Abstract
We will report on the results from an experiment off Cape Hatteras, North Carolina, to look at scattering and reverberation from fish schools in the 500–1500 Hz band. The experiment, which was performed during the period May 12–29, 2012, was a joint acoustics, biology, and physical oceanography effort, with distinct, but coordinated, goals in each area. Acoustically, we wished to examine the scattering of sound from fish schools over a full range of azimuthal angles. To do this, we employed a source mounted on an autonomous vehicle and a moored, four element array receiver. The source traveled around the fish school and the receiver, giving the desired angular diversity. Video images, sidescan sonar, and direct sampling of the school allowed us to quantify the in-situ scattering field. Estimates for attenuation and scattering versus azimuthal angle will be presented. Directions for analysis and further research will be discussed.
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