J. M. Berkson
Naval Res. Lab., Washington, DC 20375
A. Kristensen
M. Max
SACLANT Undersea Research Ctr., 19138 LaSpezia, Italy
T. W. Yates
G. M. Vermillion
Vector Res., Rockville, MD 20852
Shallow-water acoustic and geoacoustic measurements were made in the southwest margin of the Adventure Bank area of the Strait of Sicily in a region having about 120-m water depth and a generally smooth calcareous sand seafloor. Concurrent propagation and reverberation experiments were conducted using horizontal and vertical array receivers with both broadband explosive and controlled narrow-band sources. Propagation is frequency dependent with minimum transmission loss at long range occurring in the frequency band 200--800 Hz. Overall reverberation envelope of duration was about 60 s and includes both diffuse returns and arrivals from major bathymetric features. [Work supported by ONR.]