Investigation of planktic foraminifera from the Norwegian-Greenland Sea, supplement to: Simstich, Johannes; Sarnthein, Michael; Erlenkeuser, Helmut (2003): Paired d18O signals of Neogloboquadrina pachyderma (s) and Turborotalita quinqueloba show thermal stratification in Nordic Seas. Marine Micropaleontology, 48(1-2), 107-125

Johannes Simstich, Michael Sarnthein & Helmut Erlenkeuser
The vertical density gradients in the Nordic Seas are crucial for the preconditioning of the surface water to thermohaline sinking in winter. These gradients can be reconstructed from paired oxygen isotope data in tests of different species of planktonic foraminifera, the isotopic signatures of which represent different calcification depths in the water column. Comparison of d18O values from foraminiferal tests in plankton hauls, sediment traps, and nearby core top samples with the calculated d18Ocalcite profile...
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