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Upwelling is an oceanographic phenomenon that involves wind-driven motion of dense, cooler, and usually nutrient-rich water towards the ocean surface, replacing the warmer, usually nutrient-depleted surface water. The increased availability in upwelling regions results in high levels of primary productivity and thus fishery production. Approximately 25% of the total global marine fish catches come from five upwellings that occupy only 5% of the total ocean area. Upwellings that are driven by coastal currents or diverging open ocean have the greatest impact on nutrient-enriched waters and global fishery yields.
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Wind Driven Surface Currents: Upwelling and Downwelling
oceanmotion.org/html/background/upwelling-and-downwelling.htm - Web
Animation demonstrates the upwelling process.
www.classzone.com/.../es2405page01.cfm?chapter_no=visualization - Web
marine.rutgers.edu/coolroom/education/upwelling.htm - Web
Gallery for «Upwelling»
On the influence of large wind farms on the upper ocean circulation. Göran Broström, Norwegian Meteorological Institute,Oslo, Norway
wiki.met.no/_media/windfarms/brostrom_jms_2008.pdf - Web