Reflection and Refraction of Parametrically Generated Sound at a Water-Sediment Interface
The results of an experimental study of the penetration of highly directional acoustic beams into bottom sediments were recently reported by Muir, Horton, and Thompson [J. Sound Vib. 64, 539–551 (1979)]. Of special interest was the behavior of a narrow beam generated by a parametric source. We have considered this problem theoretically. Simplified equations for the reflected and refracted beams at the water-sediment interface are derived and solved analytically subject to the nondissipative boundary conditions. The range of validity is discussed. Results are presented that seem to explain the experimental observations.
KeywordsIncident Angle Incident Beam Pressure Amplitude Cross Section Model Sediment Interface
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