Ship waves and lee waves.

Three-dimensional internal trapped lee wave modes produced by an isolated obstacle in a stratified fluid are shown to have dynamics analogous to surface ship waves on water of finite depth. Two models which allow for vertical trapping of wave energy are treated in detail: 1) uniform upstream flow and stratification bounded above by a rigid lid; and 2) a semi-infinite fluid of uniform stability, with wind velocity increasing exponentially with height. This second model is taken as representing the atmosphere.-from Authors