South Atlantic Gyre
A gyre is large system of rotating ocean currents, particularly those involved with large wind movements. Gyres are caused by the Coriolis Effect.
The South Atlantic Gryre is located in the Southern Hemisphere in between the East coast of South America (Brazil) and the West coast of Africa. Since the South Atlantic Gyre is in the Southern Hemisphere it circulates in a counter-clockwise direction because the Coriolis affect is reversed.
The Brazil current is the South Atlantic Gyre's western boundary current and brings warm equatorial water to the pole. The Benguela current is the eastern boundary current, bringing cold Antarctic water towards the equator. The South Atlantic's northern boundary is the South Equatorial Current and it is bordered on the south by the Antarctic Circumpolar Current. The South Atlantic Gyre is one of 5 major gyres, the others being the North Atlantic Gyre, The Indian Ocean Gyre, the North Pacific Gyre, and the South Pacific Gyre.
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