Zatsepin et al.: The Sep-Like Venical Structure Forl1Ultion Due to Turbulent Mixing
5
4
S
3
C)
::r:: 2
o o
0 0
DO
0
0
0
00
2
3
U/N, em
4
Figure 4: The dependence of the initial layer thickness H on the scaling parameter UIN.
99
5
strong support for the suggestion that the step-like structure formation does not depend on the
nature of turbulence (shear or shear-free) and it may be not an exotic phenomenon in the
shallow summer pycnocline of Arctic seas under the influence of drifting ice floes. The
disintegration of such a pycnocline into a series of turbulent layers separated by thin density
interfaces may enhance the vertical transport of heat, salt and sediments and increase the rate of
underwater frazil ice formation (Krylov and Zatsepin, 1992).
References
Barenblatt, G.!., M. Bertsch, R. Dal Passo, V.M. Prostokishin and M. Ughi (1993) A mathematical model of
turbulent heat and mass transfer in stably stratified shear flow. J.Fluid Mech., 253, 341-358.
Golovin, P., I. Dmitrenko,.A. Zatsepin and A. Krylov (1996) The "splitting" of seasonal pycnocline due to the
ice edge motion (in Russian). Meteorologiya i Gidrologiya, 6, 82-91.
Kan, K. and N. Tarnai (1994) Direct measurements of the mutual- -entrainment velocity at a density interface. In:
International symposium on the stratified flows, Grenoble, France, pre-print 4, v.2.
Krylov, A.D. (1993) Laboratory study of the density interface structure in a shear flow. In: The annual
international session of the WG "Laboratory modelling of dynamic processes in the ocean", Abstracts,
Moscow, Institute for problems in mechanics, Russian Academy of Sciences, 47.
Krylov, A.D. and A.G. Zatsepin (1992) Frazil ice formation due to differential heat and salt exchange across a
density interface. J. of Marine Systems, 3,497-506.
Nishida, S. and S. Yoshida (1994) Stability criterion of a stratified two layer shear flow with hyperbolic-tangent
velocity profile. In: Preprints of fourth symp. on stratified flows, V.2, Grenoble, France.
Ozmidov R.V. (1965) On the turbulent exchange in the stably stratified ocean (in Russian). Izvestiya Akademii
Nauk SSSR, Phisika Atmosphery i Okeana, I, 853-860.
Park, Y-G., J.A. Whitehead. and A. Gnanadeskian (1994): Turbulent mixing in stratified fluids: layer formation
and energetics. 1. of Fluid Mech., 279, 279-311.
Phillips,O.M (1972) Turbulence in a strongly stratified fluid is unstable? Deep-Sea Research 19, 79-81.
Posmentier, E.S. (1977) The generation of salinity fine structure by vertical diffusion. J. Phys. Ocean. 7, 298300.
Ruddick,B.R., T. McDougall and J.S. Turner (1989) The formation of layers in a uniformly stirring density
gradient. Deep-Sea Research, 36, 597-609.
5
4
S
3
C)
::r:: 2
o o
0 0
DO
0
0
0
00
2
3
U/N, em
4
Figure 4: The dependence of the initial layer thickness H on the scaling parameter UIN.
99
5
strong support for the suggestion that the step-like structure formation does not depend on the
nature of turbulence (shear or shear-free) and it may be not an exotic phenomenon in the
shallow summer pycnocline of Arctic seas under the influence of drifting ice floes. The
disintegration of such a pycnocline into a series of turbulent layers separated by thin density
interfaces may enhance the vertical transport of heat, salt and sediments and increase the rate of
underwater frazil ice formation (Krylov and Zatsepin, 1992).
References
Barenblatt, G.!., M. Bertsch, R. Dal Passo, V.M. Prostokishin and M. Ughi (1993) A mathematical model of
turbulent heat and mass transfer in stably stratified shear flow. J.Fluid Mech., 253, 341-358.
Golovin, P., I. Dmitrenko,.A. Zatsepin and A. Krylov (1996) The "splitting" of seasonal pycnocline due to the
ice edge motion (in Russian). Meteorologiya i Gidrologiya, 6, 82-91.
Kan, K. and N. Tarnai (1994) Direct measurements of the mutual- -entrainment velocity at a density interface. In:
International symposium on the stratified flows, Grenoble, France, pre-print 4, v.2.
Krylov, A.D. (1993) Laboratory study of the density interface structure in a shear flow. In: The annual
international session of the WG "Laboratory modelling of dynamic processes in the ocean", Abstracts,
Moscow, Institute for problems in mechanics, Russian Academy of Sciences, 47.
Krylov, A.D. and A.G. Zatsepin (1992) Frazil ice formation due to differential heat and salt exchange across a
density interface. J. of Marine Systems, 3,497-506.
Nishida, S. and S. Yoshida (1994) Stability criterion of a stratified two layer shear flow with hyperbolic-tangent
velocity profile. In: Preprints of fourth symp. on stratified flows, V.2, Grenoble, France.
Ozmidov R.V. (1965) On the turbulent exchange in the stably stratified ocean (in Russian). Izvestiya Akademii
Nauk SSSR, Phisika Atmosphery i Okeana, I, 853-860.
Park, Y-G., J.A. Whitehead. and A. Gnanadeskian (1994): Turbulent mixing in stratified fluids: layer formation
and energetics. 1. of Fluid Mech., 279, 279-311.
Phillips,O.M (1972) Turbulence in a strongly stratified fluid is unstable? Deep-Sea Research 19, 79-81.
Posmentier, E.S. (1977) The generation of salinity fine structure by vertical diffusion. J. Phys. Ocean. 7, 298300.
Ruddick,B.R., T. McDougall and J.S. Turner (1989) The formation of layers in a uniformly stirring density
gradient. Deep-Sea Research, 36, 597-609.