Accession Number : AD0876730
Title : Low-Frequency Sound Attenuation in Open Water.
Descriptive Note : Technical publication, Jun 69-Jun 70,
Corporate Author : NAVAL UNDERSEA RESEARCH AND DEVELOPMENT CENTER SAN DIEGO CA
Personal Author(s) : Duykers, L. R. B.
Report Date : OCT 1970
Pagination or Media Count : 31
Abstract : A relaxation process, based on organic particulate matter (plankton) in open water, is described and theoretically derived. It is similar to a theoretically derived and experimentally verified process in aerosols and relates relaxation time to shear (Stokes) force. The derived formulas are applied to demonstrate probable significant differences among low-frequency sound-attenuation values in various water masses. (Author)
Descriptors : (*UNDERWATER SOUND, SOUND TRANSMISSION), ATTENUATION, LOW FREQUENCY, PLANKTON, ABSORPTION, ORGANIC MATERIALS, VISCOSITY, TEMPERATURE, SEA WATER.
Subject Categories : Acoustics
Distribution Statement : APPROVED FOR PUBLIC RELEASE