The Eulerian and Lagrangian Predictability of Oceanic Flows

2000 ◽  
Author(s):  
Lawrence J. Pratt
Keyword(s):  
Oceanic Flows

Investigation of Coriolis effect on oceanic flows and its bifurcation via geophysical Korteweg–de Vries equation

2020 ◽  
Vol 36 (6) ◽  
pp. 1234-1253
Author(s):  
Turgut Ak ◽  
Asit Saha ◽  
Sharanjeet Dhawan ◽  
Abdul Hamid Kara
Keyword(s):  
Vries Equation ◽  
Coriolis Effect ◽  
De Vries ◽  
Oceanic Flows

Predicting particle trajectories in oceanic flows using artificial neural networks

2020 ◽  
Vol 156 ◽  
pp. 101707
Author(s):  
Matthew D. Grossi ◽  
Miroslav Kubat ◽  
Tamay M. Özgökmen
Keyword(s):  
Neural Networks ◽  
Artificial Neural Networks ◽  
Particle Trajectories ◽  
Artificial Neural ◽  
Oceanic Flows

Laboratory studies of equatorially trapped waves using ferrofluid

1997 ◽  
Vol 338 ◽  
pp. 35-58 ◽  
Author(s):  
DANIEL R. OHLSEN ◽  
PETER B. RHINES
Keyword(s):  
Fluid Dynamics ◽  
Rotation Rate ◽  
Large Scale ◽  
Rossby Waves ◽  
Low Frequency ◽  
Laboratory Studies ◽  
Geophysical Fluid Dynamics ◽  
Vertical Projection ◽  
Planetary Rotation ◽  
Oceanic Flows

We introduce a new technique to model spherical geophysical fluid dynamics in the terrestrial laboratory. The local vertical projection of planetary vorticity, f, varies with latitude on a rotating spherical planet and allows an important class of waves in large-scale atmospheric and oceanic flows. These Rossby waves have been extensively studied in the laboratory for middle and polar latitudes. At the equator f changes sign where gravity is perpendicular to the planetary rotation. This geometry has made laboratory studies of geophysical fluid dynamics near the equator very limited. We use ferrofluid and static magnetic fields to generate nearly spherical geopotentials in a rotating laboratory experiment. This system is the laboratory analogue of those large-scale atmospheric and oceanic flows whose horizontal motions are governed by the Laplace tidal equations. As the rotation rate in such a system increases, waves are trapped to latitudes near the equator and the dynamics can be formulated on the equatorial β-plane. This transition from planetary modes to equatorially trapped modes as the rotation rate increases is observed in the experiments. The equatorial β-plane solutions of non-dispersive Kelvin waves propagating eastward and non-dispersive Rossby waves propagating westward at low frequency are observed in the limit of rotation fast compared to gravity wave speed.

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