Abstract
Measurements of the ambient noise spectrum level N with simultaneous, coincident wind and wave measurements were made from RP Flip in Fall 1991. The measurements were designed to investigate the correlation between the ambient noise and surface wave parameters. The results suggest that wave parameters related to the incidence of wave breaking correlate well with the ambient noise level. The correlation between N and the RMS wave amplitude a was found to be poor but that between N and the RMS amplitude of the local wind sea aw was comparable to that between wind speed U and N. Similar good correlations were found between the RMS wave slope s and N, and the higher frequency surface wave spectral levels and N. Correlations between the surface wave dissipation estimates D based on the Hasselmann (1974) and Phillips (1985) models and the ambient noise were comparable to those between the wind speed and N. The mean square acoustic pressure was found to be proportional to D with n in the range 0.6 0.8. The implications of these results for monitoring surface waves and air-sea fluxes are discussed.
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