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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.
convection current a current caused by movement by convection of warmer fluid into an area of cooler fluid. direct current a current that flows in one direction only; when modeled as a wave, its amplitude is constant. When used medically it is called galvanic current. This current has distinct and important polarity and marked secondary chemical effects.