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AEYFI05(acoustics experiment of yellow sea oceanic front and internal waves)声起伏实验数据分析表明:实验区域明显存在海洋锋面、潮汐、海流变化,这些海洋学过程特别是浅海海流导致了声传播路径上温跃层深度位置、厚度显著变化;观测到跃层变化显著位置导致的简正波声场耦合现象.在脉冲声传播实验中,由于不同号简正波群速度存在差异,耦合信号与非耦合信号在时域上明显被分开,简正波声信号的到达时间结构包含了温跃层水平显著变化位置的信息.对AEYFI05声起伏实验数据进行了深入分析,提出了根据接收耦合简正波声信号的到达时间结构反演温跃层显著变化位置的方法,利用耦合简正波传播时间起伏数据定量反演了海流所致温跃层水平显著变化位置的起伏.
AEYFI05 (acoustics experiment of yellow sea oceanic front and internal waves) acoustic undulation experimental data analysis showed that: there are obvious ocean frontal, tidal and ocean current changes in the experimental area, these oceanographic processes especially shallow sea currents lead to the depth of the thermocline on the sound propagation path The position and the thickness of the coupled acoustic wave are significantly changed.The phenomenon of coupling of the simple acoustic wave field caused by the prominent position of the thermocline is observed.In the experiment of pulsed sound propagation, the coupled signal and the uncoupled signal are obviously separated in the time domain due to the difference of the speed of different normal simple wave groups, The arrival time structure of the simple acoustic signal contains the information of significant changes in the thermocline level. The experimental data of AEYFI05 acoustic undulation are analyzed in depth, and the significant change position of the thermocline is retrieved according to the arrival time structure of the received coupled simple acoustic signal Method, the fluctuation of thermocline levels caused by the sea currents was quantitatively retrieved by using the coupled undrained time-of-flight wave data.