南海温跃层时空分布及其对水下通信的影响

Temporal and spatial distribution of thermocline in South China Sea and its influence on underwater communication

本文利用国家海洋信息中心研制的西北太平洋海洋再分析月平均海温数据,采用垂直梯度法和拟阶梯函数法结合的方法,计算了南海海区温跃层的上界深度、厚度和强度。利用1、4、7和10月的计算结果分别代表冬、春、夏和秋四季,分析了南海温跃层的上界深度、厚度和强度空间分布的季节变化,并初步讨论了温跃层的存在和变化对水下通信以及水下航行器隐蔽深度的影响。

In this paper, use the method of vertical gradient and quasi ladder function, the depth, thickness and intensity of the upper boundary of the thermocline in the South China Sea are calculated by using the monthly mean sea surface temperature data of the Northwest Pacific Ocean reanalysis developed by the National Oceanic Information Center. Based on the results of January, April, July and October, which respectively represent the four seasons of winter, spring, summer and autumn, the seasonal variation of the spatial distribution of the depth, thickness and intensity of the upper boundary of the thermocline in the South China Sea is analyzed, and the influence of the existence and variation of the thermocline on the underwater communication and the concealment depth of the underwater vehicle is preliminarily discussed.