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Additionally, the surface currents may be very different than currents at depth, which can make launching and recovering submersibles an even greater challenge. Surface currents are generated largely by wind. Their patterns are determined by wind direction, Coriolis forces from the Earthâs rotation, and the position of landforms that interact with the currents. Surface wind-driven currents generate upwelling currents in conjunction with landforms, creating deepwater currents.
You'll need to login or register. Coastal geostrophic currents result from the interaction of wind and runoff along coastlines. Winds blowing parallel to a coastline can cause water to move towards the coastline, which, in turn, creates a pressure gradient that causes water to flow towards the ocean. As the water moves out to sea, the Coriolis effect will deflect it to the right or left, depending on the hemisphere.