid Mech. 224, 361–382.
Swaters, G. E. (1998) Numerical simulations of the baroclinic dynamics of density-driven coupled fronts and eddies on a sloping bottom. J. Geophys. Res. 103, 2945–2961.
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© 2001 Springer Science+Business Media Dordrecht
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Reszka, M.K., Swaters, G.E. (2001). Baroclinic Instability of Bottom-Dwelling Currents. In: Hodnett, P.F. (eds) IUTAM Symposium on Advances in Mathematical Modelling of Atmosphere and Ocean Dynamics. Fluid Mechanics and Its Applications, vol 61. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0792-4_27
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DOI: https://doi.org/10.1007/978-94-010-0792-4_27
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