Near-Grazing, Specular Scattering of Underwater Sound from Sea and Swell

摘要

The surface of a large, anechoic tank was excited to produce several different anisotropic sea and swell surfaces characterized by 'typical' but distinctive frequency spectra and wave height probability densities. Concurrent measurement was made of 20 second averages of squared surface wave height, and coherent, specularly-scattered sound intensity. Cross-sea scattering consistently produced a slightly stronger coherent component of intensity than scattering in the direction of the sea. (Author)