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Steven R. Jayne, Nelson G. Hogg, and Paola Malanotte-Rizzoli

492 JOURNAL OF PHYSICAL OCEANOGRAPHY VOLUMe26Recirculation Gyres Forced by a Beta-Plane Jet* STEVEN R. JAY~MIT-WHOI Joint Program in Oceanography, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts NELSON G. HoooDepartment of Physical Oceanography, Woods Hole Oceanographic Institutiorn Woods Hole, Massachusetts PAOLA MnLA

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Michael Longuet-Higgins

2458 JOURNAL OF PHYSICAL OCEANOGRAPHY VOLUME25On the Disintegration of the Jet in a Plunging Breaker IVIICHAF& LONGUET-HIC_d31N$Institute for Nonlinear Science, University of California, San Diego, La Jells, California13 March 1995 and 14 April 1995ABSTRACT An inviscid mechanism is proposed for the breakup of the jet in a plunging surface wave. $tmamwise perturbations of the original surface

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Christopher C. Chapman and Andrew McC. Hogg

1. Introduction a. Background High-resolution satellite altimetry, long time hydrographic sections, and eddy-resolving numerical models have revealed that the Southern Ocean flow field is dominated by thin, strong, and quasi-zonal jetlike features. These jets show significant time variability: strengthening and weakening, splitting and merging, and shifting meridional position. However, the position of these jets is largely set by large, sub-surface topographic features ( Rintoul et al. 2001

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Benoit Cushman-Roisin, Larry Pratt, and Elise Ralph

JANUARY 1993 CUSHMAN-ROISIN ET AL. 91A General Theory for Equivalent Barotropic Thin Jets* BENOIT CUSHMAN-ROISINThayer School of Engineering, Dartmouth College LARRY PRATT AND ELISE RALPHWoods Hole Oceanographic Institution, Woods Hole, Massachusetts(Manuscript received 30 October 1991, in final form 20 March 1992)ABSTRACT The so-called thin-jet approximation, in which variations along the

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Marcus Dengler and Detlef Quadfasel

1. Introduction Deep zonal equatorial currents with short vertical scales throughout a substantial part of the water column were discovered by Luyten and Swallow (1976) in the Indian Ocean. By now, the equatorial deep jets are known to exist in all oceans. In general, they are characterized by alternating east–west currents trapped within 1° of the equator, having amplitudes of 10–20 cm s −1 and vertical wavelengths between 300 and 700 m. As more direct velocity measurements of the jets

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B. Sinha and K. J. Richards

. 1995). A banded structure in the velocity field is also seen in the results from numerical models of the Southern Ocean. The numerical solutions obtained by the Fine Resolution Antarctic Model ( FRAM Group 1991 ) exhibit a flow structure that is dominated along the track of the ACC by elongated filaments of high velocity embedded in slower moving fluid. This is illustrated in Fig. 1 , a plot of the eastward component of velocity u versus depth at 270°E. The jet structure is coherent down to

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Qian Li, Sukyoung Lee, and Alexa Griesel

be important. Close to the Macquarie Ridge–Campbell Plateau, Morrow et al. (1994) found that the eddy momentum flux convergence is significant and acts to accelerate the mean jet. Ivchenko et al. (1997) showed that eddy momentum flux convergence drives localized jets to the northeast of Drake Passage. Williams et al. (2007) found that in regions of topographic gaps, the vorticity flux (which is equivalent to the sum of the zonal and meridional convergence of eddy momentum flux) acts to

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A. M. Rogerson, P. D. Miller, L. J. Pratt, and C. K. R. T. Jones

1. Introduction It is well known that horizontal fluid exchange and mixing in the Gulf Stream and other oceanic jets can result from the detachment of rings and other spin-off eddies. More recently, attention has been focused on the prospect that exchange and stirring can occur due to the meandering motions of the stream in the absence of eddy detachments ( Bower 1991 ; Bower and Lozier 1994 ). Support for this idea comes from models of wavy flows that have simple Eulerian time dependence but

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F. J. Poulin and G. R. Flierl

1. Introduction Bottom topography in the ocean is a determining factor in shelf jet dynamics. Topography guides the large-scale ocean circulation and is also important in creating small-scale motions. For example, coastal topography can induce wave breaking and thereby cascade energy to smaller length scales ( Thorpe 2001 ). Large-scale ocean models cannot accurately describe small-scale mixing as occurs in coastal regions since these phenomena are on the order of the grid size or smaller

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Hsien Wang Ou

DECEMBER 1988HSIEN WANG OU1899Termination of an Equatorial Jet in a Gulf* HSIEN WANG OULamont-Doherty Geological Observatory of Columbia University, Palisades, New York(Manuscript received 4 February 1988, in final form 6 June 1988)ABSTRACT Motivated by the observed branching of the Equatorial Undercurrent in the Gulf of Guinea, an idealizedmodel is developed here to examine the termination of an equatorial jet in a gulf. Similarity solutions are foundthat can satisfy the

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