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Geography - World & Indian (Ocean currents)-2

Written By STPORTAL on Sunday, March 18, 2012 | 3:01 PM

Geography - World & Indian (Ocean currents):

Major Ocean currents

Current Ocean Type
Agulhas Current Indian Warm
Alaska Current North Pacific Warm
Benguela Current South Atlantic Cool
Brazil Current South Atlantic Warm
California Current North Pacific Cool
Canaries Current North Atlantic Cool
East Australian Current South Pacific Warm
Equitorial Current Pacific Warm
Gulf Stream North Altantic Warm
Humboldt (Peru) Current South Pacific Cool
Kuroshio (Japan) Current North Pacific Warm
Labrador Current North Atlantic Cool
North Atlantic Drift North Atlantic Warm
North Pacific Drift North Pacific Warm
Oyashio (Kamchatka) Current North Pacific Cool
West Australian Current Indian Cool
West Wind Drift South Pacific Cool

El Niño and La Niña
Peruvian fisherman in the late 1800s named the seasonal swing of ocean water "El Niño" (Spanish for the "Christ Child") as it usually occurred around Christmas. A periodic weakening of the trade winds in the central and western Pacific allows warm water to invade the eastern Pacific. Along the Peruvian coast, the encroaching warm water displaces the nutrient-rich north-flowing cold ocean current causing a decline in fisheries. Today, the phenomenon is known as the " El Niño/Southern Oscillation" and we are coming to understand how this change in the seasonal wind and ocean circulation impacts global weather patterns (See December - February conditions; June - August conditions). Cooler than normal ocean temperature in this region is called "La Niña". It too has significant impacts on worldwide weather.
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