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

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)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1969
Accession Number
AD0701671

Entities

People

  • Ned Henderson Mayo

Organizations

  • Naval Postgraduate School

Tags

DTIC Thesaurus Topics

  • Diffraction
  • Frequency
  • Frequency Shift
  • Intensity
  • Measurement
  • Probability
  • Scattering
  • Spectra
  • Surface Waves
  • Underwater Sound
  • Waves

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering