P. Bouruetaubertot et al., BREAKING AND CASCADE OF INTERNAL GRAVITY-WAVES IN A CONTINUOUSLY STRATIFIED FLUID, Applied scientific research, 51(1-2), 1993, pp. 305-311
The evolution of a few large scale high frequency standing internal wa
ves confined to a vertical plane is studied numerically. The growth of
nonlinear interactions leads to a transfer of energy toward small ver
tical scales and lower frequencies: the result is a steep energy decre
ase due to wave breaking. Induced mixing is evaluated. A parametric fo
rcing is also introduced in order to compare with laboratory experimen
ts. Wave breaking also occurs but as opposed to the unforced case diff
erent phases are next observed: internal wave growth due to constructi
ve forcing alternate with energy decrease.