Oxygen profiles and pore-water geochemistry of surface sediments collected from the southern Weddell Sea shelf
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
2025
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| author | Baloza, Marwa Maier, Sandra Hanfland, Claudia Henkel, Susann Kasten, Sabine Richter, Claudio Holtappels, Moritz |
| author_facet | Baloza, Marwa Maier, Sandra Hanfland, Claudia Henkel, Susann Kasten, Sabine Richter, Claudio Holtappels, Moritz |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_987276 |
| institution | PANGAEA |
| language | en |
| publishDate | 2025 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Oxygen profiles and pore-water geochemistry of surface sediments collected from the southern Weddell Sea shelf Baloza, Marwa Maier, Sandra Hanfland, Claudia Henkel, Susann Kasten, Sabine Richter, Claudio Holtappels, Moritz Antarctic; dissolved iron; dissolved manganese; nutrients; oxygen uptake; shelf sediments 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. |
| title | Oxygen profiles and pore-water geochemistry of surface sediments collected from the southern Weddell Sea shelf |
| topic | Antarctic; dissolved iron; dissolved manganese; nutrients; oxygen uptake; shelf sediments |
| url | https://doi.org/10.1594/PANGAEA.987276 |