Hydrochemistry measured on water bottle samples during POLARSTERN cruise ANT-VIII/2 ...

• Main Authors: Mackensen, Andreas, Hubberten, Hans-Wolfgang, Scheele, Norbert, Schlitzer, Reiner
• Format: Dataset
• Language: English
• Published: PANGAEA 1996
• Subjects: Event label; Date/Time of event; Latitude of event; Longitude of event; Elevation of event; DEPTH, water; Pressure, water; Temperature, water, potential; Salinity; Oxygen; δ13C, dissolved inorganic carbon; δ18O, water; Δδ13C; Phosphate; Multiple investigations; MultiCorer; CTD/Rosette; Water sample; CTD, Neil Brown, Mark III B; Oxygen, Winkler Culberson, 1991, WOCE Report 68/91; Mass spectrometer Finnigan MAT 252; Mass spectrometer Finnigan Delta-S; Calculated after Broecker & Maier-Reimer 1992; Continuous Flow Analysis; ANT-VIII/2; ANT-VIII/3; Polarstern; Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo; South Atlantic in Late Quaternary Reconstruction of Budget and Currents SFB261; Southern Ocean; Weddell Sea
• Online Access: https://dx.doi.org/10.1594/pangaea.761833; https://doi.pangaea.de/10.1594/PANGAEA.761833

On a section between 72°S and 42°S and a transect between 60°E and 10°E through the Weddell Sea and the southernmost eastern Atlantic Ocean, the water column was sampled on 72 stations, and the stable carbon isotopic composition of total dissolved inorganic carbon (delta13C(SumCO2)) as well as the stable oxygen isotopic composition of seawater (delta18O) was determined. These data were compared with potential temperature, salinity, dissolved oxygen and phosphate data from the same stations. The observed delta13C(SumCO2)/PO4[3-] relationship in the deep Weddell Sea strongly differs from the global Redfield-driven deep water relationship. We attribute this to enhanced thermodynamic fractionation at sites of bottom water formation that decouples the nutrient signal from the delta13C(SumCO2) signal not only in surface and intermediate water masses but also in deep and bottom water. Different, water-mass specific thermodynamic imprints due to different modes of bottom water formation are assumed to cause the ... : Supplement to: Mackensen, Andreas; Hubberten, Hans-Wolfgang; Scheele, Norbert; Schlitzer, Reiner (1996): Decoupling of d13CSUMCO2 and phosphate in recent Weddell Sea deep and bottom water: implications for glacial Southern Ocean paleoceanography. Paleoceanography, 11(2), 203-215 ...