C. Staquet, J. Sommeria
We review the mechanisms of steepening and breaking for internal gravity waves in a continuous density stratification. After discussing the instability of a plane wave of arbitrary amplitude in an infinite medium at rest, we consider the steepening effects of wave reflection on a sloping boundary and propagation in a shear flow. The final process of breaking into small-scale turbulence is then presented. The influence of those processes upon the fluid medium by mean flow changes is discussed. The specific properties of wave turbulence, induced by wave-wave interactions and breaking, are illustrated by comparative studies of oceanic and atmospheric observations, as well as laboratory and numerical experiments. We then review the different attempts at a statistical description of internal gravity wave fields, whether weakly or strongly interacting.
@article{18052de9-40b2-4d99-9f82-cffef37635f5,
title={INTERNAL GRAVITY WAVES: From Instabilities to Turbulence},
author={C. Staquet and J. Sommeria},
year={2002},
language={fr}
}TY - JOUR TI - INTERNAL GRAVITY WAVES: From Instabilities to Turbulence AU - C. Staquet AU - J. Sommeria PY - 2002 LA - fr ER -
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