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Eddy Amplitudes and Fluxes in a Homogeneous Model of Fully Developed Baroclinic Instability
Eddy Amplitudes Baroclinic Instability Homogeneous Model
2008/12/12
A horizontally homogeneous two-layer quasigeostrophic model with imposed environmental vertical shear is used to study eddy energies and fluxes in the regime in which an inverse barotropic energy casc...
Radiating Instability of Nonzonal Oceanic Shear Flows with Application to the Kuroshio Extension Current
Kuroshio Extension Current Nonzonal Oceanic Shear Flows
2008/12/12
This paper proposes a mechanism to explain the fairly energetic internal temperature fluctuations observed in the regions far away from the axis of the Kuroshio Extension Current (KEC). Based upon the...
Baroclinic Instability and Thermohaline Gradient Alignment in the Mixed Layer
mixed layer subinertial mixed layer Thermohaline Gradient Alignment Baroclinic Instability
2008/12/12
The density of the mixed layer (ML) is approximately uniform in the vertical, but there are dynamically important horizontal gradients. The subinertial mixed layer (SML) approximation is a small Rossb...
Structure and Instability of the Ekman Spiral in the Presence of Surface Gravity Waves
Ekman Spiral Surface Gravity Waves
2008/12/12
The physical processes responsible for maintaining the mixed layer am examined by considering the velocity structure. The low-frequency Ekman response in the interior of unstratified mixed layers is m...
Meridional Asymmetry and Energetics of Tropical Instability Waves
tropical instability waves South Equatorial Current
2008/12/12
One of the striking features of tropical instability waves (TIWs) is that they appear to be more prominent north of the equator. A linearized, 2½-layer ocean model is used to investigate effect...
Radiating Instability of Nonzonal Ocean Currents
Radiating Instability Nonzonal Ocean Currents
2008/12/9
The linear stability of nonzonal flow, uniform in the alongjet direction on a beta plane, is studied. The flow is balanced by a forcing term in the potential vorticity equation. The problem is analyze...
Instability of Two-Dimensional Themohaline Circulation
Two-Dimensional Themohaline Circulation two-cell circulation
2008/12/8
Two different two-dimensional models of the thermohaline circulation of the ocean have been used to study the loss of stability of a thermally dominated symmetrical two-cell circulation. Although the ...
The linear instability of a zonal geostrophic jet with a cosh−2 meridional profile on an f plane is investigated in a reduced-gravity, shallow-water model. The stability theory developed here ex...
Primitive Equation Instability of Wide Oceanic Rings. Part I：Linear Theory
Wide Oceanic Rings Linear Theory Asymptotic theory
2008/11/18
The linear stability of two-layer primitive equation ocean rings is considered in the case when the rings are wide compared with a deformation radius, as is usually observed. Asymptotic theory is deve...
The weakly nonlinear dynamics of “vorticity waves” (VW), specific wavelike motions occurring nearshore in the presence of an alongshore shear current is examined. By means of a standard asymptotic...
Tropical Instability Wave Energetics: Observations from the Tropical Instability Wave Experiment
meridional velocity component cyclonic shear Tropical Instability Wave Experiment
2008/11/5
Ocean velocity data from an array of subsurface moorings deployed from May 1990 to June 1991 during the Tropical Instability Wave Experiment are used to study the energetics of planetary waves in the ...
Gravitational, Symmetric, and Baroclinic Instability of the Ocean Mixed Layer
Baroclinic Instability Gravitational Symmetric Ocean Mixed Layer
2008/10/29
A hierarchy of hydrodynamical instabilities controlling the transfer of buoyancy through the oceanic mixed layer is reviewed. If a resting ocean of horizontally uniform stratification is subject to sp...
Dynamics of Nonlinear Cross-Equatorial Flow. Part II: The Tropically Enhanced Instability of the Western Boundary Current
Nonlinear Cross-Equatorial Flow Western Boundary Current Tropically Enhanced Instability
2008/10/23
A linear stability analysis of the shallow-water system in the tropical ocean examines the stability of the western boundary current and its latitudinal dependence. Despite a highly idealized formulat...
Mesoscale Subduction at the Antarctic Polar Front Driven by Baroclinic Instability
Mesoscale Subduction Antarctic Polar Front Driven Baroclinic Instability
2008/8/7
A study of mesoscale subduction at the Antarctic Polar Front (PF) is conducted by use of hydrographic data from a high-resolution, quasi-synoptic survey of the front. The geostrophic velocity and isop...
Baroclinic Instability of Two-Layer Flows over One-Dimensional Bottom Topography
Baroclinic Instability Two-Layer Flows One-Dimensional Bottom Topography
2008/8/7
Using the QG approximation, the stability of two-layer zonal flows on the beta plane over bottom topography is examined. The topography is assumed to be one-dimensional, with the isobaths being direct...