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Unformatted text preview: Geol 107 L14 9/26/2011 1 Thermohaline Circulation THC Â¡ Â¢conveyor belt cartoonÂ£ IPCC version Wally Broecker, LDEO 2006 Crafoord Prize in Geosciences Thermohaline Circulation (T Í² H) â€¢ The pattern of density Í² driven deep ocean current movement â€¢ Results in (large scale) vertical mixing of the ocean Thermohaline Circulation how it works â€¢ Increases in water density cause water to sink until it reaches water of comparable density â€“ Water in deep oceans gets there because it is most dense (coolest and/or most salty) â€¢ Deep ocean currents move the cold, saline waters around the world http://www.youtube.com/watch?v=nA q9LXLXISk T Í² H vs Surface Circulation â€¢ Flow of deep water does not look like the wind driven surface driven surface currents Geol 107 L14 9/26/2011 2 How fast does T Í² H circulation go? â€¢ Ocean circulation is measured in Sverdrups = 1x10 6 m 3 /sec â€¢ Oceanic thermohaline circulation involves 20 Í² 30 Sv....
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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.
- Spring '11