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  • ANT-XXVI/2; AWI_Paleo; Gravity corer (Kiel type); Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS75/072-4; PS75 BIPOMAC; SL; South Pacific Ocean  (2)
  • (24S)-Ethylcholest-5,22E-dien-3beta-ol, per unit mass total organic carbon; (24S)-Ethylcholest-5,22E-dien-3beta-ol per unit sediment mass; 10,13-dimethyl-17-[2-(2-ethylcyclopropyl)ethan-2-yl]-cyclopenta-phenanthren-5-ene, per unit mass total organic carbon; 10,13-dimethyl-17-[2-(2-ethylcyclopropyl)ethan-2-yl]-cyclopenta-phenanthren-5-ene per unit sediment mass; 24-ethylcholest-5-en-3beta-ol, per unit mass total organic carbon; 24-Ethylcholest-5-en-3beta-ol per unit sediment mass; 24-Methylcholest-5-en-3beta-ol, per unit mass total organic carbon; 24-Methylcholest-5-en-3beta-ol per unit sediment mass; 24-Methylcholesta-5,22E-dien-3beta-ol, per unit mass total organic carbon; 24-Methylcholesta-5,22E-dien-3beta-ol per unit sediment mass; 24-Methylcholesta-5,24(28)-dien-3beta-ol, per unit mass total organic carbon; 24-Methylcholesta-5,24(28)-dien-3beta-ol per unit sediment mass; 24-Nor-5a-cholest-22-en-3beta-ol, per unit mass total organic carbon; 24-Nor-5a-cholest-22-en-3beta-ol per unit sediment mass; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol, per unit mass total organic carbon; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol per unit sediment mass; 5alpha-Cholestan-3beta-ol, per unit mass total organic carbon; 5alpha-Cholestan-3beta-ol per unit sediment mass; ANT-XXXI/3; Bransfield Strait; cholest-4-en-3-one, per unit mass total organic carbon; cholest-4-en-3-one per unit sediment mass; cholesta-5,24-dien-3beta-ol, per unit mass total organic carbon; cholesta-5,24-dien-3beta-ol per unit sediment mass; Cholesta-5-en-3beta-ol, per unit mass total organic carbon; Cholesta-5-en-3beta-ol per unit sediment mass; DEPTH, sediment/rock; diatoms; Drake Passage; Elevation of event; Event label; GBG; GC; Giant box corer; Giant box grab; GKG; Gravity corer; Latitude of event; Longitude of event; MUC; MultiCorer; organic carbon; Photosynthetic pigments; Polarstern; PS97; PS97/015-2; PS97/020-1; PS97/021-1; PS97/022-1; PS97/024-2; PS97/027-1; PS97/042-1; PS97/044-1; PS97/045-1; PS97/046-6; PS97/048-1; PS97/049-2; PS97/052-3; PS97/053-1; PS97/054-2; PS97/055-2; PS97/056-1; PS97/059-1; PS97/060-1; PS97/061-1; PS97/062-1; PS97/065-2; PS97/067-2; PS97/068-2; PS97/069-1; PS97/071-2; PS97/072-2; PS97/074-1; PS97/077-1; PS97/079-1; PS97/080-2; PS97/083-1; PS97/084-2; PS97/085-2; PS97/086-2; PS97/089-2; PS97/093-3; PS97/094-1; PS97/095-1; PS97/096-1; PS97/114-1; PS97/122-2; PS97/128-1; PS97/129-2; PS97/131-1; PS97/134-1; Scotia Sea; South Pacific Ocean; sterols; stigmasta-5,24(28)-dien-3-ol, per unit mass total organic carbon; stigmasta-5,24(28)-dien-3-ol per unit sediment mass; surface sediments
Publikationsart
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  • 1
    facet.materialart.
    Unbekannt
    Diatom-bound N isotope records over the last two glacial cycles in sediment core PS75/072-4 (2015)
    PANGAEA
    In:  Supplement to: Studer, Anja S; Sigman, Daniel M; Martínez‐García, Alfredo; Benz, Verena; Winckler, Gisela; Kuhn, Gerhard; Esper, Oliver; Lamy, Frank; Jaccard, Samuel L; Wacker, Lukas; Oleynik, Sergey; Gersonde, Rainer; Haug, Gerald H (2015): Antarctic Zone nutrient conditions during the last two glacial cycles. Paleoceanography, 30(7), 845-862, https://doi.org/10.1002/2014PA002745
    Details
    Publikationsdatum: 2024-06-26
    Beschreibung: In a sediment core from the Pacific sector of the Antarctic Zone (AZ) of the Southern Ocean, we report diatom-bound N isotope (d15Ndb) records for total recoverable diatoms and two distinct diatom assemblages (pennate and centric rich). These data indicate tight coupling between the degree of nitrate consumption and Antarctic climate across the last two glacial cycles, with d15Ndb (and thus the degree of nitrate consumption) increasing at each major Antarctic cooling event. Coupled with evidence from opal- and barium-based proxies for reduced export production during ice ages, the d15Ndb increases point to ice age reductions in the supply of deep ocean-sourced nitrate to the AZ surface. The two diatom assemblages and species abundance data indicate that the d15Ndb changes are not the result of changing species composition. The pennate and centric assemblage d15Ndb records indicate similar changes but with a significant decline in their difference during peak ice ages. A tentative seasonality-based interpretation of the centric-to-pennate d15Ndb difference suggests that late summer surface waters became nitrate free during the peak glacials.
    Schlagwort(e): ANT-XXVI/2; AWI_Paleo; Gravity corer (Kiel type); Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS75/072-4; PS75 BIPOMAC; SL; South Pacific Ocean
    Materialart: Dataset
    Format: application/zip, 5 datasets
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    DATA PANGAEA
  • 2
    facet.materialart.
    Unbekannt
    Documentation of sediment core PS75/072-4 (2010)
    PANGAEA
    In:  Alfred Wegener Institute - Polarstern core repository
    Details
    Publikationsdatum: 2024-06-26
    Schlagwort(e): ANT-XXVI/2; AWI_Paleo; Gravity corer (Kiel type); Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS75/072-4; PS75 BIPOMAC; SL; South Pacific Ocean
    Materialart: Dataset
    Format: unknown
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    DATA PANGAEA
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