摘要
本文根据调查资料分析了长江口及济州岛邻近海域声速随深度、季节、时间及地理位置的变化,计算了跃层的强度、厚度和深度,讨论了声道的类型及其分布。分析表明:调查海区声速的时空变化较大:跃层和声道都有明显的季节变化和区域特性。
The sound speed in sea water is one of the important parameters in the analysis of the sound field in the sea.On the basis of observed data, variations of sound speed with depths, seasons, time and geographic locations are analysed for the region near the estuary of the Yangtze river and for the northwestern pacific ocean. The sound speed gradient and its variation with depth are calculated.The types and distributions of the sound channels are discussed.It is indicated that the spacetime variation is large in the observed region. The sound channel varies with seasons and location.
