Calcium-alkalinity relationship in the North Pacific.
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概要
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The dissolution of calcium carbonate in deep ocean water causes variation in calcium concentration (ΔCa) and alkalinity (ΔTA) in the ratio of one to two. The decomposition of organic matter generates nitric acid, phosphoric acid and sulfuric acid. A proton flux which is derived from this process also changes alkalinity. Using the variation in nitrate concentration (ΔNO<SUB>3</SUB>) as an index of the proton flux, the relationship between ΔCa, ΔTA and ΔNO<SUB>3</SUB> is expressed as<BR>ΔCa=0.5ΔTA+0.63ΔNO<SUB>3</SUB><BR>The values of ΔCa obtained from direct measurements in the North Pacific are in good agreement with the values estimated from this equation.
- 日本海洋学会の論文
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