Accession Number : AD0782272

Title :   The Effect of Temperature on Low-Frequency Sound Attenuation in Fresh and Salt Water.

Descriptive Note : Technical memo.,

Corporate Author : NAVY UNDERWATER SOUND LAB NEW LONDON CONN

Personal Author(s) : Jones,E. N. ; Browning,D. G. ; Mellen,R. H. ; Thorp,W. H.

Report Date : 16 DEC 1968

Pagination or Media Count : 9

Abstract : The anomalous attenuation observed both in fresh and sea water at 4C can be described by a relaxation-type expression, with the relaxation frequency equal to 1 kHz. From the limited data available at a different temperature, the activation energy was computed and is of the same magnitude as hydrogen bonding. Further experiments are planned for Lake Tanganyika and the Red Sea to establish the thermal behavior of the 1 kHz absorption.

Descriptors :   *Underwater sound, *Acoustic attenuation, Sea water, Fresh water, Temperature, Low frequency, Magnesium compounds, Sulfates, Red Sea

Subject Categories : Acoustic Detection and Detectors
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE