1. The Oceans;Sverdrup,1942
2. Deuterium and oxygen-18 variations in the ocean and marine atmosphere;Craig,1965
3. O2 +CH2O→ +CO2 +H2O 2O2 +NH3 +OH− →NO3− +2H2O−ΔO2 = 2ΔNO3− + ΔCO2 ΔNO3−ΔCO2≅ 15/105−ΔO2 = 2 +105/15ΔNO3−−O2 ≅ 9ΔNO3−
4. The influence of organisms on the composition of seawater;Redfield,1963
5. Using the constant of 9 adopted here the preformed nitrate concentration would be: NO3PRE =NO3 −1/9(O2SAT −O2) or NO3 =NO3PRE + 1/9(O2SAT −O2) Substituting in the definition of “NO” yields: ‘NO’ = 9NO3PRE +O2SAT