Ocean gyre
Any large system of circulating ocean surface currents / From Wikipedia, the free encyclopedia
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For other uses, see Gyre (disambiguation).
In oceanography, a gyre (/ˈdʒaɪər/) is any large system of circulating ocean surface currents, particularly those involved with large wind movements. Gyres are caused by the Coriolis effect; planetary vorticity, horizontal friction and vertical friction determine the circulatory patterns from the wind stress curl (torque).[1]
Gyre can refer to any type of vortex in an atmosphere or a sea,[2] even one that is human-created, but it is most commonly used in terrestrial oceanography to refer to the major ocean systems.