Abstract: It is proposed that shear instability of the upper flank of the equatorial undercurrent may generate, under a broad range of conditions, downward propagating internal gravity waves (IGW) of large amplitude. The generation ...

Abstract: Linear theory for modes in a nonuniformly stratified, semi-infinite shear flow demonstrates that Rayleigh waves (stable waves propagating in fluid with spatially varying shear) couple with evanescent internal waves. If the ...

Abstract: A mechanism is investigated whereby large amplitude internal gravity waves (IGWs) may be excited by the tropospheric jet stream when this is driven to parallel shear instability following a rapid external forcing of the ...

Abstract: Two mechanisms are proposed whereby internal gravity waves (IGW) may radiate from a linearly unstable region of Boussinesq parallel flow that is characterized in the far field by constant horizontal velocity and Brunt-Väisälä ...