Accession Number : AD0701671

Title :   NEAR-GRAZING, SPECULAR SCATTERING OF UNDERWATER SOUND FROM SEA AND SWELL.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : Mayo,Ned Henderson

Report Date : DEC 1969

Pagination or Media Count : 84

Abstract : 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)

Descriptors :   (*SONAR, PERFORMANCE(ENGINEERING)), (*UNDERWATER SOUND, SCATTERING), SOUND TRANSMISSION, OCEAN WAVES, INTERFACES, OCEAN MODELS, REFLECTION, POWER SPECTRA, WIND, STATISTICAL PROCESSES, HYDROPHONES, THESES

Subject Categories : Acoustic Detection and Detectors
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE