MARC record from Internet Archive

LEADER: 02336cam 2200265Ma 4500
001 ocn640490079
003 OCoLC
005 20120511114406.0
008 971229s1997 cau bm f000 0 eng d
040 $aAD#$beng$cAD#$dOCLCQ
035 $a(OCoLC)640490079
100 1 $aStone, Rebecca E.
245 10 $aDeep mixed layer entrainment.
260 $aMonterey, Calif. :$bNaval Postgraduate School ;$aSpringfield, Va. :$bAvailable from National Technical Information Service,$c1997.
300 $ax, 67 p. ;$c28 cm.
500 $aThesis advisors, Roland W. Garwood, Peter S. Guest.
500 $aAD-A331 956.
502 $aThesis (M.S. in Meteorology and M.S. in Physical Oceanography)--Naval Postgraduate School, March 1997.
504 $aIncludes bibliographical references (p. 63-64).
520 $aA bulk turbulence-closure mixed layer model is generalized to allow prediction of very deep polar sea mixing. The model includes unsteady three- component turbulent kinetic energy budgets. In addition to terms for shear production, pressure redistribution, and dissipation, special attention is devoted to realistic treatment of thermobaric enhancement of buoyancy flux and to Coriolis effect on turbulence. The model is initialized and verified with CTD data taken by R/V Valdivia in the Greenland Sea during winter 1993-1994. Model simulations show (1) mixed layer deepening is significantly enhanced when the thermal expansion coefficient's increase with pressure is included; (2) entrainment rate is sensitive to the direction of wind stress because of Coriolis; and (3) the predicted mixed layer depth evolution agrees qualitatively with the observations. Results demonstrate the importance of water column initial conditions, accurate representation of strong surface cooling events, and inclusion of the thermobaric effect on buoyancy, to determine the depth of mixing and ultimately the heat and salt flux into the deep ocean. Since coupling of the ocean to the atmosphere through deep mixed layers in polar regions is fundamental to our climate system, it is important that regional and global models be developed that incorporate realistic representation of this coupling.
650 4 $aOCEAN SURFACE.
650 4 $aOCEANOGRAPHIC DATA.
650 4 $aENTRAINMENT.
994 $aZ0$bPMR
948 $hNO HOLDINGS IN PMR - 1 OTHER HOLDINGS