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对ASIAEX 2 0 0 1南中国海声场与水体相互作用实验的温度场起伏数据和声传播起伏数据进行了分析 ,结果表明 :(1 )内波引起的质点垂直平均位移的峰峰值超过 4 0m ;(2 )由声脉冲前沿传播时间平均起伏所表征的声传播起伏 ,其峰峰值超过 1 0 0ms .在此基础上 ,对温度场起伏数据进行谱分析 ,得到影响海洋起伏的主要内波分量 ;声传播起伏数据经Burg法谱分析反演得到的内波主要周期 ,与温度场的结果一致 .比较了垂直于大陆架方向和平行于大陆架方向的温度场起伏谱结构 ,以及两个方向的声传播起伏谱结构 ;利用脉冲多途结构和脉冲传播时间分别提取声传播起伏信息的参量 ,由其表征的声传播起伏谱结构也进行了比较
The temperature fluctuation data and acoustic propagation fluctuation data of ASIAEX 200 2001 South China Sea sound field interaction with water are analyzed. The results show that: (1) the peak-to-peak vertical displacements caused by the internal waves exceed 40 m; (2) The acoustic propagation fluctuation is characterized by the average fluctuation of the acoustic pulse front propagation time with the peak-peak value exceeding 10 ms. Based on this, the spectral analysis of the temperature fluctuation data is performed to obtain the main internal wave components that affect the oceanic undulation. The main period of the internal wave obtained by Burg analysis is consistent with the result of the temperature field.The structures of the temperature field perpendicular to the continental shelf and the direction parallel to the continental shelf are compared and the acoustic propagation in both directions Fluctuating spectral structure; using pulse multipath structure and pulse propagation time to extract the information of acoustic propagation undulation information respectively, the acoustic propagation fluctuation spectrum structure characterized by it is also compared