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An Analysis of the Cabbeling Instability in Sea Water
nonlinear equation sea water Cabbeling Instability
2009/4/3
Due to the nonlinear equation of state of sea water it is possible for the mixture of two Parcels of sea water with the same density but different temperatures and salinities to have a density greater...
An experimental study is made of a baroclinic vortex produced in a two-layer fluid. After the equivalence between the experiment and the heated annulus experiment of Hide is established, it is argued ...
An Experimental Study of the Resonant Instability of an Internal Wave of Mode 3 Over a Range of Driving Frequencies
Resonant Instability Internal Wave Driving Frequencies
2009/3/26
An experimental study of the stability of a progressive internal wave of mode 3 propagating down a long tank filled with a linearly stratified salt solution is conducted over the range 0.45ω3/N0.80, w...
Baroclinic instability is examined in a two-layer, quasi-geostrophic model for linearized mesoscale waves (i.e., with periods of a few months and length scales near the internal deformation radius). T...
Baroclinic Instability over a Slope. Part II：Finite-Amplitude Theory
Baroclinic Instability Finite-Amplitude Theory
2009/3/24
Baroclinic instability of a circular current is modified by the presence of a unidirectional bottom slope. An analytical theory is developed for the slightly unstable flow regime over a weak slope. Th...
Baroclinic Instability over a Slope. Part I：Linear Theory
Baroclinic Instability Slope Linear Theory
2009/3/24
We consider the instability properties of a circular current in the upper layer of a two-layer quasi-geostrophic ocean over a unidirectional slope. This particular flow-topography geometry is intended...
On Secondary Baroclinic Instability and the Meridional Scale of Motion in the Ocean
Secondary Baroclinic Instability Meridional Scale
2009/3/24
The stability of the marginally stable baroclinic wave in a uniform zonal shear flow is studied. Although the single, marginally stable wave on a horizontally uniform baroclinic current has little or ...
Baroclinic Instability in the Denmark Strait Overflow
Baroclinic Instability Denmark Strait Overflow
2009/3/7
Current meter records and hydrographic data taken in the Denmark Strait overflow during a one-month experiment in August-September 1973 are analyzed. Mean conditions indicate that a strong, cold overf...
On the Stability of a Fluid with Specialized Density Stratification. Part II：Mixed Baroclinic-Barotropic Instability with Application to the Northeast Pacific
Density Stratification Mixed Baroclinic-Barotropic Instability Northeast Pacific
2009/2/18
Low-frequency motions (0.25 cpd) have recently been observed in Juan de Fuca Strait. The three-layer model developed in Part I of this paper is used to show that some of this activity may be due to an...
On the Stability of a Fluid with Specialized Density Stratification. Part I：Baroclinic Instability and Constant Bottom Slope
Specialized Density Stratification Baroclinic Instability Constant Bottom Slope
2009/2/16
A three-layer model is used to study the stability of large-scale oceanic zonal flows over topography. The mean density profile employed has upper and lower layers of constant densities ρ1* and ρ3*, r...
The Langmuir Circulation Instability as a Mixing Mechanism in the Upper Ocean
Langmuir Circulation Instability Mixing Mechanism Upper Ocean
2009/2/16
A numerical study of the fully nonlinear instability of the ocean to Langmuir circulations is reported. The extended Craik-Leibovich theory is used to compute the development of a mixed layer in an oc...
An Instability of Packets of Short Gravity Waves in Waters of Finite Depth
Short Gravity Waves Finite Depth
2009/2/13
We consider the stability of a solitary wave packet of short gravity waves propagating in waters of moderate depth. It is shown that such wave packets are unstable to long transverse disturbances. The...
Instability and Splitting of Mesoscale Rings using a Two-Layer Quasi-Geostrophic Model on an f-Plane
Mesoscale Rings f-Plane Two-Layer Quasi-Geostrophic Model
2009/2/10
Asymmetric instability of a circular Gaussian ring and evolution of a ring shape in a nonlinear case are studied using a two-layer quasi-geostrophic model on an f plane. Ring behavior is classified on...
Baroclinic Instability in a Downstream Varying Channel：Shelikof Strait, Alaska
Baroclinic Instability Shelikof Strait Downstream Varying Channel
2009/2/10
Moored current-meter observations obtained from upstream and downstream locations in Shelikof Strait, between Kodiak and Afognak Islands and the Alaskan mainland in the northwest Gulf of Alaska, show...
Instability of Baroclinic Flows with Horizontal Shear Along Topography
Topography Baroclinic Flows Horizontal Shear
2009/2/9
The stability of baroclinic flows with horizontal shear over sloping topography is analyzed with special emphasis on the structure and energetics of the unstable perturbatiorts. The study is conducted...