一种新的声速剖面结构参数化方法

A new model for calculating sound speed profile structure

在Munk模型和GDEM模型的基础上,提出了一种新的声速剖面结构参数化模型,即分层声速剖面模型(LSSPM)。模型用含9个参数的四层分段函数分别描述混合层、主跃层、深海声道层和深海等温层的声速结构,形式简明、直观。数值实验结果表明,LSSPM模型对声速剖面的拟合可达到较高的精度,且对于中国周边的深海和浅海区域有较好的适用性。

A new model for calculating sound speed profile（SSP） structure,namely Layered Sound Speed Profile Model（LSSPM）,is developed based on Munk model and Generalized Digital Environmental Model（GDEM）.In this model,the SSP structure composed of mixed layer,thermocline,deep channel layer and deep isothermal layer is depicted respectively by a set of expressions with 9 coefficients,which have a concise and distinct form.The results of numerical experiments show that LSSPM can provide a precise calculation for SSP fitness,and can be applicable for both deep and shallow sea areas adjacent China.