Acoustic-Elastic Scattering Predictions and Experimental Verifications via Water Tank Experiments
NAVAL RESEARCH LAB STENNIS SPACE CENTER MS SEAFLOOR SCIENCES DIRECTORATE
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We are beginning a new series of laboratory acoustic experiments that will examine the detailed physics of acoustic-elastic scattering. These experiments will measure up-scattered acoustic waves, down-scattered elastic waves, and scattered interface waves from edges and embedded objects using a variety of is sensors. One of our goals is to verify a density-contrast hypothesis upon which the Wedge Assemblage numerical rough-interface scattering model is based and which is applicable to many sector acoustic environments. We are predicting some of these experimental results with calculations using fin finite difference FD codes that are designed for 2 and 3-D acoustic and 2-D elastic environments.