Abstract
During the summer of 2008 an experiment was conducted that included both chirp and M‐sequence transmissions at 16‐kHz center frequency. Source and receiver arrays were located west of Kauai Island HI, along an isobath of about 100 m. Moored thermistor strings and a wave‐rider buoy provided detailed oceanographic data, while shipboard measurements recorded wind variations. Micro‐multi‐paths were observed from single surface bounces, and their variability has been examined for a variety of surface wave conditions. A surface wave model has been integrated into a parabolic equation model (MMPE) to approximate variations in the micro‐multi‐path structure over geotime. Model results are used to examine the correlation between environmental variability and observed single‐bounce signal fluctuations. Comparisons are made with a variety of surface wave conditions, including both calm and rough seas. [Work supported by ONR 321OA.]
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