An Experiment in High-Frequency Sediment Acoustics: Sax99

Abstract

A major high-frequency sediment acoustics experiment was conducted in shallow waters of the northeastern Gulf of Mexico. The experiment addressed high-frequency acoustic backseattering from the sea oor, acoustic penetration into the sea oor, and acoustic propagation within the seafloor. Extensive in situ measurements were made of the sediment geophysical properties and of the biological and hydrodynamic processes a ecting the environment. An overview is given of the measurement program. Initial results from APL-UW acoustic measurements and modelling are then described.