海底、海面的边界反射对浅海环境噪声场的影响
THE EFFECTS OF THE BOUNDARY REFLECTION ON THE AMBIENT NOISE FIELD IN SHALLOW WATER
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摘要: 关于海洋噪声谱级的理论,测量和分析以及相应噪声源的机理探讨已经有大量的工作;例如Knudson[6];EcKarf[2];Weng[10]和Piyyof[7]的工作.文〔1〕采用分层介质中的传播算子,推广了EcKarf的工作,建立了一般情况下由源特性及传播算子所表达的噪声场表示.目前关于传播条件--在浅海中特别是海底的反射特性--对环境噪声场特性的影响还较少有具体的结果.Abstract: According to the theoretical formula given by Talham-Фурдуев, the ambient noise in a shallow-water homogeneous layer was calculated by using the "three parameters model" of the boundary reflection loss. The spectrum property, vertical directionality and the dependence of the noise level on environmental parameters were analysed for 0.3-3.0 KHa frequency range.
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