Baloza, Marwa; Maier, Sandra; Hanfland, Claudia; Henkel, Susann; Kasten, Sabine; Richter, Claudio; Holtappels, Moritz (2025): Oxygen profiles and pore-water geochemistry of surface sediments collected from the southern Weddell Sea shelf [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.987276
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Published: 2025-12-03 • DOI registered: 2025-12-03
Abstract:
During the PS111 research cruise with the German research vessel RV POLARSTERN (January 2018- March 2018), sediments were collected with a multicorer from 15 stations, i.e., four on the eastern Weddell Sea shelf at 387 to 663 m water depth, five in the Filchner Trough at 794 to 932 m water depth, and four along the western Weddell Sea shelf at 332 to 660 m water depth. Two deeper stations were located on the eastern Weddell Sea slope at 1405 and 1775 m water depth. A total of 28 high-resolution O2 profiles were measured in the upper sediment layer using optical microsensors (Optodes, Pyroscience) in order to determine diffusive oxygen uptake (DOU). Pore-water samples were taken at depth resolutions of 1 cm from 0-10 cm and below 10 cm with a resolution of 2 cm down to a maximum depth of 35 cm. Pore-water analyses of dissolved iron (DFe), manganese (DMn), sulfate (SO42-), and nutrients such as ammonium (NH4+), phosphate (PO43-), nitrate (NO3-), nitrite (NO2-), and silicate (SiO32−) were measured.
Keyword(s):
Funding:
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AWI_PS111_00: Microplastics - A Potential Threat to the Remote and Pristine Ecosystems of the Antarctic Seas?
Coverage:
Median Latitude: -74.764637 * Median Longitude: -34.941407 * South-bound Latitude: -77.800000 * West-bound Longitude: -60.000000 * North-bound Latitude: -70.090000 * East-bound Longitude: -6.850000
Date/Time Start: 2018-01-28T00:00:00 * Date/Time End: 2018-03-01T13:29:31
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Size:
2 datasets
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Datasets listed in this bundled publication
- Baloza, M; Maier, S; Hanfland, C et al. (2025): Oxygen profiles of surface sediments retrieved from the southern Weddell Sea shelf during RV POLARSTERN cruise PS111. https://doi.pangaea.de/10.1594/PANGAEA.987279
- Baloza, M; Maier, S; Hanfland, C et al. (2025): Pore-water geochemistry of surface sediments retrieved from the eastern continental shelf of the Antarctic Peninsula during RV POLARSTERN cruise PS111. https://doi.pangaea.de/10.1594/PANGAEA.987280