在大洋,不同方向的风产生的风海流的风因子和流偏角接近常值。在近海,由于海岸和海底地形的影响,在垂直海岸的方向上,风海流的发展常常受到海岸的限制。相反,在沿岸或接近沿岸的方向上,由于海水堆积或减少形成倾斜流,从而使海流增大。结果在近海,不同方向的风所产生的海流的流偏角和风因子都不会是定值,这时近岸风海流矢量的矢端连线构成一椭圆,人们称之为风海流椭圆。这一事实已为许多观测所证实。要获得某一海 In the oceans, the wind factors and runoff angles generated by the winds in different directions approach the normal values. Offshore, the development of wind currents is often limited by the coast due to the influence of coast and seabed topography in the direction of the vertical coast. Conversely, in the coastal or near-shore direction, ocean currents increase due to the accumulation of seawater or the formation of an inclined flow. As a result, neither the declination nor the wind factor of ocean currents generated by the winds in different directions in offshore and in the opposite direction will be fixed. At this moment, the vector-end connection of the coastal currents vectors of the nearshore constitutes an ellipse, which is called the wind-sea flow ellipse. This fact has been confirmed by many observatories. To get some sea