Gravity currents and internal waves in a stratified fluid
نویسندگان
چکیده
منابع مشابه
Intrusive Gravity Currents and Internal Gravity Wave Generation in Stratified Fluid
The excitation of internal gravity waves by fluid intrusions that propagate along the interface between a uniform upper layer and a uniformly stratified lower layer is examined by way of laboratory experiments. Intrusions are generated using a simple lock-release apparatus. Experiments are conducted in which the density gradient of the uniformly stratified layer, the density jump across the int...
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Internal tides, generated in the density-stratified ocean by the oscillation of the barotropic tide over bottom topography, play a crucial role in the energy balance of the Earth–Moon system [1]. This has led to a recent revival of the classical topic of internal gravity wave generation by oscillating bodies. Wave energy dissipates owing to wave breaking and suband superharmonic excitation, at ...
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It is shown by way of nonlinear numerical simulations of flow restricted to two dimensions that a compact wavepacket of large-amplitude internal gravity waves incident upon a weakly stratified region in which the buoyancy frequency is less than the frequency of the wavepacket may partially transmit energy into this region through the generation of a wavepacket of lower frequency. In part, the t...
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متن کامل
Internal Gravity Waves
Ocean waves move due to gravity: the water at crests is heavier than the air surrounding it and so it falls, overshoots its equilibrium position and then at a trough feels an upward restoring force. The same phenomena occurs below the ocean surface. Cold water lifted upward into warmer surroundings will feel a downward buoyancy force and downwarddisplaced warm water will feel an upward buoyancy...
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ژورنال
عنوان ژورنال: Journal of Fluid Mechanics
سال: 2008
ISSN: 0022-1120,1469-7645
DOI: 10.1017/s0022112008003984