Effect of Dissolved Organic Carbon and Alkalinity on the Density of Arctic Ocean Waters
  • 【DOI】

    10.1007/s10498-010-9111-2

  • 【摘要】

    At constant temperature, the density of deep waters in the oceans is higher than that of surface waters due to the oxidation of plant material that adds NO3, PO4, and... 展开>>At constant temperature, the density of deep waters in the oceans is higher than that of surface waters due to the oxidation of plant material that adds NO3, PO4, and Si(OH)4, and the dissolution of CaCO3(s) that adds Ca2+ and HCO3. These increases in the density have been used to estimate the absolute salinity of seawater that is needed to determine its thermodynamic properties. Density (ρ), total alkalinity (TA), and dissolved organic carbon (DOC) measurements were taken on waters collected in the eastern Arctic Ocean. The results were examined relative to the properties of North Atlantic Waters. The excess densities (Δρ?=?ρMeas???ρCalc) in the surface Arctic waters were higher than expected (maximum of 0.008?kg?m?3) when compared to Standard Seawater. This excess is due to the higher values of the normalized total alkalinity (NTA?=?TA 收起<<

  • 【作者】

  • 【刊期】

    Aquatic Geochemistry 2011年4-5期

  • 【语种】

    eng