Project Bold Venture: Lake Tanganyika Sound Attenuation Experiment.
Abstract
In order to determine the cause of the low-frequency sound attenuation anomaly in seawater, comparative measurements are being made in freshwater. The Lake Tanganyika experiment was conducted to determine the temperature dependency of the anomaly and to overcome the depth limitations of the previous Lake Superior experiment. The sound propagation run was conducted along a 275km track with an average water depth of 750m. Attenuation coefficients were obtained for center frequencies between 800-10,000 Hz in 1/3-oct bands. The results show excess attenuation, but no relaxation frequency can be defined. Comparison is made between the Lake Superior and Lake Tanganyika experiments. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 14, 1972
- Accession Number
- AD0780844
Entities
People
- David G. Browning
- E. N. Jones
- J. M. Gorman
- R. H. Mellen
- W. H. Thorp
Organizations
- Naval Undersea Warfare Center