Shallow Water Propagation
Abstract
The long-term goals of this research are to develop methods for deterministic and stochastic acoustic calculations in complex shallow water environments, specify their capabilities and accuracy, and use them to explain experimental data on the physical mechanisms of propagation. Specific objectives are as follows: (1) Treat propagation from narrowband and broadband sources over elastic and poro-elastic sediments, and incorporate realistic bathymetric, topographic, and geoacoustic variations; and (2) Quantify acoustic interactions with physical features in the ocean volume and with geoacoustic features of the ocean sediment, and analyze and interpret experimental data. We did the following: developed efficient and accurate parabolic equation (PE) techniques for propagation through heterogeneous sediments; treated range dependence and sediment layering using single scattering and energy conservation methods; benchmarked the results using data and special high-accuracy solutions; constructed representations for ocean environmental and geoacoustic variability using data and parametric models; determined acoustic fields with PE, normal mode, and other approximation methods; and used experimental data and computational results to assess propagation mechanisms.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 2013
- Accession Number
- ADA598361
Entities
People
- Kara G. Mcmahon
- William L. Siegmann
Organizations
- Rensselaer Polytechnic Institute