Internal wave beam propagation in non-uniform stratifications

Internal wave beam propagation in non-uniform stratifications

In addition to being observable in laboratory experiments, internal wave beams are reported in geophysical settings, which are characterized by nonuniform density stratifications. Here, we perform a combined theoretical and experimental study of the propagation of internal wave beams in nonuniform density stratifications. Transmission and reflection coefficients, which can differ greatly for di...

Non-Reflecting Internal Wave Beam Propagation in the Deep Ocean

It is well-known that internal waves can propagate downwards in the interior of the oceanic (e.g. Gill, 1982) and this process has been studied experimentally in the laboratory (e.g. Stevens and Imberger, 1994). Moreover, it is well-known that a monochromatic internal wave is an exact solution of the fully nonlinear Euler equations for a stratified fluid (in the Boussinesq approximation) with a...

Generation, propagation, and breaking of an internal wave beam

We report upon an experimental study of internal gravity waves generated by the large-amplitude vertical oscillations of a circular cylinder in uniformly stratified fluid. Quantitative measurements are performed using a modified synthetic schlieren technique for strongly stratified solutions of NaCl or NaI. The oscillatory forcing leads to the development of turbulence in the region bounding th...

Internal wave energy flux from density perturbations in nonlinear stratifications

Frank M. Lee1, Michael R. Allshouse2,3†, Harry L. Swinney2 and Philip J. Morrison1 Institute for Fusion Studies and Department of Physics, University of Texas at Austin, Austin, TX 78712, USA Center for Nonlinear Dynamics and Department of Physics, University of Texas at Austin, Austin, TX 78712, USA Department of Mechanical and Industrial Engineering, Northeastern University, Boston, MA, 02115...

Numerical Study of Wave Propagation in a Non-uniform Flow