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  • ANT-XXIV/3; AWI; Bottle number; CTD/Rosette, ultra clean; CTD-UC; DATE/TIME; DEPTH, water; Elevation of event; Event label; GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes; International Polar Year (2007-2008); IPY; Latitude of event; Longitude of event; Manganese, dissolved; Manganese, standard deviation; Polarstern; PS71; PS71/101-2; PS71/103-1; PS71/104-2; PS71/107-3; PS71/110-1; PS71/113-3; PS71/116-1; PS71/119-1; PS71/122-1; PS71/128-1; PS71/131-5; PS71/135-1; PS71/138-1; PS71/141-1; PS71/144-1; PS71/147-3; PS71/150-2; PS71/161-6; PS71/163-1; PS71/167-1; PS71/175-3; PS71/178-4; Quality flag; South Atlantic Ocean; Weddell Sea  (1)
  • ANT-XXIV/3; AWI_MarGeoChem; Bottle number; Calculated; Calculated from pressure, temperature, and conductivity; CTD/Rosette; CTD-RO; DEPTH, water; GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes; Marine Geochemistry @ AWI; Polarstern; PS71; PS71/108-1; Salinity; see further details; South Atlantic Ocean; Temperature, water, potential; Thorium-234, total; Thorium-234, total, standard deviation; Thorium-234/Uranium-238 activity ratio; Thorium-234/Uranium-238 activity ratio, standard deviation; Uranium-238; Uranium-238, standard deviation  (1)
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  • 1
    facet.materialart.
    Unknown
    (Figure 2) Dissolved manganese concentrations during POLARSTERN Cruise ANT-XXIV/3 (2011)
    PANGAEA
    In:  Supplement to: Middag, Rob; de Baar, Hein J W; Laan, Patrick; Cai, P H; van Ooijen, Jan C (2011): Dissolved manganese in the Atlantic sector of the Southern Ocean. Deep Sea Research Part II: Topical Studies in Oceanography, 58(25-26), 2661-2677, https://doi.org/10.1016/j.dsr2.2010.10.043
    Details
    Publication Date: 2024-06-26
    Description: The first comprehensive dataset (492 samples) of dissolved Mn in the Southern Ocean shows extremely low values of 0.04 up to 0.64 nM in the surface waters and a subsurface maximum with an average concentration of 0.31 nM (n=20; S.D.=0.08 nM). The low Mn in surface waters correlates well with the nutrients PO4 and NO3 and moderately well with Si(OH)4 and fluorescence. Furthermore, elevated concentrations of Mn in the surface layer coincide with elevated Fe and light transmission and decreased export (234Th/238U deficiency) and fluorescence. It appears that Mn is a factor of importance in partly explaining the HNLC conditions in the Southern Ocean, in conjunction with significant controls by the combination of Fe limitation and light limitation. No input of Mn from the continental margins was observed. This is ascribed to the protruding continental ice sheet that covers the shelf and shuts down the usual biological production, microbial breakdown and sedimentary geochemical cycling. The low concentrations of Mn in the deep ocean basins (0.07-0.23 nM) were quite uniform, but some elevations were observed. The highest deep concentrations of Mn were observed at the Bouvet Triple Junction region and coincided with high concentrations of Fe and are deemed to be from hydrothermal input. The deep basins on both sides of the ridge were affected by this input. In the deep Weddell Basin the input of Weddell Sea Bottom Water appears to be the source of the slightly elevated concentrations of Mn in this water layer.
    Keywords: ANT-XXIV/3; AWI; Bottle number; CTD/Rosette, ultra clean; CTD-UC; DATE/TIME; DEPTH, water; Elevation of event; Event label; GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes; International Polar Year (2007-2008); IPY; Latitude of event; Longitude of event; Manganese, dissolved; Manganese, standard deviation; Polarstern; PS71; PS71/101-2; PS71/103-1; PS71/104-2; PS71/107-3; PS71/110-1; PS71/113-3; PS71/116-1; PS71/119-1; PS71/122-1; PS71/128-1; PS71/131-5; PS71/135-1; PS71/138-1; PS71/141-1; PS71/144-1; PS71/147-3; PS71/150-2; PS71/161-6; PS71/163-1; PS71/167-1; PS71/175-3; PS71/178-4; Quality flag; South Atlantic Ocean; Weddell Sea
    Type: Dataset
    Format: text/tab-separated-values, 1980 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 2
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    Unknown
    Radionuclides measured on water bottle samples at station PS71/108-1 (2011)
    PANGAEA
    Details
    Publication Date: 2024-06-26
    Keywords: ANT-XXIV/3; AWI_MarGeoChem; Bottle number; Calculated; Calculated from pressure, temperature, and conductivity; CTD/Rosette; CTD-RO; DEPTH, water; GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes; Marine Geochemistry @ AWI; Polarstern; PS71; PS71/108-1; Salinity; see further details; South Atlantic Ocean; Temperature, water, potential; Thorium-234, total; Thorium-234, total, standard deviation; Thorium-234/Uranium-238 activity ratio; Thorium-234/Uranium-238 activity ratio, standard deviation; Uranium-238; Uranium-238, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 63 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
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