'The acoustic noise generated by breaking waves in surf conditions'. Funding body: Nuffield Foundation Award.
Ambient noise generated by
breaking waves provides information relating to the amount of energy
that is lost in the breaking process. This energy is important in
coastal seas because it generates turbulence and currents, suspends
sediment and transports it along the coast. This work studies ambient
noise in surf conditions by using an omnidirectional broad-band
hydrophone to listen to the sound generated by waves breaking. Current
and wave height information will be provided by current meters and
pressure sensors respectively. The hydrophone data gives temporal
information on the sound character of individual breakers and is
compared with hydrodynamic and sediment concentration measurements. An
over water video of the sea surface above the hydrophones will provide
independent monitoring of wave breaking conditions.