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Bo Qiu, Shuiming Chen, and William S. Kessler

jets at the northern/southern tip of the islands. With Fiji, Vanuatu, and New Caledonia staggered east/west from each other, the island-induced zonal jets merge, further complicating the funneled SEC. The presence of island-induced zonal jets was first noted by Webb (2000) in a ¼°-resolution global ocean general circulation model (OGCM). Specifically, Webb identified the North and South Fiji jets (NFJ and SFJ) in the North Fiji Basin, and the North Vanuatu jet (NVJ) and the North and South

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Hsien Wang Ou

966 JOURNAL OF PHYSICAL OCEANOGRAPHY -OLUME24Flow near a Continental Boundary Driven by an Oceanic Jet HSIEN WANG OULamont-Doherty Earth Observatory, Columbia University, Palisades, New York(Manuscript received 4 February 1992, in final form 19 August 1993) To provide possible dynamical interpretations of the Gulf Stream-induced circulation in the Middle AtlanticBight (MAB), the

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J. H. LaCasce, J. Escartin, Eric. P. Chassignet, and Xiaobiao Xu

partly barotropic (e.g., Semtner and Mintz 1977 ). In general, though, less attention has been paid to the vertical structure of the unstable eddies. Hereafter we use a linear two-layer model to study the stability of a surface-trapped jet over a slope. The focus is on the vertical structure of the fastest-growing modes, using oceanographically relevant parameters. As seen before, the slope suppresses baroclinic instability. Then, if the jet is narrow enough, lateral instability in the upper layer

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Nathan Paldor and Michael Ghil

isopycnal layers has a uniform value for the potential vorticity (PV), while the flow in each layer is in geostrophic balance with the slope of the interfaces separating the layers. Huang and Stommel calculated only the steady flows and interface depth profiles in their model. In the present work we address the temporal evolution of small amplitude perturbations for a simple steady-state zonal jet with a meridional profile similar to those studied by Huang and Stommel (1990) . The simplest model

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Stephanie Dutkiewicz and Nathan Paldor

2418 JOURNAL OF PHYSICAL OCEANOORAPHY VOLUME24On the Mixing Enhancement in a Meandering Jet Due to the Interaction with an Eddy STEPHANIE DUTKIEWICZ AND NATHAN PALDOR*Graduate School of Oceanography, University of Rhode Island, Narragansett, Rhode Island18 February 1993 and 17 February 1994ABSTRACT The interaction between a simple meandering jet, such as the Gulf Stream, and an eddy is shown to greatlyenhance thc mixing and

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Olivier Marchal

thermocline isolates much of the front from the surface. Despite the underestimation of frontal density gradients due to data averaging in time and space, the inferred geostrophic velocity field south of Nantucket was characterized by a strong baroclinic jet (0.2–0.3 m s −1 ). The core of the jet had a width estimated to 15–20 km and was found to be located near the 150-m isobath. In a subsequent study, Fratantoni et al. (2001) analyzed a collection of highly resolved velocity sections obtained from

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G. T. Csanady and Jon T. Scott

524 JOURNAl. OF PHYSICAl. OCEANOGRAPHYBaroclinic Coastal Jets in Lake Ontario during IFYGL~ G. T. CSANADYWoods Ilole Oceanographic Institution, Woods I[ole, Mass. 02543 J ON T. Sco'rrDept. of Atmospherh: Science, State University of New York, Albany 12222(Manuscript received 25 March 1974, in revised form 6 June 1974) ABSTRACT Coastal cmrent observations taken at five locations in Lake Ontario during IFYGL, in periods of

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K. Shafer Smith

isotropic and there could be no statistical dependence on the mean flow direction. The linear theory leads one to consider the effects of β on suppressing the linear instability, but in fully developed turbulence β has a second, unrelated effect on the flow: the inverse cascade of energy produced by baroclinic instability is impeded in the meridional direction by the Rossby dispersion relation, leading to the formation of zonal jets ( Rhines 1975 ; Williams 1978 ; Vallis and Maltrud 1993 ). A slew

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Yasunori Sue and Atsushi Kubokawa

) and their extensions with inertial recirculation gyres, which suggest the importance of nonlinearity (e.g., Ierley 1990 ; Kamenkovich et al. 1995 ). Development of these numerical models of ocean circulation was reviewed in detail by McWilliams (1996) . In spite of the success in reproducing western boundary current separation and eastward extensions, the dynamics of western boundary current separation and the maintenance of eastward jets have not been satisfactorily clarified yet. Because the

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J. S. Allen

VOL. 3, NO. 3 JOURNAL OF PHYSICAL OCEANOGRAPHY JULY 1973Upwelling and Coastal Jets in a Continuously Stratified Ocean J. S. ALLENDepL of Aerospace Engineering, The Pennsfivania State University, University Park 16802(Manuscript received 26 December 1972, in revised form 12 February 1973)ABSTRACT A simple, linear, two-dimensional, f-plane model of coastal upwelling in a continuously

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