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__Divergence Damping__

## Dispersion of gravity-inertia waves alone can explain linear geostrophic adjustment on an infinite plane

## “In a finite domain, unless viscosity is introduced, gravity waves will forever ‘slosh’ without dissipating.” (e.g., Vallis, 1992, JAS)

## Numerical experiments by Farge and Sadourny (1989, J.Fluid.Mech) strongly support the idea of dissipative geostrophic adjustment