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Unformatted text preview: Seasons:-Upwelling stronger in summer months o More energy available in summer (surface heating) o Water is more separated-Winter storms mix layers, o Depends on difference of layers, so it diminishes Annual: La Nina El Nino-Strong Upwelling-Cold surface waters (in Peru)-Nutrient Enrichment-Lots of Anchovies-Weakened Upwelling-Warm surface waters (in Peru)-Loss of nutrients Anchovies leave Seabirds, Seals, and other predators dies Important Points:-Wind + Coriolis (Ekman Transport) cause cold nutrient-rich water to upwell along western coast lines.-Variations on several time scales change strength, duration, and extent of upwelling-Dramatic importance to ecosystems Additional notes from questions:-Winds from south o Downwelling (Prevailing Winds) o Not as common as upwelling o On east side of continents (not sure) Ask about what causes El Nino and La Nina was not very clearly last time...
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This note was uploaded on 04/19/2008 for the course OCEAN 250 taught by Professor Dr.clairehorner-devine during the Fall '08 term at University of Washington.
- Fall '08