Abstract

During the Basin Acoustic Seamount Scattering EXperiment (BASSEX04), the Five-Octave Research Array (FORA) was deployed near the North Pacific Acoustics Laboratory (NPAL) bottom mounted tomography source just off the coast of Kauai. Receptions from the Kauai source were taken at ranges from 2 km out to 500 km. The data was taken to examine the affects of seafloor interaction on downslope propagation (propagation down both steep and shallow slopes), shallow water range-dependent 3-D propagation and conversion from shallow water propagation to deep water propagation. Conventional and adaptive beamforming results will be presented as well as comparisons between measured responses and PE modeled responses. Geo-acoustic inversions will be performed with the broadband source in end-fire and broadside orientations of the array. [Work supported by ONR Ocean Acoustics.]

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