Modeling of the Acoustic Propagation in Shallow Water Oceanic Regions.
Abstract
The long term goal of this work is to develop a numerical model for studying acoustic propagation in range and depth dependent shallow water environments, with inclusion of bottom effects. In this project, simplified two dimensional models, both analytical and numerical, were developed to study the effect of complex (rigid) bottom topography on the acoustic propagation in an otherwise homogeneous water column. In both cases, a Boundary Integral Equation approach was used. Matching was specified along interface boundaries between the solution in the interior region, with irregular topography, and exterior constant depth radiation regions. Eigenfunction expansions of the solution were used in radiation region. Results were obtained for simple obstacles in an otherwise flat bottom (steps, rectangular obstacles, plus plane slopes and wedges). Using an impedance transfer matrix, the method can also solve problems for an arbitrary combination of steps and wedges.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 08, 1996
- Accession Number
- ADA312639
Entities
People
- Peter R. Stepanishen
- Stephan T Grilli
Organizations
- University of Rhode Island