Bottom Interaction Represented by Impedance Conditions in Normal-Mode Calculations
We have found that a normal mode program designed to treat sound speed profiles of many layers can be extended to model sediment layers below the water. While doing so it is easy to compute reflection coefficients at the interface between water and sediment. A second normal mode program has been developed in the process of developing rigorous control models for use by the Acoustic Model Evaluation Committee. This program uses a bottom loss table similar to that used by ray theory.
KeywordsPhase Velocity Normal Mode Sound Speed Depth Function Reflection Loss
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