Ukrainian Antarctic Journal

No 9 (2010): Ukrainian Antarctic Journal
Articles

Structure and dynamics of gravity currents on a slope: a flow of transformed under the Ronne-Filchner ice water in the Weddell Sea

V. Maderich
Institute of mathematical machines and systems problems, Kyiv
K. Terletska
Institute of mathematical machines and systems problems, Kyiv
I. Brovchenko
Institute of mathematical machines and systems problems, Kyiv
Published December 15, 2010
Keywords
  • gravity currents on a slope,
  • vortex shedding,
  • POM model,
  • non-hydrostatic model,
  • Ronne-Filchner ice shelf,
  • Filchner overflow,
  • Weddell Sea
  • ...More
    Less
How to Cite
Maderich, V., Terletska, K., & Brovchenko, I. (2010). Structure and dynamics of gravity currents on a slope: a flow of transformed under the Ronne-Filchner ice water in the Weddell Sea. Ukrainian Antarctic Journal, (9), 263-270. https://doi.org/10.33275/1727-7485.9.2010.413

Abstract

The results of numerical study of the influence of submarine ridges on the gravitational current on the slope of the laboratory scale and on the transformed under the Ronne-Filchner ice shelf flow of water into the Weddell Sea. For the computation of the laboratory-scale flow and of the seawater flow over the continental slope the non-hydrostatic and hydrostatic versions of the POM model were used, respectively. The processes of vortex shedding over a slope and the influence of one or two undersea ridges on the near-bottom flows were considered.

References

  1. Darelius, E., & Wåhlin, A.K. (2007). Downward flow of dense water leaning on a submarine ridge. Deep-Sea Res. I, 54, 1173–1188.
  2. Filatov, N., Hutter, K., Maderich, V., et al. (2011). Strongly nonlinear internal waves in lakes: generation, transformation and meromixis. Springer. Series: Advances in Geophys. and Env. Mech.
  3. Foldvik, A., Gammelsrød, T., Østerhus, S. et al. (1995). Formation and discharge of deep and bottom water in the northwestern Weddell Sea. J. Mar. Res., 53, 515–538.
  4. GEBCO. (2003). GEBCO DIGITALATLAS. Centenary Edition. CD-ROM. British Oceanographic Data Centre.
  5. Hasumi, H., & Matsumura, Y. (2010). Modeling ice shelf water overflow and bottom water formation in the southern Weddell Sea. J. Geophys. Res., 115, C10033.
  6. Kanarska, Y., & Maderich, V. (2003). Anon-hydrostatic numerical model for calculating of free-surface stratified flows. Ocean Dynamics, 51, 176–185.
  7. Lane-Serff, G.F., & Baines, P.G. (2000). Eddy formation by overflows in stratified water. J. Phys. Oceanogr., 30, 327–337.
  8. Locarnini, R., Whitworth, III A.T., & Nowlin, W.D.Jr. (1993). The importance of the Scotia Sea on the outflow of Weddell Sea Deep Water. J. Mar. Res., 51, 135–153.
  9. Mellor, G.L. An equation of state for numerical models of ocean and estuaries. J. Atmos. Ocean. Tech., 8, 609–613.
  10. Mellor, G.L. (2004). Users' guide for a three-dimensional, primitive equation, numerical ocean model. Program in Atmospheric and Oceanic Sciences, Princeton University.
  11. Mellor, G.L., Hakkinen, S., Ezer, T., et al. (2002). A generalization of a sigma coordinate ocean model and an intercomparison of model vertical grids. In: N. Pinardi, J.D. Woods (Eds.), Ocean Forecasting: Conceptual Basis and Applications. Springer, Berlin.
  12. 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.
  13. van Leer, B. (1979). Toward the ultimate conservative difference scheme. V: Asecond order sequel to Godunov's method. J. Comput. Phys., 32, 101–136.
  14. Wang, Q., Danilov, S., Schröter, J. (2008). Bottom water formation in the southern Weddell Sea and the influence of submarine ridges: Idealized numerical simulations. Ocean Modelling, 28, 50–59.
  15. Wåhlin, A.K., Darelius, E., Cenedese, C., et al. (2008). Laboratory observations of enhanced entrainment in dense overflows in the presence of submarine canyons and ridges. Deep Sea Res. I., 55, 737–750.
  16. Wilchinsky, A.V., Feltham, D.L. (2009). Numerical simulation of the Filchner overflow. J. Geophys. Res., 114, C12012.