EOSC 112 Lecture 4: Hydrosphere2_Spring_2017_connect

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EOSC 112 Full Course Notes
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EOSC 112 Full Course Notes
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Following from last class"s discussion of ocean currents on a water-covered planet with no continents, today, we add continents and see what happens. You should aim to be able to develop the likely general pattern of wind-driven surface circulation on a planet with any configuration of continents, taking into account some general principles. Ocean currents influence marine ecosystems, transport heat crucial, and transport goods and people across the oceans. Fisheries (image is a school of anchovies): highly productive marine fisheries occur under quite specific oceanographic conditions. In particular, areas of divergence where wind-driven upwelling brings nutrients to the surface layer are highly productive. These nutrients fuel productivity at the base of the food chain, on which fish depend. Historically, one of the most productive fisheries has been the anchovy fishery off the coast of peru and. This is an eastern boundary current and occurs along the continental margin on the east side of the south pacific.

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