'Ekman spiral' diaporamas de présentation

Chapter 7 Ocean Circulation

Chapter 7 Ocean Circulation. Essentials of Oceanography 7 th Edition. Ocean currents. Surface currents Affect surface water within and above the pycnocline (10% of ocean water) Driven by major wind belts of the world Deep currents Affect deep water below pycnocline (90% of ocean water)

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Ocean Currents

Ocean Currents. Two Types of Currents. Surface Currents Deep water currents- very slow. Surface Currents. Move huge amounts of water Affect the upper 10% of the worlds oceans Move the shallow warm, low density waters Driven by wind. Surface currents. Source of energy. Prevailing Winds

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Forces Affecting Winds

Forces Affecting Winds. Pressure Gradient Force. How does the air move as a result of the pressure gradient force?. (1) Right angle to isobars. LOW PRESSURE. 996hPa. 998hPa. 1000hPa. 1002hPa. HIGH PRESSURE. (2) From high pressure to low pressure. Coriolis Force.

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