Laboratory observations of enhanced entrainment in dense overflows in the presence of submarine canyons and ridges

Deep-Sea Research Part I: Oceanographic Research Papers

Volumn 55, Issue 6, 2008, Pages 737-750

  Wahlin A K ^a   Darelius, E ^b   Cenedese, C ^c   Lane Serff, G F ^d  

^a UNIVERSITY OF GOTHENBURG   (Sweden)

^b UNIVERSITY OF BERGEN   (Norway)

^c WOODS HOLE OCEANOGRAPHIC INSTITUTION   (United States)

^d UNIVERSITY OF MANCHESTER   (United Kingdom)

Author keywords

Density currents; Entrainment; Mixing; Topographic corrugations; Topographic steering

Indexed keywords

FLOW OF FLUIDS; MIXING; OCEAN CURRENTS; REYNOLDS NUMBER; SEAWATER; TOPOGRAPHY;

DENSITY CURRENTS; TOPOGRAPHIC CORRUGATIONS; TOPOGRAPHIC STEERING; WATER SOURCE;

MARINE ENGINEERING;

CONTINENTAL SLOPE; DENSE WATER; DENSITY CURRENT; ENTRAINMENT; FROUDE NUMBER; GEOSTROPHIC FLOW; LABORATORY METHOD; MIXING; REYNOLDS NUMBER; SUBMARINE CANYON; WATER FLOW;

EID: 44649130005     PISSN: 09670637     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.dsr.2008.02.007     Document Type: Article

References (34)

1. Baines P. Mixing in flows down gentle slopes into stratified environments. Journal of Fluid Mechanics 443 (2001) 237-270
2. Baines P. Mixing regimes for the flow of dense fluid down slopes into stratified environments. Journal of Fluid Mechanics 538 (2005) 245-267
3. Baines P.G., and Condie S. Observations and modelling of Antarctic downslope flows: a review. In: Jacobs S.S., and Weiss R.F. (Eds). Ocean, Ice, and Atmosphere-Interaction at the Antarctic Continental Margin (1998), AGU, Washington, DC 75
4. Baines P., and Turner J. Turbulent buoyant convection from a source in a confined region. Journal of Fluid Mechanics 37 (1969) 51-80
5. Cenedese, C., Adduce, C., 2008. Mixing in a density driven current down a slope in a rotating fluid. Journal of Fluid Mechanics, in press.
6. Cenedese C., Whitehead J.A., Ascarelli T.A., and Ohiwa M. A dense current flowing down a sloping bottom in a rotating fluid. Journal of Physical Oceanography 34 (2004) 188-203
7. Chang Y.S., Xu X., Özgökmen T.M., Chassignet E.P., Peters H., and Fischer P.F. Comparison of gravity current mixing parameterizations and calibration using a high-resolution 3D nonhydrostatic spectral element model. Ocean Modelling 10 (2005) 342-368
8. Darelius, E., 2008. Topographic steering of dense overflows-laboratory experiments with vee-shaped ridges and canyons. Deep-Sea Research I, in press, doi:10.1016/j.dsr.2008.04.008.
9. Darelius E., and Wåhlin A.K. Downward flow of dense water leaning on a submarine ridge. Deep-Sea Research I 56 7 (2007) 1173-1188
10. Darelius, E., Smedsrud, L., Østerhus, S., Gammelsrød, T., Foldvik, A., 2008. On the structure and variability of the Filchner overflow plume. Tellus A, submitted.
11. Davies P.A., Guo Y., and Rotenberg E. Laboratory model studies of Mediterranean outflow adjustment in the Gulf of Cadiz. Deep-Sea Research II 49 19 (2002) 4207-4225
12. Davies P., Wåhlin A., and Guo Y. Laboratory and analytical model studies of the Faroe bank channel deep-water outflow. Journal of Physical Oceanography 36 (2006) 1348-1364
13. Ellison T.H., and Turner J.S. Turbulent entrainment in stratified flows. Journal of Fluid Mechanics 6 (1959) 423-448
14. Foldvik A., Gammelsröd T., Österhus S., Fahrbach E., Rohardt G., Schroder M., Nicholls K., Padman L., and Woodgate R. Ice shelf water overflow and bottom water formation in the Southern Weddell Sea. Journal of Geophysical Research 109 C2 (2004)
15. Girton J.B., and Sanford T. Descent and modification of the overflow plume in the Denmark Strait. Journal of Physical Oceanography 33 (2003) 1351-1364
16. Hughes G., and Griffiths R. A simple convective model of the global overturning circulation, including effects of entrainment into sinking regions. Ocean Modeling 12 (2006) 46-79
17. Jiang L., and Garwood R.W. Effects of topographic steering and ambient stratification on overflows on continental slopes: a model study. Journal of Geophysical Research 103 C3 (1998) 5459-5476
18. Kämpf J. Cascading-driven upwelling in submarine canyons at high latitudes. Journal of Geophysical Research 110 (2005) C02007
19. Kämpf J., and Fohrmann H. Sediment-driven downslope flow in submarine canyons and channels: three-dimensional numerical experiments. Journal of Physical Oceanography 30 (2000) 2302-2319
20. Lane-Serff G., and Baines P. Eddy formation by dense flows on slopes in a rotating fluid. Journal of Fluid Mechanics 363 (1998) 229-252
21. Ledwell J.R., Montgomery E.T., Polzin K.L., St Laurent L.C., Schmitt R.W., and Toole J.M. Evidence for enhanced mixing over rough topography in the abyssal ocean. Nature 403 (2000) 179-182
22. Price J.F., and O'Neil Baringer M. Outflows and deep water production by marginal seas. Progress in Oceanography 33 (1994) 161-200
23. Sherwin T.J., and Turrell W.R. Mixing and advection of a cold water cascade over the Wyville Thomson Ridge. Deep-Sea Research I 52 8 (2005) 1392-1413
24. Sherwin T.J., Griffiths C.R., Inall M.E., and Turrell W.R. Quantifying the overflow across the Wyville Thompson Ridge into the Rockall Trough. Deep-Sea Research I 55 (2008) 396-404
25. Smith P.C. Streamtube model for bottom boundary currents in ocean. Deep-Sea Research 22 12 (1975) 853-873
26. Sutherland B.R., Nault J., Yewchuk K., and Swaters G.E. Rotating dense current on a slope. Part 1. Stability. Journal of Fluid Mechanics 508 (2004) 241-264
27. Tritton D.J. Physical Fluid Dynamics (1988), Clarendon Press 519pp
28. Vilibic I., Grbec B., and Supic N. Dense water generation in the north Adriatic in 1999 and its recirculation along the Jabuka Pit. Deep-Sea Research I 51 11 (2004) 1457-1474
29. Wåhlin A.K. Topographic steering of dense water with application to submarine canyons. Deep-Sea Research I 49 (2002) 305-320
30. Wåhlin A.K. Downward channeling of dense water in topographic corrugations. Deep-Sea Research I 51 (2004) 577-590
31. Wåhlin A.K., and Cenedese C. How entraining density currents influence the stratification in a one-dimensional ocean basin. Deep-Sea Research II 53 (2006) 172-193
32. Wells J.R., and Helfrich K.R. Mixing at the head of a canyon: a laboratory investigation of fluid exchanges in a rotating, stratified basin. Journal of Geophysical Research 111 C12 (2006) Art. No. C12004
33. Wells M., and Wettlaufer J. Two-dimensional density currents in a confined basin. Geophysical and Astrophysical Fluid Dynamics 99 3 (2005) 199-218
34. Wells M., and Wettlaufer J. The long-term circulation driven by density currents in a two-layer stratified basin. Journal of Fluid Mechanics 572 (2007) 37-58