白洋淀内水体的流动特征研究

研究了风对白洋淀内水体循环流动的影响,研究指出：(1)风应力可看作是水体循环的主要驱动力. (2)在风应力的作用下,水体表层的流动主方向与风的方向一致,下层水体的流动方向与表层方向相逆或近似相逆. (3)表层以下水体流动复杂,次表层水平流动有明显的双涡结构. (4)淀底地形对水体垂向流动影响很大,垂向速度变化复杂,垂向上有双涡流动现象. 从动力学角度研究了淀内水体流动的情况.

A Study on the Water Flow in Baiyangdian Lake

A study on the influence of wind stress on the flow character of water in Baiyangdian Lake is carried out, and we arrive at some important conclusions. These are: (1) wind stress can be regarded as the main driving force of the water circulation flow; (2) the water flow direction of surface layer is the same direction as the wind moves, while direction of the layers below is on the contrary or is almost inversed; (3) the flow character of water beneath the surface layer is complex. Double eddies can be seen evidently on the second horizontal layer; (4) the topography influences the vertical flow heavily, double eddies can also be seen in the complex vertical direction. The dynamic character of water in Baiyangdian Lake is studied in this paper, which laid a solid foundation for the further researches on biology.