Abstract:
In September 1988 a series of acoustic propagation experiments was conducted in the Hudson Canyon area. It included a synthetic aperture experiment in which a source which transmitted a set of four pure tones was towed toward/away from a vertical array of receivers. The data obtained at 50 and 175 Hz are used to determine the compressional wave-speed profile for the bottom using the modal inverse method. The ability of the inferred model to predict the measured field at 50 Hz and at other higher frequencies is examined. Further, the applicability of the model to a contiguous area is examined to investigate the range-dependent nature of the bottom in the region. [Work supported by ONR.]