Experiments on Sound Propagation over Sloped Bottoms.
Abstract
Experiments to study sound propagation in a shallow water wedge were conducted in tank. Results confirm the assumption of adiabatic normal mode theory that the mode theory that the mode shapes adjust continuously to the local water depth. Mode coupling, if it exists, is negligible. For upslope propagation, the energy of a mode traveling beyond its cutoff depth is directed into the bottom with negligible coupling to lower modes. For downslope propagation, the normal modes in a wedge propagate with curved wavefronts and not with the straight vertical wavefronts of simple adiabatic normal mode theory. In addition, normal modes not present at the source can be 'captured' when the water depth is sufficient to support them. Keywords: Shallow water acoustics; Model propagation; Sound propagation Acoustic waveguide.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 14, 1985
- Accession Number
- ADA163431
Entities
People
- Chris T. Tindle
- Halvor Hobaek
- T. G. Muir
Organizations
- University of Texas at Austin