Pinho, Tainã Marcos Lima; Nürnberg, Dirk; Meckler, Anna Nele; Mollenhauer, Gesine; Müller, Juliane; Lohmann, Gerrit; Lembke-Jene, Lester; Hidayat, Salma; Rigalleau, Vincent; Lamy, Frank; Tiedemann, Ralf (2026): Oxygen and carbon isotopic composition of Neogloboquadrina pachyderma sinistral from the eastern Weddell Sea off Dronning Maud Land, East Antarctica over the last 75 ka [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.992005
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Published: 2026-02-19 • DOI registered: 2026-04-18
Abstract:
Oxygen and carbon isotopic composition (δ18O and δ13C) of Neogloboquadrina pachyderma sinistral from eastern Weddell Sea off Dronning Maud Land. The foraminiferal specimens were selected from gravity core PS128_2-3, which was recovered from Bungenstock Plateau (eastern Weddell Sea off Dronning Maud Land 69.4107°S, 5.5890°W ) from 1868 m water depth during R/V POLASTERN Cruise PS128 in 2022 (Tiedemann and Müller, 2022). Sampling and analytical studies were carried out from ~88 to 434.5 cm core depth at ~1 cm spatial resolution. The records cover the last ~75 kyrs. The stable carbon (δ13C; ‰ VPDB) and oxygen isotope (δ18O, ‰ VPDB) analyses were performed on a Thermo Scientific MAT 253 mass spectrometer with an automated Kiel IV Carbonate Preparation Device. The δ18O data provide stratigraphical information and were used to calculate the ice volume-corrected δ18O of seawater (δ18Osw-ivc; ‰ VSMOW).
Supplement to:
Pinho, Tainã Marcos Lima; Nürnberg, Dirk; Meckler, Anna Nele; Mollenhauer, Gesine; Müller, Juliane; Lohmann, Gerrit; Lembke-Jene, Lester; Hidayat, Salma; Rigalleau, Vincent; Lamy, Frank; Tiedemann, Ralf (2026): Millennial-to-orbital-scale subsurface ocean warming and Polynya formation off Dronning Maud Land during the last glacial. Nature Communications, 17(1), 2440, https://doi.org/10.1038/s41467-026-70498-w
References:
Tiedemann, Ralf; Müller, Juliane (2022): The Expedition PS128 of the Research Vessel POLARSTERN to the Weddell Sea, Lazarew Sea, Riiser-Larsen Sea, Cosmonaut Sea and Cooperation Sea in 2022. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 764, 235 pp, https://doi.org/10.57738/BzPM_0764_2022
Project(s):
Funding:
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AWI_PS128_01: Marine Geology
Coverage:
Latitude: -69.411694 * Longitude: -5.587413
Date/Time Start: 2022-01-17T00:54:00 * Date/Time End: 2022-01-17T00:54:00
Minimum DEPTH, sediment/rock: 0.885 m * Maximum DEPTH, sediment/rock: 4.345 m
Event(s):
PS128_2-3 * Latitude: -69.411694 * Longitude: -5.587413 * Date/Time: 2022-01-17T00:54:00 * Elevation: -1868.0 m * O2A Registry URI: https://registry.o2a-data.de/items/3165 * Location: Weddell Sea * Campaign: PS128 (EASI-1) * Basis: Polarstern * Method/Device: Gravity corer (GC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Pinho, Tainã Marcos Lima | Geocode | |
| 2 | AGE | Age | ka BP | Pinho, Tainã Marcos Lima | Geocode | |
| 3 | Neogloboquadrina pachyderma sinistral, δ18O | N. pachyderma s δ18O | ‰ PDB | Pinho, Tainã Marcos Lima | Mass spectrometer, Thermo Fisher Scientific, MAT 253; coupled with Carbonate preparation device, Thermo Fisher Scientific, KIEL IV | vs. VPDB |
| 4 | Neogloboquadrina pachyderma sinistral, δ13C | N. pachyderma s δ13C | ‰ PDB | Pinho, Tainã Marcos Lima | Mass spectrometer, Thermo Fisher Scientific, MAT 253; coupled with Carbonate preparation device, Thermo Fisher Scientific, KIEL IV | vs. VPDB |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
454 data points