Accession Number : AD0739320

Title :   Project MASSAWA: Attenuation of Low Frequency Sound in the Red Sea.

Descriptive Note : Technical memo.,

Corporate Author : NAVAL UNDERWATER SYSTEMS CENTER NEW LONDON CONN NEW LONDON LAB

Personal Author(s) : Browning,David G. ; Jones,Everett N. ; LaPlante,Robert F. ; Mellen,Robert H. ; Thorp,William H.

Report Date : 18 NOV 1970

Pagination or Media Count : 8

Abstract : Extensive measurements in the Atlantic Ocean (4 degrees C) have shown the attenuation of sound below 10 kHz to be anomalously high. In order to determine the temperature dependency of this anomaly, a similar experiment has been conducted in the warmer water (22 degrees C) of the Red Sea. The results show a shift in the apparent relaxation frequency from the 1 kHz observed in the Atlantic to 1.5 kHz, resulting in higher values of the attenuation coefficients in the range 1-6 kHz. The computer activation energy is comparable with that expected for hydrogen bonding. (Author)

Descriptors :   (*UNDERWATER SOUND, *RED SEA), LOW FREQUENCY, ATTENUATION, ANOMALIES, SALINITY, TEMPERATURE

Subject Categories : Physical and Dynamic Oceanography
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE