Abstract: For a highly idealized condition, the spectrum of saturated and unsaturated gravity waves at each height is calculated directly from the wave equation. A principal feature of this wave equation is the inclusion of wave ...

Abstract: For stable stratification, it is pointed out that there exists a strong correlation between the intensity of atmospheric turbulence and the energy dissipation rate ?. It is given in terms of the variance of vertical velocity ...

Abstract: A gap and adjacent bump is predicted to occur in the velocity spectrum of stratified shear flows when the flux Richardson number Rf, ?1/2. This prediction is based on a straightforward solution of the spectral energy balance ...

Abstract: Steepening, harmonics generation, and saturation of a finite amplitude gravity wave are calculated in an approximate fashion by means of a new and elementary approach. The mechanism for these phenomena is nonlinear advection. ...

Abstract: A nonlinear theory of internal gravity waves is extended to slowly varying mean winds u0. This theory determines the wave amplitudes, enhanced diffusion and momentum deposition, for a broad spectrum of waves as well as for ...

Abstract: It is shown that the Lumley-Phillips buoyancy subrange theory predicts the temperature spectrum to be proportional to k?3 at small scalar wavenumbers k?-consistent with oceanic experiments (although those experiments measure ...

Abstract: The vertical turbulent diffusion coefficient in a stably stratified fluid is derived analytically. This derivation does not require that the flux Richardson number be known or specified. The resulting expression for the ...

Abstract: A theoretical investigation is made of turbulence in the buoyancy subrange of stably stratified sheer flows. This theory is based on a new calculation of the buoyancy flux spectrum B (k). In the Lumley-Shur theory, it was ...

Abstract: Attention is called to a recent calculation of the superadiabatic excess?the ratio of wave amplitude at saturation to wave amplitude at convective instability threshold?caused by a saturated gravity wave. (This excess is ...

Abstract: Vertically propagating, compressible, internal gravity waves are shown to have a vertical Stokes drift which is proportional to the vertical wave energy flux. In regions of the atmosphere dominated by upward propagating ...