Abstract
The results of experiments designed to measure the characteristics of channel reverberation in shallow water (30‐m water depth) are presented along with supporting environmental data. The acoustic data were obtained using long continuous wave pulses with a monostatic transmitter and receiver system from a fixed platform in the North Sea. The characteristic values of channel reverberation such as frequency shift, linewidth, and reverberation time are described as a function of frequency (500 Hz to 10 kHz) and the wind‐induced surface roughness. It is also shown for a more limited set of environmental data that channel reverberation is dependent on the angle between the acoustic propagation and the direction of the surface waves. The linewidth and the reverberation decay time show a strong dependence on frequency and surface roughness. These dependencies are presented for various sets of environmental parameters. [Work supported by MOD. West Germany.]
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