Internal Gravity Waves Excited by a Moving Oscillating Source in a Stratified Medium with Variable Buoyancy

Abstract

A problem of a far field generated by internal gravity waves from an oscillating point source of perturbations that moves in a vertically infinite stratified medium with variable buoyancy. For a simulated quadratic distribution of buoyancy frequencies, analytical solutions of the main boundary-value problem are obtained, expressed through parabolic cylinder functions. Asymptotic solutions constructed in this paper make it possible to describe amplitude–phase characteristics of far fields generated by internal gravity waves in a stratified medium with a variable Brunt–Väisälä frequency.