Abstract
Literature has shown that wind-generated surface waves are an important factor in determining the spatial coherence of long-range sound propagation [Kuperman and Ingenito, J. Acoust. Soc. Am. 113, 1178–1187 (1977); Zhou et al., J. Acout. Soc. Am. 115, 2550 (2004)]. During the ASIAEX in the East China Sea, wind speed and the rms waveheight were recorded between 29 May and 7 June along with acoustic measurements of broadband explosive sources. The rms surface waveheight varied between 0.1–0.6 m during the acoustic measurements. This paper analyzes the characteristics of vertical coherence of sound propagation under the influence of these surface waves. A model is built to explain observed characteristics of vertical coherence which incorporates coring analysis in the ASIAEX area. [Work supported by ONR.]
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