Unformatted text preview: upwelling region in the world because it is the only way for water under 200M to reach the surface Density currents: Thermohaline Circulation- When water freezes it deposits the salt and water below the ice sinks and when the ice thaws it absorbs the salt and begins to rise Warm water floats/Cold water sinks/Fresh water floats/Salty water sinks #1: Upwelling at the equator from wind/heat, down at high latitudes, turns in 100 years! #2: Seasonal (down in winter hemisphere) Driven partly by cooling and evaporation, partly by formation of ice sheets #3 = Conveyor Belt current in Atlantic Ocean- Shows downwelling in the Atlantic Ocean...
View Full Document
This note was uploaded on 01/16/2012 for the course GEOS 212 taught by Professor George during the Fall '08 term at Arizona.
- Fall '08