ON INTERNAL GRAVITY WAVES GENERATED BY SUBMERGED DISTURBANCES
Abstract
The problem of gravity waves generated by a disturbance moving horizontally in a stratified fluid with a free surface has been considered recently by experiments and theory. The linear theory, which considered only the vertical component of the perturbation velocity, found internal waves only on the downstream side of the disturbance. The experiments, however, have disclosed the presence of upstream unattenuated waves (blocking). This report attempts to resolve this issue within the framework of a linearized theory incorporating the Boussinesq and Oseen approximations, and accounting for the blocking effects as essentially horizontal motions. The fluid is assumed unbounded with a constant Vaisala frequency, and the concept of group velocity is used to clarify the physical basis of the solution.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1968
- Accession Number
- AD0674372
Entities
People
- K. K. Wong