Abstract
During the Sediment Acoustics Experiment 2004 (SAX04), transmission measurements from 4.5 to 50 kHz were taken on an eight-transducer array buried at an angle of 15 deg using a source mounted on a remotely operated vehicle (ROV). Simultaneously, the reflection coefficient was measured using a three-receiver vertical line array (VLA). Reflection coefficient measurements at angles from 10 to 70 deg were obtained. Environmental characterization of the area has revealed layering effects such as a surficial mud layer, mud inclusions, and depth-dependent sediment properties such as porosity. The consequence of this layering on the variability of the amplitude of reflection coefficient measurements and the time of arrival of transmission measurements will be investigated. [Work supported by ONR, Ocean Acoustics.]
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