一、引言湖泊水体中的温度分层现象是湖泊内热力、动力过程综合作用的结果。在具有不同气候条件、不同深度和几何特征的湖泊内,温度分层现象的发生、发展和消失过程及其空间分布常具有不同的特点。当某一水层内的温度分层现象的强度超过一定数值后,通常把它称为温(度)跃层。在温跃层内,温度的铅直梯度大,水平梯度也经常较大。相应的密度分布也有类似的特点。这里的静力稳定度较大,不利于上下混合交换的进行。这个界面上的波动和动力 I. INTRODUCTION Temperature stratification in lake water is the result of the combined effect of heat and power processes in lakes. In lakes with different climatic conditions, different depths and geometrical characteristics, the occurrence, development and disappearance of temperature stratification and their spatial distribution often have different characteristics. When the intensity of temperature stratification in a water layer exceeds a certain value, it is often referred to as a thermocline. In the thermocline, the temperature of the vertical gradient, the horizontal gradient is often larger. The corresponding density distribution also has similar characteristics. Static stability here is greater, is not conducive to the exchange of mixed up and down. Fluctuation and motivation on this interface