OCEAN CURRENTS Chapter 14.

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Presentation transcript:

OCEAN CURRENTS Chapter 14

Surface currents Caused by: Wind Coriolis effect shape of continents Gyre- rotation of surface current

Wind belts

North Atlantic Gyre Most gyres are made Of 4 currents Gulf stream N. Atlantic Canary N. Equatorial

Columbus’s voyage Which currents did he use? Which direction took longer?

North Pacific Gyre “Garbage patch” 3 million tons Mainly plastic http://www.youtube.com/watch?v=xc6LvdsyJ4U&feature=related&safety_mode=true&persist_safety_mode=1&safe=active “Garbage patch” 3 million tons Mainly plastic Twice size of Texas http://www.youtube.com/watch?v=tnUjTHB1lvM

Surface currents Heat flows from hot to cold Equator to poles Moderates global climate

Gulf Stream Warm current Intensifies Hurricane strength

Do you see a problem?

Deep Currents Thermohaline circulation- caused by density and temp. difference Salty water sinks; cold water sinks Global conveyor belt

Currents regulate Earth’s climate

Scenerio In May 1999 , 21 deck containers of Nike tennis shoes were lost overboard during a storm. This happened off the coast of Korea. Where would you expect these shoes to wash up? Which current would take them to their final destination?

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