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台湾海峡是一个平均水深大约在七、八十米以内的狭长海峡。外有黑潮水、南海水入侵;内多为入海径流和闽、浙、粤沿岸水影响,且终年为盛行东北—西南季风的海域。水文要素分布,具有明显的季节变化;冬季海水几呈垂直均匀状态;夏季则出现层化现象。对这样多种水系交汇复杂的海区,要进行温度、盐度质量场的分析研究,在缺乏实测流场资料的情况下,显得十分困难。因此,本文从湍流扩散方程出发,采用有限差分法,对台湾海峡局部海区—闽南渔场的温度,盐度值进行了初步分析。目的在于进一步了解本海区水文要素分布特点及其流系的变化规律,同时,更重要的是,寻找一种计算流向的方法。文章通过温度、盐度值,估算了湍流扩散系数K_H与东向平均速度分量U的比值K_H/U。且在计算出K_H/U的同时,还估算了水平平均流场的流向。这对于没有实测流场资料的海区,给出其流场的平
The Taiwan Strait is a narrow channel with an average depth of about seven to eighty meters. There are Kuroshio and South China Sea water inrush outside; mostly, it is runoff into the sea and water from the coasts of Fujian, Zhejiang and Guangdong, and is dominated by the northeast-southwest monsoon throughout the year. The distribution of hydrological elements has obvious seasonal changes; in winter, the seawater is almost vertical and in summer there is stratification. It is very difficult to analyze and analyze the mass field of temperature and salinity in such a complex sea area where many kinds of water systems converge in the absence of measured flow field data. Therefore, based on the turbulent diffusion equation and using the finite difference method, the temperature and salinity values of the fishing grounds in the Taiwan Strait, the fishing ground in southern Fujian, are analyzed. The purpose is to further understand the distribution characteristics of the hydrological elements in this area and the variation rules of their flow regimes, and more importantly, to find a way to calculate the flow directions. The article estimates the ratio K_H / U of the turbulent diffusion coefficient K_H and the eastward average velocity component U through the temperature and salinity values. And calculate the K_H / U at the same time, also estimated the horizontal average flow field flow. This for the unmeasured data of the sea area, given its flow field flat