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Warm water cells in the North Water, northern Baffin Bay during winter
206
A. PhysicalOceanography
86:1418 Thomson, R.E. and J.F.R. Gower, 1985. A windinduced meseecuie eddy over the Vancouver
Island continental
slope. J. geophys. Res~
90(C5):8981-8993. A well-defined cyclonic eddy formed in 1000 m of water over the central portion of the continental slope; the eddy and attendant mesoscale circulation pattern evolved through mixed barotropic-baroclinic instability of a poleward flowing coastal jet generated during a 1-week period of strong southeast winds. Formation of the eddy appears to have taken place 5-7 days after onset of the jet and may have been triggered through perturbation of the mean flow. Results imply that eddylike circulation observed off the coast of Vancouver Island is frequently initiated by 'local' alongshore winds rather than through instability of the prevailing California Current regime. Results also indicate that thermal imagery often fails to delineate major oceanic surface features off the coast. Inst. of Ocean Sci., Sidney, BC, Canada. 86:1419 Zhao, Baoren, 1985. New evidence of the existence of a cydouic eddy in the northern East China Sea. Oceanologia Limnol. sin., 16(3):240-248. (In Chinese, English abstract.)
Recent observations of salinity, temperature and geostrophic and residual currents off the southwest coast of Cheju Island have documented the yearround existence of the cyclonic eddy. Principal characteristics of the Huanghai Coastal Current in the northern part of the East China Sea are also described. Inst. of Oceanol., Acad. Sin., Qingdao, People's Republic of China.
AIlO. Water masses and fronts 86:1420 Minster, J.-F., 1985. The two-glegree discontinuity as explained by Imundary mixing. J. geophys. Res, 90(C5):8953-8960.
The TDD encounters the western boundary at the level of the Western Boundary Undercurrent (WBUC). The TDD is more sharply defined along the western basin than along the Mid-Atlantic Ridge, where the TDD water is fresher and colder and where one finds more Antarctic Bottom Water (AABW) above the discontinuity. Along the western flank of the basin, upward mixing of AABW is stopped at the WBUC level by strong southward flow of North Atlantic Deep Water (NADW). Along the ridge, boundary mixing allows AABW to mix
OLR(1986)33(3)
upward with waters from shallower levels. Lab. de Phys. et Chim. de rHydrosphere, Paris, France. 86:1421 van Heijst, G.J.F., 1985. A gemtrolJk adJ~atent of a tlds! ImlY|n~frOll~t.J. phys. Oceanogr, 15(9): 1182-I 190.
A model of a tidal mixing front examines the geostrophic adjustment of a stratified two-layer fluid and a homogeneous fluid of intermediate density, originally separated by a vertical barrier. The frontal position and shape, as well as the velocity distributions in the final equilibrium state are determined by three physical parameters: a density ratio, a layer depth ratio and a baroclinic radius of deformation. Only one-third of the potential energy released during the adjustment process is converted into kinetic energy. Some general energy conversion property is likely to be associated with the assumption of potential vorticity conservation during the adjustment process. Univ. of Utrecht, Inst. of Meteorol. and Oceanogr., Netherlands.
A120. Convergences, divergences, upwelling 86:1422 Steffen, Konrad, 1985. Warm water cells in the North Water, northern llaffin Bay during winter. J. geophys. Res., 90(C5):9129-9136.
Surface temperatures above the freezing point of seawater were observed in the North Water during winter and early spring, indicating possible upwelling of warm water, presumably of Atlantic origin. Most warm water cells were found along the Greenland coast; they occurred most frequently in Smith Sound, west of Cape Alexander with highest temperatures south of Cape Alexander. The existence of warm water areas can be explained by the strong northerly wind resulting in a Coriolis force that induces coastal upwelling. The wind-induced offshore transport of North Water, compensated by the upwelling of Atlantic Baffin Bay water along the Greenland coast, will keep 10% of the North Water ice-free. Dept. of Geogr., Swiss Fed. Inst. of Tech., Zurich, Switzerland.
A150. Tides and sea level 86:1423 Cavallini, Fabio, 1985. A tha~e-dlmemiwd numef. kal model of tidal drcuintion in the necthern
A. PhysicalOceanography
86:1418 Thomson, R.E. and J.F.R. Gower, 1985. A windinduced meseecuie eddy over the Vancouver
Island continental
slope. J. geophys. Res~
90(C5):8981-8993. A well-defined cyclonic eddy formed in 1000 m of water over the central portion of the continental slope; the eddy and attendant mesoscale circulation pattern evolved through mixed barotropic-baroclinic instability of a poleward flowing coastal jet generated during a 1-week period of strong southeast winds. Formation of the eddy appears to have taken place 5-7 days after onset of the jet and may have been triggered through perturbation of the mean flow. Results imply that eddylike circulation observed off the coast of Vancouver Island is frequently initiated by 'local' alongshore winds rather than through instability of the prevailing California Current regime. Results also indicate that thermal imagery often fails to delineate major oceanic surface features off the coast. Inst. of Ocean Sci., Sidney, BC, Canada. 86:1419 Zhao, Baoren, 1985. New evidence of the existence of a cydouic eddy in the northern East China Sea. Oceanologia Limnol. sin., 16(3):240-248. (In Chinese, English abstract.)
Recent observations of salinity, temperature and geostrophic and residual currents off the southwest coast of Cheju Island have documented the yearround existence of the cyclonic eddy. Principal characteristics of the Huanghai Coastal Current in the northern part of the East China Sea are also described. Inst. of Oceanol., Acad. Sin., Qingdao, People's Republic of China.
AIlO. Water masses and fronts 86:1420 Minster, J.-F., 1985. The two-glegree discontinuity as explained by Imundary mixing. J. geophys. Res, 90(C5):8953-8960.
The TDD encounters the western boundary at the level of the Western Boundary Undercurrent (WBUC). The TDD is more sharply defined along the western basin than along the Mid-Atlantic Ridge, where the TDD water is fresher and colder and where one finds more Antarctic Bottom Water (AABW) above the discontinuity. Along the western flank of the basin, upward mixing of AABW is stopped at the WBUC level by strong southward flow of North Atlantic Deep Water (NADW). Along the ridge, boundary mixing allows AABW to mix
OLR(1986)33(3)
upward with waters from shallower levels. Lab. de Phys. et Chim. de rHydrosphere, Paris, France. 86:1421 van Heijst, G.J.F., 1985. A gemtrolJk adJ~atent of a tlds! ImlY|n~frOll~t.J. phys. Oceanogr, 15(9): 1182-I 190.
A model of a tidal mixing front examines the geostrophic adjustment of a stratified two-layer fluid and a homogeneous fluid of intermediate density, originally separated by a vertical barrier. The frontal position and shape, as well as the velocity distributions in the final equilibrium state are determined by three physical parameters: a density ratio, a layer depth ratio and a baroclinic radius of deformation. Only one-third of the potential energy released during the adjustment process is converted into kinetic energy. Some general energy conversion property is likely to be associated with the assumption of potential vorticity conservation during the adjustment process. Univ. of Utrecht, Inst. of Meteorol. and Oceanogr., Netherlands.
A120. Convergences, divergences, upwelling 86:1422 Steffen, Konrad, 1985. Warm water cells in the North Water, northern llaffin Bay during winter. J. geophys. Res., 90(C5):9129-9136.
Surface temperatures above the freezing point of seawater were observed in the North Water during winter and early spring, indicating possible upwelling of warm water, presumably of Atlantic origin. Most warm water cells were found along the Greenland coast; they occurred most frequently in Smith Sound, west of Cape Alexander with highest temperatures south of Cape Alexander. The existence of warm water areas can be explained by the strong northerly wind resulting in a Coriolis force that induces coastal upwelling. The wind-induced offshore transport of North Water, compensated by the upwelling of Atlantic Baffin Bay water along the Greenland coast, will keep 10% of the North Water ice-free. Dept. of Geogr., Swiss Fed. Inst. of Tech., Zurich, Switzerland.
A150. Tides and sea level 86:1423 Cavallini, Fabio, 1985. A tha~e-dlmemiwd numef. kal model of tidal drcuintion in the necthern