Accession Number:

AD0632912

Title:

THE EFFECT OF WIND SPEED ON THE SPATIAL CORRELATION OF AMBIENT NOISE,

Descriptive Note:

Corporate Author:

NAVY UNDERWATER SOUND LAB NEW LONDON CONN

Report Date:

1966-05-09

Pagination or Media Count:

17.0

Abstract:

Measurements of spatial correlation of ambient noise have been made in Bermuda over an 18-month period by means of a deep-water, bottom-mounted, vertical hydrophone array. Comparisons of these mean correlation values with theoretical values, which are based upon a surface-generated directional noise model, have been made for four frequency bands with wind speed as a parameter. The experimental and theoretical values show excellent agreement for frequency bands of 400-600 cps, 600-800 cps, and 800-1000 cps, regardless of the wind-speed conditions. For the frequency band of 200-400 cps, the agreement is wind-speed dependent Better agreement is obtained at the higher wind speeds. These results serve to verify the applicability of the noise model for the higher frequencies 400-600 cps, 600-800 cps, and 800-1000 cps and for the low frequencies 200-400 cps when the surface noise levels are high enough to predominate over any horizontal noise components. Author

Subject Categories:

  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE