搜索结果: 1-15 共查到“海洋科学 vortex”相关记录19条 . 查询时间(0.062 秒)
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 ...
Current velocities and water temperatures were observed in southern Lake Michigan with an array of AMF vector-averaging current meters during late spring, summer and fall 1976. Analyses of the recorde...
Nonlinear Waves and Coherent Vortex Structures in Barotropic β-plane Jets
Nonlinear Waves Barotropic β-plane Jets Coherent Vortex Structures
2009/1/8
We examine the nonlinear evolution of barotropic β-plane jets on a periodic domain with a pseudospectral. A calculation of the linear growth rate yields an infected U-shaped curve on the β versus k0 p...
The problem of geostrophic adjustment, originally considered by C.G. Rossby, is solved in an axisymmetric geometry for a continuously stratified fluid, where the adjusted final state is in hydrostatic...
The Halting Effect of Baroclinicity in Vortex Merging
Baroclinicity Vortex Merging quasigeostrophic merging dynamics
2008/12/19
We study the quasigeostrophic merging dynamics of axisymmetric baroclinic vortices to understand how baroclinicity affects merging rates and the development of the nonlinear cascade of enstrophy. The ...
Topographic Forcing of Coastal Mesoscale Phenomena：Filamentation, Vortex Formation, and Eddy Detachment
Filamentation Vortex Formation Eddy Detachment Coastal Mesoscale Phenomena
2008/12/16
Using the methodology of contour dynamics on a quasigeostrophic model, the nonlinear evolution of a coastal potential vorticity front over a Gaussian topographic feature in the presence of an overlyin...
Geostrophic Vortex Merger and Streamer Development in the Ocean with Special Reference to the Merger of Kuroshio Warm Core Rings
quasigeostrophic shallow-water Kuroshio Warm Core Rings Geostrophic Vortex Merger
2008/12/11
A simple, quasigeostrophic, two-layer model was used to study the interactions of two like-signed vortices and streamer development in the ocean. In particular, models corresponding to the observed me...
The Formation of Oceanic Eddies in Symmetric and Asymmetric Jets. Part II：Late Time Evolution and Coherent Vortex Formation
quasigeostrophic Late Time Evolution Coherent Vortex Formation Oceanic Eddies
2008/12/10
The dynamical processes involved in eddy genesis, evolution, and demise as revealed in a series of high-resolution numerical simulations of perturbed oceanic jets are investigated. Comparisons are pro...
The Self-Propagating Quasi-Monopolar Vortex
self-propagate oceanographic significance vorticity equation
2008/11/6
If an azimuthally symmetric barotropic eddy on the f plane is subject to a relatively small amplitude disturbance of unit azimuthal wavenumber (m = 1), it can propagate very many diameters away from i...
Regions of negative vorticity are observed to trap and amplify near-inertial internal waves, which are sources of turbulent mixing 10–100 times higher than typically found in the stratified ocean inte...
Nonlinear, quasigeostrophic, f-plane vortices in two layers over a topographic slope are considered. Scaling arguments suggest two parameters that dictate the effective strength of the slope: the firs...
The Net Advective Effect of a Vertically Sheared Current on a Coherent Vortex
Net Advective Effect Vertically Sheared Current Coherent Vortex
2008/8/12
The nonlinear interaction of a localized vortex with a vertically sheared mean flow has been studied using numerical and asymptotic methods in a multilayer quasigeostrophic model on the beta plane.
Experiment on the Self-Propagating Quasi-Monopolar Vortex
Self-Propagating Quasi-Monopolar Vortex
2008/7/22
The aim of this contribution is to present the results of laboratory experiments on the dynamics of basic self-propagating vortices generated in a large volume of fluid when a linear (P) and an angula...
Influence of a Strong Bottom Slope on the Evolution of a Surface-Intensified Vortex
Strong Bottom Slope Surface-Intensified Vortex
2008/7/10
The authors investigate the influence of steep bottom topography on the propagation of a vortex in a two-layer quasigeostrophic model. The vortex is intensified in the upper layer and the planetary be...
Near-Inertial Oscillations of a Barotropic Vortex: Trapped Modes and Time Evolution
Near-Inertial Oscillations Barotropic Vortex Trapped Modes Time Evolution
2008/7/10
Amplified motions in vortices have been observed in Gulf Stream rings and over seamounts. This paper uses the near-inertial oscillation approximation to model near-inertial motions in the presence of ...