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Gregory F. de Souza, Ben C. Reynolds, Jörg Rickli, Martin Frank, Mak A. Saito, Loes J. A. Gerringa and Bernard Bourdon Southern Ocean control of silicon stable isotope distribution in the deep Atlantic Ocean Global Biogeochemical Cycles 26

Version of Record online: 19 JUN 2012 | DOI: 10.1029/2011GB004141

Key Points

  • Deep Atlantic Ocean displays gradient in Si isotopic composition of silicic acid
  • The gradient is caused by quasi-conservative mixing of Si from NADW and AABW
  • Contrasting isotope signature of NADW and AABW due to interaction of biology and MOC

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