Abstract
The space-time correlations of narrowband acoustic signals propagating in shallow water are theoretically investigated. It is assumed that acoustic field fluctuations are caused by the combined effect of wind waves and random internal waves. The acoustic field is represented as a superposition of two components: one of them is characterized by relatively small space-time scales and is formed by wind waves, whereas the other is characterized by large scales and is caused by both random internal waves and wind waves. A numerical simulation is performed for space and time correlation functions of tone signals under typical conditions of the Barents Sea. It is demonstrated that the results of numerical calculations are in good agreement with experimental data.
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Original Russian Text © M.A. Raevskii, A.I. Khil’ko, 2015, published in Akusticheskii Zhurnal, 2015, Vol. 61, No. 3, pp. 369–376.
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Raevskii, M.A., Khil’ko, A.I. Space-time coherence of low-frequency acoustic waves in a shallow-water area with fluctuating parameters. Acoust. Phys. 61, 340–346 (2015). https://doi.org/10.1134/S1063771015020116
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DOI: https://doi.org/10.1134/S1063771015020116