Internal-wave transmission across a stratification step
= Internal-wave transmission across a stratification step
At a step in <buoyancy frequency> without a jump in background <mass density>, vertical <velocity> and <fluid pressure> are continuous. For a fixed horizontal <wavenumber> and <angular frequency>, these are continuity of $W$ and $W'$. They determine reflection and transmission between propagating <internal gravity waves> and <evanescent waves>.