混浊海水声吸收与温度、盐度、压强关系

混浊海水的声吸收和声散射特性对水声探测设备工作性能的影响较大。通过经验公式仿真分析了温度、盐度和压强对低频段、低悬浮泥沙颗粒浓度混浊海水声吸收的影响。结果表明:温度和盐度对混浊海水声吸收的影响较大,而压强对混浊海水声吸收的影响可以忽略。构建并研制了一套混浊海水声吸收特性测量系统,实验研究了温度对混浊海水声吸收的影响,声吸收系数随温度的变化规律与仿真结果吻合较好。此研究成果可对混浊海水中的声传播建模、声纳探测系统设计及声纳性能的评估等提供一定参考。

The correlation of sound absorption in turbid seawater with temperature, salinity and pressure

The properties of sound absorption and sound scattering in turbid seawater have significant effect on the working performance of underwater acoustic detection equipment. The effects of temperature, salinity and pressure on sound absorption in turbid seawater for low frequency and low suspended sediment particle concentration are analyzed by empirical formula simulation. The results demonstrate that the temperature and salinity have much significant effect on sound absorption in turbid seawater the effect of pressure may be neglected. The system for measuring sound absorption in turbid seawater has been built up. The effect of＇temperature on sound absorption in turbid seawater is investigated, and the law that the coefficient of sound absorption changes with temperature coincides well with that from simulation. It is concluded that the results are useful for modeling sound propagation, designing sonar system and estimating sonar performance in turbid seawater.