Abstract
Sediment acoustics experiments in 1999 (SAX99) and 2004 (SAX04) were conducted in shallow water off the Florida Panhandle near Fort Walton Beach, Florida. Measurements were made of the frequency dependence of sound speed and attenuation in sandy sediments, supplemented by detailed environmental characterization. Following SAX99 laboratory measurements were conducted to further investigate the physical mechanisms contributing to the frequency dependences observed. An overview will be given of these sound speed and attenuation results, and the implications for sediment acoustics modeling will be discussed. [Work supported by ONR.]
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