The Ekman spiral explains why surface currents don’t move exactly with the wind.
埃克曼螺旋解释了为什么表层洋流并不完全沿着风向运动。
In the Northern Hemisphere, the Ekman spiral causes the current direction to rotate clockwise with depth, producing a net transport roughly 90° to the right of the wind.
在北半球,埃克曼螺旋会使洋流方向随深度呈顺时针旋转,并导致净输运方向大致位于风向右侧约 90°。