Mixing in the stratified interface of the Faroe Bank Channel overflow: The role of transverse circulation and internal waves

Journal of Geophysical Research: Oceans

Volumn 116, Issue 7, 2011, Pages

  Seim, Knut S ^a   Fer, Ilker ^b  

^a NORWEGIAN UNIVERSITY OF SCIENCE AND TECHNOLOGY   (Norway)

^b UNIVERSITY OF BERGEN   (Norway)

Author keywords

[No Author keywords available]

Indexed keywords

BUDGET CONTROL; MIXING; OCEANOGRAPHY; PRESSURE GRADIENT; TIME SERIES;

BOTTOM FRICTION; COLD WATERS; DENSE WATERS; DENSITY PROFILE; DIRECT MEASUREMENT; DISSIPATION RATES; DOMINANT MECHANISM; EKMAN TRANSPORT; FAROE BANK CHANNEL; GEOSTROPHIC BALANCE; GEOSTROPHIC FLOW; INTERFACIAL LAYER; INTERNAL WAVE BREAKING; INTERNAL WAVES; LONG TIME SERIES; MIXING MECHANISMS; MOMENTUM BUDGET; NORTH ATLANTIC OCEAN; RICHARDSON NUMBER; SHEAR-INDUCED MIXING; SPECTRAL DISTRIBUTION; TRANSVERSE MOMENTA; TRANSVERSE VELOCITY; TURBULENT ENERGIES; VERTICAL MIXING; VOLUME FLUX; WAVEFIELDS;

SHEAR FLOW;

DENSITY CURRENT; EKMAN TRANSPORT; GEOSTROPHIC FLOW; HYDROGRAPHY; INTERNAL WAVE; MICROSTRUCTURE; MIXING; OVERTURN; PRESSURE GRADIENT; RICHARDSON NUMBER; VOLUME;

ATLANTIC OCEAN; ATLANTIC OCEAN (NORTH); FAROE BANK CHANNEL;

EID: 79961240435     PISSN: None     EISSN: 21699291     Source Type: Journal    
DOI: 10.1029/2010JC006805     Document Type: Article

References (45)

1. Baringer, M. O., and J. F. Price (1997), Mixing and spreading of the Mediterranean outflow, J. Phys. Oceanogr., 27, 1654-1677.
2. Baumert, H. Z., and H. Peters (2009), Turbulence closure: turbulence, waves and the wave-turbulence transition-Part 1: Vanishing mean shear, Ocean Sci., 5, 47-58.
3. Borenäs, K. M., and P. A. Lundberg (1988), On the deep-water flow trough the Faroe Bank Channel, J. Geophys. Res., 93, 1281-1292.
4. Borenäs, K. M., and P. A. Lundberg (2004), The Faroe Bank Channel deep-water overflow, Deep Sea Res., Part II, 51, 335-350.
5. Canuto, V. M., Y. Cheng, A. M. Howard, and I. N. Esau (2008), Stably stratified flows: a model with no Ri(cr), J. Atmos. Sci., 65, 2437-2447.
6. Darelius, E. (2008), Topographic steering of dense overflows: Laboratory experiments with V-shaped ridges and canyons, Deep Sea Res., Part I, 55, 1021-1034.
7. Darelius, E., and A. K. Wåhlin (2007), Downward flow of dense water leaning on a submarine ridge, Deep Sea Res., Part I, 54, 1173-1188. (Pubitemid 46970730)
8. D'Asaro, E. A., and R.-C. Lien (2000), The wave-turbulence transition for stratified flows, J. Phys. Oceanogr., 30, 1669-1678.
9. Egbert, G. D., A. F. Bennett, and M. G. G. Foreman (1994), TOPEX/ POSEIDON tides estimated using a global inverse model, J. Geophys. Res., 99, 24,821-24,852.
10. Ezer, T. (2006), Topographic influence on overflow dynamics: Idealized numerical simulations and the Faroe Bank Channel, J. Geophys. Res., 111, C02002, doi:10.1029/2005JC003195.
11. Fer, I., R. Skogseth, and F. Geyer (2010a), Internal waves and mixing in the marginal ice zone near the Yermak Plateau, J. Phys. Oceanogr., 40, 1613-1630.
12. Fer, I., G. Voet, K. S. Seim, B. Rudels, and K. Latarius (2010b), Intense mixing of the Faroe Bank Channel overflow, Geophys. Res. Lett., 37, L02604, doi:10.1029/2009GL041924.
13. Garrett, C. J., and W. H. Munk (1972), Space-time scales of internal waves, Geophys. Fluid Dyn., 3(1), 225-264.
14. Geyer, F., S. Østerhus, B. Hansen, and D. Quadfasel (2006), Observations of highly regular oscillations in the overflow plume downstream of the Faroe Bank Channel, J. Geophys. Res., 111, C12020, doi:10.1029/ 2006JC003693.
15. Girton, J. B., and T. B. Sanford (2003), Descent and modification of the overflow plume in the Denmark Strait, J. Phys. Oceanogr., 33, 1351-1364. (Pubitemid 37084536)
16. Gregg, M. C. (1989), Scaling turbulent dissipation in the thermocline, J. Geophys. Res., 94, 9686-9698.
17. Gregg, M. C., T. B. Sanford, and D. P. Winkel (2003), Reduced mixing from the breaking of internal waves in equatorial waters, Nature, 422(6931), 513-515. (Pubitemid 36433644)
18. Hansen, B., and S. Østerhus (2000), North Atlantic-Nordic seas exchanges, Prog. Oceanogr., 45, 109-208. (Pubitemid 30205663)
19. Hansen, B., and S. Østerhus (2007), Faroe Bank Channel overflow 1995-2005, Prog. Oceanogr., 75, 817-856. (Pubitemid 350179943)
20. Henyey, F. S., J. Wright, and S. M. Flatte (1986), Energy and action flow through an internal wave field: An eikonal approach, J. Geophys. Res., 91, 8487-8495.
21. Johnson, G. C., and D. R. Ohlsen (1994), Frictionally modified rotating hydraulic channel exchange and ocean outflows, J. Phys. Oceanogr., 24, 66-78.
22. Johnson, G. C., and T. Sanford (1992), Secondary circulation in the Faroe Bank Channel outflow, J. Phys. Oceanogr., 22, 927-933.
23. Johnson, G. C., R. G. Lueck, and T. B. Sanford (1994a), Stress on the Mediterranean outflow plume: Part 2. Turbulent dissipation and shear measurements, J. Phys. Oceanogr., 24, 2084-2092.
24. Johnson, G. C., T. B. Sanford, and M. O. Baringer (1994b), Stress on the Mediterranean outflow plume: Part 1. Velocity and water property measurements, J. Phys. Oceanogr., 24, 2072-2083.
25. Kunze, E., E. Firing, J. M. Hummon, T. K. Chereskin, and A. M. Thurnherr (2006), Global abyssal mixing inferred from lowered ADCP shear and CTD strain profiles, J. Phys. Oceanogr., 36, 1553-1576. (Pubitemid 44550281)
26. Levine, M. D., L. Padman, R. D. Muench, and J. H. Morison (1997), Internal waves and tides in the western weddell sea: Observations from ice station weddell, J. Geophys. Res., 102, 1073-1089.
27. Lu, Y., and R. G. Lueck (1999), Using a broadband ADCP in a tidal channel. Part I: Mean flow and shear, J. Atmos. Oceanic Technol., 16(11), 1556-1567. (Pubitemid 30130250)
28. Mauritzen, C., J. Price, T. Sanford, and D. Torres (2005), Circulation and mixing in the Faroese Channels, Deep Sea Res., Part I, 52, 883-913. (Pubitemid 40707618)
29. Peters, H., and W. E. Johns (2005), Mixing and entrainment in the Red Sea outflow plume. Part II: Turbulence characteristics, J. Phys. Oceanogr., 35, 584-600. (Pubitemid 40959361)
30. Peters, H., C. M. Lee, M. Orlic, and C. E. Dorman (2007), Turbulence in the wintertime northern Adriatic Sea under strong atmospheric forcing, J. Geophys. Res., 112, C03S09, doi:10.1029/2006JC003634. (Pubitemid 46850505)
31. Polzin, K. (2004), A heuristic description of internal wave dynamics, J. Phys. Oceanogr., 34, 214-230. (Pubitemid 38257015)
32. Polzin, K. L., J. M. Toole, and R. W. Schmitt (1995), Finescale parameterizations of turbulent dissipation, J. Phys. Oceanogr., 25, 306-328.
33. Price, J. F., M. O. Barringer, R. G. Lueck, G. C. Johnson, I. Ambar, G. Parrilla, A. Cantos, M. A. Kennelly, and T. B. Sanford (1993), Mediterranean outflow and mixing dynamics, Science, 259, 1277-1282.
34. Riemenschneider, U., and S. Legg (2007), Regional simulations of the Faroe Bank Channel overflow in a level model, Ocean Model., 17, 93-122. (Pubitemid 46381575)
35. Saunders, P. M. (1990), Cold outflow from the Faroe Bank Channel, J. Phys. Oceanogr., 1, 29-43.
36. Saunders, P. M. (2001), The dense northern overflows, in Ocean Circulation and Climate, edited by G. Siedler et al., pp. 401-417, Academic, Sand Diego, Calif.
37. Seim, K. S., I. Fer, and J. Berntsen (2010), Regional simulations of the Faroe Bank Channel overflow using a s-coordinate ocean model, Ocean Model., 35, 31-44, doi:10.1016/j.ocemod.2010.06.002.
38. Stahr, F. R., and T. B. Sanford (1999), Transport and bottom boundary layer observations of the North Atlantic Deep Western Boundary Current at the Blake Outer Ridge, Deep Sea Res., Part II, 46, 205-243. (Pubitemid 29163247)
39. Umlauf, L. (2009), The description of mixing in stratified layers without shear in large-scale ocean models, J. Phys. Oceanogr., 39, 3032-3039.
40. Umlauf, L., and L. Arneborg (2009a), Dynamics of rotating shallow gravity currents passing through a channel. Part I: Observation of transverse structure, J. Phys. Oceanogr., 39, 2385-2401.
41. Umlauf, L., and L. Arneborg (2009b), Dynamics of rotating shallow gravity currents passing through a channel. Part II: Analysis, J. Phys. Oceanogr., 39, 2402-2416.
42. Umlauf, L., L. Arneborg, R. Hofmeister, and H. Burchard (2010), Entrainment in shallow rotating gravity currents: A modeling study, J. Phys. Oceanogr., 40, 1819-1834.
43. Visbeck, M. (2002), Deep velocity profiling using lowered acoustic Doppler current profilers: Bottom track and inverse solutions, J. Atmos. Oceanic Technol., 19, 794-807. (Pubitemid 34657946)
44. Wåhlin, A. K. (2002), Topographic steering of dense currents with application to submarine canyons, Deep Sea Res., Part I, 49, 305-320. (Pubitemid 34122414)
45. Wåhlin, A. K. (2004), Downward channeling of dense water in topographic corrugations, Deep Sea Res., Part I, 51, 577-590. (Pubitemid 38458931)