Ocean Chemistry.

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Presentation transcript:

Ocean Chemistry

Forschammer - Law of Constant Proportions Ratio of ions  Na+ : Cl- : SO4-- : Mg++: K+ : Ca++ :CO3-- Constant - worldwide Calculation of salinity from chlorinity chlorinity - wt. of Cl-, Br-, I- ions Salinity % = 1.80655 x chlorinity

Residence time = AMOUNT OF ELEMENT IN OCEAN Residence time = AMOUNT OF ELEMENT IN OCEAN RATE OF ADDITION OR REMOVAL Cl- 100 x 106 yrs Na+ 68 x 106 yrs Mg(++) 13 x 106 yrs Carbonate 110 x 103 Iron 200

Cycling of Sea Salt Volcanic activity Sediments uplifted H2S Rainfall Volcanic activity Cl- SO4-2 Sediments uplifted River discharge & runoff Ca+2 K+ Mg+2 CO3-2 Ca+2 SO4-2 Mg+2 N+ Organisms die adsorbed by clays Leaching from rocks precipitation Bottom sediments

Importance of CO3-- CO3--