How fast do currents move?



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    The speed of currents depends on if it is a surface current or deep water current. The speed of currents on the surface depends mostly on the speed of the wind blowing on the surface of the ocean.  For the lower layers, currents form when friction from the layers above push the water. Hence, the lower layers moves slower than the higher layers above. The general formula is that for every 10 hours the wind blows across the ocean surface, the surface waters will flow at about 2% of the wind speed.

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