L13 Surface Ocean Circulation(1)

L13 Surface Ocean Circulation(1) - Geol 107 L13 Surface...

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Geol 107 L13 9/23/2011 1 Surface Ocean Circulation Prevailing winds drive movement of surface ocean water, forming wind Ͳ driven currents 3 controls on Surface Circulation Prevailing winds make waves and wind Ͳ drift currents Coriolis force causes currents to deflect clockwise or counter Ͳ clockwise and develop Ekman spirals Continental margins deflect and guide currents Atmospheric Circulation Drives Surface Ocean Circulation As the wind blows, so the ocean goes. Prevailing winds make waves and wind Ͳ driven currents current is about 2% of the wind speed 1 m/sec wind will produce a 0.02 m/sec current Surface Ocean Circulation Coriolis force causes Ekman transport Continental margins deflect and guide currents boundary currents Major Surface Wind Patterns Major Surface Current Patterns Gyre Gyre
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Geol 107 L13 9/23/2011 2 Major Surface Current Patterns Note current at an angle to the wind Ekman Transport (Coriolis again!) Coriolis Effect creates Ekman Spiral
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This note was uploaded on 11/21/2011 for the course ECON 404 taught by Professor Carrillo during the Spring '11 term at USC.

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L13 Surface Ocean Circulation(1) - Geol 107 L13 Surface...

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