Acoustic bottom-interacting measurements from the Shallow Water '06 experiment (frequency range 1-20 kHz) are presented. These are co-located with coring and stratigraphic studies showing a thin (20 cm) higher sound speed layer overlaying a thicker (20 m) lower sound speed layer ending at a high-impedance reflector (R reflector). Reflections from the R reflector and analysis of the bottom reflection coefficient magnitude for the upper two sediment layers confirm both these ...
Bottom loss measurements made in the East China Sea in 2001 as part of the Asian Sea International Acoustics Experiment as a function of frequency (2-20 kHz) and seabed grazing angle (15 deg-24 deg) are presented. The measurements are interpreted as estimates of the modulus of the plane wave reflection coefficient, and data are compared to predictions using a reflection coefficient model, based on a two-layered sediment for which sound ...
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