一、引言“锋”是引用气象学的术语.但是,要想给海洋锋下一个简明扼要的定义,还是比较难的.然而,在实践中通过一些共有的特性来认识海洋锋的性质,还是比较容易的.前人通常把海洋锋视为毗邻的不同性质水团水平方向上的边界,或称界面.日本学者宇田道隆称为“流隔或潮隔”.还有一些学者认为是两支流系的相接触线.严格地说,不论是界面或相接触线,都具有一定的宽度,整个宽度称为锋区.锋区具有激烈的水平和垂直方向的对流和混合,且有辐合现象,水体稳定度减少.在整个海洋生物的食物链中,锋区具有较高的生产力.因此,海洋锋为当代渔场海洋学和海洋动力学研究的重要 I. INTRODUCTION “Frontier” is a term that refers to meteorology, but it is still more difficult to give a brief and concise definition of the ocean front, however, some common characteristics are used in practice to understand the nature of ocean front , Is still relatively easy.First, the ocean front usually regarded as adjacent to the different nature of the water level in the horizontal direction of the border, or interface.Japanese scholar Uda Michirion called “flow interval or tide interval.” Still other scholars Strictly speaking, both the interface or the contact line, have a certain width, the entire width is called the front area.Front area has intense horizontal and vertical convection and mixing, and Convergence occurs and the stability of the water body decreases. In the whole food chain of marine life, frontal area has higher productivity, so ocean front is important for the study of oceanography and ocean dynamics in contemporary fisheries