搜索结果: 1-15 共查到“海洋物理学 Flows”相关记录45条 . 查询时间(0.034 秒)
Eddy growth and mixing in mesoscale oceanographic flows
Eddy growth and mixing mesoscale oceanographic flows
2009/11/13
We study the relation between changes in the Eulerian topology of a two dimensional flow and the mixing of fluid particles between qualitatively different regions of the flow. In general time dependen...
The predictability of large-scale wind-driven flows
predictability large-scale wind-driven flows
2009/11/12
The singular values associated with optimally growing perturbations to stationary and time-dependent solutions for the general circulation in an ocean basin provide a measure of the rate at which solu...
Lagrangian characteristics of continental shelf flows forced by periodic wind stress
Lagrangian characteristics continental shelf flows periodic wind stress
2009/11/11
The coastal ocean may experience periods of fluctuating along-shelf wind direction, causing shifts between upwelling and downwelling conditions with responses that are not symmetric. We seek to unders...
On the Stability of Spatially Irregular Coastal Flows, with Application to the Florida Current
Spatially Irregular Coastal Flows Florida Current
2009/2/18
A study is made of the propagation of continental shelf waves and barotropic Rossby waves in a steady, laterally sheared current of the form V + W, where 1 and W is a centered random function repres...
Observations of Interaction between the Internal Wavefield and Low-Frequency Flows in the North Atlantic
Interaction Low-Frequency Flows Internal Wavefield North Atlantic
2009/2/13
A total of four moorings from POLYMODE array I and II were analyzed in an investigation of the interaction of wavefields and mean flow. In particular, evidence for internal wave-mean flow interaction ...
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...
Rossby Wave Driven Eulerian Mean Flows Along Non-Zonal Barriers, with Application to the Hawaiian Ridge
Rossby Wave Non-Zonal Barriers Hawaiian Ridge
2009/2/6
We show that the reflection of baroclinic Rossby waves from a non-zonal barrier generates a Eulerian mean flow along the barrier. In order to produce a mean current of realistic magnitude, friction (i...
Eastward Flows of the South Equatorial Central Pacific
Eastward Flows South Equatorial Central Pacific South Subsurface Countercurrent
2009/2/6
Data obtained during the Hawaii-to-Tahiti Shuttle Experiment in the central Pacific from the Equator to 17°S are used to study the variability of the two eastward flowing currents in the area: the Sou...
A Comparison of Length Scales and Decay Times of Turbulence in Stably Stratified Flows
Length Scales Decay Times Stably Stratified Flows
2009/1/13
An examination of average values of a buoyancy length scale, LR = (/N3)½, and a Thorpe scale, LT, computed from vertical profiles of oceanic turbulence at 150°W in the tropical Pacific Ocean, s...
Effects of Near-Bottom Return Flows on Wind-Induced Currents
Near-Bottom Return Flows Wind-Induced Currents
2009/1/9
Wind, currents, and surface waves have been measured in a circulating wind-wave tank. Conditions corresponding to both coast and ocean, with and without bottom return flows respectively, have been sim...
Hydraulic Control of Flows with Nonuniform Potential Vorticity
Hydraulic Control Flows Nonuniform Potential Vorticity
2009/1/9
The hydraulics of flow contained in a channel and having nonuniform potential vorticity is considered from a general standpoint. The channel cross section is rectangular and the potential vorticity is...
Numerical Simulations of the Effects of Seamounts and Vertical Resolution on Strong Ocean Flows
Numerical Simulations Seamounts Vertical Resolution Strong Ocean Flows
2009/1/5
The effect of seamounts on Gulf Stream-like flow is examined using a quasi-geostrophic modal model that is spun-up from rest with idealized wind forcing. A flat-bottom simulation that resolves the flo...
Deep Planetary Circulation and Topography：Simple Models of Midocean Flows
Deep Planetary Circulation Midocean Flows Topography
2009/1/4
The presence of broad, flowing water masses in the deep ocean requires dynamical explanation. Vertical density diffusion andβ-effect are invoked in classical theories; here we show how topographic pot...
The response of an ocean with a single active dynamical layer (notionally with an infinitely thick upper layer above it, of slightly less density) to localized buoyancy forcing on a beta-plane is cons...
Bottom Stress in Wind-Driven Depth-Averaged Coastal Flows
Bottom Stress Wind-Driven depth-averaged velocity
2009/1/4
The relationship between depth-averaged velocity and bottom stress for purely wind-driven flows in unstratified coastal waters is examined using a one-dimensional (vertically resolving) current model....