The Attenuation of Underwater Sound. A Review of Experimental and Theoretical Investigations,
Abstract
Experimental and theoretical investigations of the attenuation of underwater sound are reviewed. The historical development followed invited a separation of the study into three frequency ranges: frequencies above 1000 kHz, frequencies between 10 and 1000 kHz, and frequencies below 10 kHz. The known or postulated primary mechanisms of attenuation, namely, viscosity, magnesium sulfate relaxation, and the structural relaxation of water molecules, are discussed. Empirical and theoretical expressions for the attenuation coefficient in sea water are given in terms of the frequency and the environmental parameters of temperature and pressure. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 02, 1970
- Accession Number
- AD0718330
Entities
People
- Richard. B. Lauer
Organizations
- Naval Underwater Systems Center