Mg/Ca-based subsurface temperature and ice volume-corrected δ18O of seawater based on Neogloboquadrina pachyderma sinistral from the eastern Weddell Sea off Dronning Maud Land over the last 75 ka
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2026
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| _version_ | 1867171903923290112 |
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| author | 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 |
| author_facet | 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 |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Mg/Ca-based subsurface temperature (°C) and ice volume-corrected δ18O of seawater (δ18Osw-ivc; ‰ VSMOW) based on Neogloboquadrina pachyderma sinistral from eastern Weddell Sea sediment core PS128_2. 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 430 cm core depth at ~2 cm spatial resolution. The records cover the last ~74.5 kyrs. The geochemical analyses were performed on a VARIAN 720–ES Axial ICP-OES, a simultaneous, axial-viewing inductively coupled plasma optical emission spectrometer coupled to a VARIAN SP3 sample preparation system at GEOMAR. Mg/Ca ratios (mmol/mol) were converted into subsurface temperature (SubST; °C) . Contaminant phases are added: Sr/Ca, Ba/Ca, Al/Ca, Fe/Ca, Mn/Ca in mmol/mol). |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_992006 |
| institution | PANGAEA |
| language | en |
| publishDate | 2026 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Mg/Ca-based subsurface temperature and ice volume-corrected δ18O of seawater based on Neogloboquadrina pachyderma sinistral from the eastern Weddell Sea off Dronning Maud Land over the last 75 ka 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 AGE; AWI_INSPIRES; Calculated; Calculated from Mg/Ca ratios; DEPTH, sediment/rock; EASI-1; East Antarctica; Eastern Weddell Sea; GC; Glacial Weddell Polynya; Gravity corer; Inductively coupled plasma-optical emission spectrometry (ICP-OES), Varian 720-ES Axial; coupled to a VARIAN SP3 sample preparation system; International Science Program for Integrative Research in Earth Systems; Mg/Ca; Neogloboquadrina pachyderma, Magnesium/Calcium ratio; Neogloboquadrina pachyderma sinistral; Neogloboquadrina pachyderma sinistral, Aluminium/Calcium ratio; Neogloboquadrina pachyderma sinistral, Barium/Calcium ratio; Neogloboquadrina pachyderma sinistral, Iron/Calcium ratio; Neogloboquadrina pachyderma sinistral, Manganese/Calcium ratio; Neogloboquadrina pachyderma sinistral, Strontium/Calcium ratio; Polarstern; PS128; PS128_2-3; Sub-surface temperature; Warm Deep Water; Weddell Sea; δ18O, ice volume free, seawater; δ18Osw-ivc Mg/Ca-based subsurface temperature (°C) and ice volume-corrected δ18O of seawater (δ18Osw-ivc; ‰ VSMOW) based on Neogloboquadrina pachyderma sinistral from eastern Weddell Sea sediment core PS128_2. 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 430 cm core depth at ~2 cm spatial resolution. The records cover the last ~74.5 kyrs. The geochemical analyses were performed on a VARIAN 720–ES Axial ICP-OES, a simultaneous, axial-viewing inductively coupled plasma optical emission spectrometer coupled to a VARIAN SP3 sample preparation system at GEOMAR. Mg/Ca ratios (mmol/mol) were converted into subsurface temperature (SubST; °C) . Contaminant phases are added: Sr/Ca, Ba/Ca, Al/Ca, Fe/Ca, Mn/Ca in mmol/mol). |
| title | Mg/Ca-based subsurface temperature and ice volume-corrected δ18O of seawater based on Neogloboquadrina pachyderma sinistral from the eastern Weddell Sea off Dronning Maud Land over the last 75 ka |
| topic | AGE; AWI_INSPIRES; Calculated; Calculated from Mg/Ca ratios; DEPTH, sediment/rock; EASI-1; East Antarctica; Eastern Weddell Sea; GC; Glacial Weddell Polynya; Gravity corer; Inductively coupled plasma-optical emission spectrometry (ICP-OES), Varian 720-ES Axial; coupled to a VARIAN SP3 sample preparation system; International Science Program for Integrative Research in Earth Systems; Mg/Ca; Neogloboquadrina pachyderma, Magnesium/Calcium ratio; Neogloboquadrina pachyderma sinistral; Neogloboquadrina pachyderma sinistral, Aluminium/Calcium ratio; Neogloboquadrina pachyderma sinistral, Barium/Calcium ratio; Neogloboquadrina pachyderma sinistral, Iron/Calcium ratio; Neogloboquadrina pachyderma sinistral, Manganese/Calcium ratio; Neogloboquadrina pachyderma sinistral, Strontium/Calcium ratio; Polarstern; PS128; PS128_2-3; Sub-surface temperature; Warm Deep Water; Weddell Sea; δ18O, ice volume free, seawater; δ18Osw-ivc |
| url | https://doi.org/10.1594/PANGAEA.992006 |