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g104_class21_conveyor_belt

g104_class21_conveyor_belt - Geography 104 Great Ocean...

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Great Ocean Conveyor Belt - illustration of thermohaline circulation - shows link between surface and deep circulation - demonstrates connectivity of the world ocean - transport of energy and biogeochemical tracers - significant link between ocean and climate (weather) Geography 104 - “Physical Geography of the World’s Oceans”
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processes that change temperature (thermo) or salinity (haline) and thus density driven flow winter storms and rapid surface cooling freezing seawater and salt rejection sinking (vertical motion) of near-surface water Thermohaline Circulation
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only very small density changes are needed vertical velocities are small (< 1 m/day) downward movement at one location must be compensated by upward movement (conservation of volume) resulting horizontal velocities small (< 1 cm/s) important for sea life – oxygen moved downward – nutrients moved upward Thermohaline Circulation
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