Primitive-equation instability of wide oceanic rings. Part II: Numerical studies of ring stability

Journal of Physical Oceanography

Volumn 29, Issue 8 PART 1, 1999, Pages 1744-1758

  Dewar, William K ^a   Killworth, Peter D ^b   Blundell, Jeffrey R ^b  

^a FLORIDA STATE UNIVERSITY   (United States)

^b NATIONAL OCEANOGRAPHY CENTRE   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

BAROTROPIC MODE; CURRENT RING; INSTABILITY; OCEANIC CIRCULATION;

EID: 0033399445     PISSN: 00223670     EISSN: None     Source Type: Journal    
DOI: 10.1175/1520-0485(1999)029<1744:peiowo>2.0.co;2     Document Type: Article

References (23)

1. Benilov, E., D. Broutman, and E. Kuznetsova, 1997: On the stability of large-amplitude vortices in a continuously stratified fluid on the f-plane, J. Fluid Mech., 355, 139-162.
2. Bleck, R., and E. P. Chassignet, 1994: Simulating the oceanic circulation with isopycnic-coordinate models. The Oceans: Physical-Chemical Dynamics and Human Impact, S. K. Majumdar. E. W. Miller, G. S. Forbes, R. F. Schmalz, and A. A. Panah, Eds., The Pennsylvania Academy of Science, 17-39.
3. Brown, O. B., P. C. Cornillon, S. R. Emmerson, and H. M. Carle, 1986: Gulf Stream warm rings: a statistical study of their behavior. Deep-Sea Res., 33, 1459-1473.
4. Carton, X., and J. McWilliams. 1989: Barotropic and baroclinic instabilities of axisymmetric vortices in a quasigeostrophic model. Mesoscale/Synoptic Coherent Structures in Geophysical Turbulence, J. C. Nihoul and B. Jamart, Eds., Elsevier, 841 pp.
5. Chassignet, E. P., 1990: Motion and evolution of oceanic rings in a numerical model and in observations. J. Geophys. Res., 95, 22 121-22 140.
6. Dewar, W. K., and P. D. Killworth, 1995: On the stability of oceanic rings, J. Phys. Oceanogr. 25, 1467-1487.
7. Flierl, G. R., 1988: On the instability of geostrophic vortices. J. Fluid Mech., 197, 349-388.
8. Gordon, A. L., and W. F. Haxby, 1990: Agulhas eddies invade the South Atlantic: Evidence from Geosat altimeter and shipboard conductivity-temperature-depth survey, J. Geophys. Res., 95, 3117-3125.
9. Helfrich, K. R., and U. Send, 1988: Finite-amplitude evolution of two-layer geostrophic vortices. J. Fluid Mech., 197, 331-348.
10. Holland, W., 1978: The role of mesoscale eddies in the general circulation of the ocean-numerical experiments using a wind-driven quasi-geostrophic model. J. Phys. Oceanogr., 8, 363-392.
11. Hooker, S. B., J. W. Brown, A. D. Kirwan, Jr., G. J. Lindemann, and R. P. Mied, 1995: Kinematics of a warm-core dipole ring, J. Geophys. Res., 100, 24 797-24 809.
12. Ikeda, M., 1981: Instability and splitting of mesoscale rings using a two-layer quasigeostrophic model on an f-plane. J. Phys. Oceanogr., 11, 987-998.
13. Kennelly, M., R. H. Evans, and T. M. Joyce, 1985: Small-scale cyclones on the periphery of a Gulf Stream warm-core ring. J. Geophys. Res., 90, 8845-8857.
14. Killworth, P. D., 1980: Barotropic and baroclinic instability in rotating stratified fluids, Dyn. Atmos. Ocean., 4, 143-184.
15. _, 1992: An equivalent-barotropic mode in the Fine Resolution Antarctic Model. J. Phys. Oceanogr., 22, 1379-1387.
16. _, J. R. Blundell, and W. K. Dewar, 1997: Primitive-equation instability of wide oceanic rings. I. Linear theory. J. Phys. Oceanogr., 27, 941-962.
17. Kloosterziel, R. C., and G. Van Heijst, 1989: On tripolar vortices. Mesoscale/Synoptic Coherent Structures in Geophysical Turbulence, J. C. Nihoul and B. Jamart, Eds., Elsevier. 841 pp.
18. Lai, D. Y., and P. L. Richardson, 1977: Distribution and movement of Gulf Stream rings. J. Phys. Oceanogr., 7, 670-683.
19. Olson, D. B., and R. H. Evans, 1986: Rings of the Agulhas Current. Deep-Sea Res., 33, 27-42.
20. _, R. W. Schmitt, M. Kennelly, and T. M. Joyce, 1985: A two-layer diagnostic model of the long-term physical evolution of warm-core ring 82B. J. Geophys. Res., 90, 8813-8822.
21. Paldor, N., and D. Nof, 1990: Linear instability of an anticyclonic vortex in a two-layer ocean, J. Geophys. Res., 95, 18 075-18 079.
22. Ripa, P., 1992: Instability of a solid-body rotating vortex in a two-layer model. J. Fluid Mech., 242, 395-417.
23. The Ring Group. 1981: Gulf Stream cold core rings: Their physics, chemistry and biology. Science, 212, 1091-1100.