Accession Number:

ADA024713

Title:

Acoustic and Related Properties of the Sea Floor: Sound Attenuation as a Function of Depth.

Descriptive Note:

Research and Development rept. Jan 74-Jun 75,

Corporate Author:

NAVAL UNDERSEA CENTER SAN DIEGO CALIF

Personal Author(s):

Report Date:

1975-07-01

Pagination or Media Count:

23.0

Abstract:

The general objectives of this investigation were to determine and study those characteristics of the sea floor that affect sound propagation and the prediction of sonar performance to support underwater acoustics experiments and theory by furnishing information on the mass physical properties of sediments and rocks in the form of geoacoustic models of the sea floor and to develop models of the sea floor which include gradients of sound velocity and attenuation, density, and elastic properties. Specifically, the minor objectives were to revise and review earlier work on the relations between frequency and attenuation of compressional sound waves in marine sediments and on the relations between attenuation and sediment porosity. The major objectives were to determine and predict variations of the attenuation of sound waves with depth in the sea floor.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Acoustic Detection and Detectors
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE