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  • 1
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    Winter sea ice concentrations derived from diatom transfer functions on sediment core PS69/274-1 from the western Amundsen Sea, Antarctic (2019)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Description: Via a transfer function, we reconstructed winter sea ice concentrations derived from diatom assemblages on sediment core PS69/274-1 from the western Amundsen Sea, Antarctica. Those data were compared to sea ice reconstructions based on biomarker data.
    Keywords: Antarctica; ANT-XXIII/4; AWI_Paleo; DEPTH, sediment/rock; GC; Gravity corer; Modern analog technique (MAT); palaeoclimatology; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS69; PS69/274-1; Sea ice; Sea ice concentration, winter
    Type: Dataset
    Format: text/tab-separated-values, 34 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Modelled sea-ice patterns and sea surface temperatures for the Antarctic continental margin (2021)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Amundsen Sea; ANT-XXIII/4; ANT-XXXI/3; ANT-XXXII/3; ANT-XXXIII/2; AWI_Paleo; BC; Biomarker; Box corer; Bransfield Strait; Drake Passage; Elevation of event; Event label; GBG; GC; Giant box corer; Giant box grab; GKG; Gravity corer; HBIs; IPSO25; Latitude of event; Longitude of event; modelled; model simulation; MUC; MultiCorer; Multicorer with television; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS104; PS104_12-4; PS104_14-2; PS104_17-2; PS104_22-3; PS104_43-3; PS111; PS111_114-3; PS111_131-2; PS111_13-2; PS111_139-2; PS111_15-1; PS111_16-3; PS111_27-1; PS111_29-3; PS111_40-2; PS111_42-1; PS111_47-2; PS111_53-3; PS111_60-3; PS111_70-2; PS111_80-3; PS111_98-3; PS118; PS118_10-3; PS118_12-2; PS118_24-2; PS118_38-5; PS118_48-2; PS118_5-3; PS118_62-3; PS118_75-1; PS118_8-4; PS69; PS69/255-3; PS69/269-1; PS69/272-3; PS69/275-2; PS69/283-5; PS69/284-2; PS69/288-3; PS69/292-3; PS69/297-1; PS69/299-1; PS69/302-3; PS97; 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; PS97/056-1; PS97/059-1; PS97/060-1; PS97/061-1; PS97/062-1; PS97/065-2; PS97/067-2; PS97/068-2; PS97/069-1; PS97/072-2; PS97/073-2; PS97/074-1; PS97/077-1; PS97/079-1; PS97/080-2; PS97/083-1; PS97/084-2; Scotia Sea; Sea ice; Sea ice concentration, spring; Sea surface temperature, annual mean; Sub-surface ocean temperature; TVMUC; Weddell Sea
    Type: Dataset
    Format: text/tab-separated-values, 402 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    Satellite derived sea-ice distributions from the West Antarctic continental shelves (2021)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Amundsen Sea; ANT-XXIII/4; ANT-XXXI/3; ANT-XXXII/3; ANT-XXXIII/2; AWI_Paleo; BC; Biomarker; Box corer; Bransfield Strait; Drake Passage; Elevation of event; Event label; GBG; GC; Giant box corer; Giant box grab; GKG; Gravity corer; HBIs; IPSO25; Latitude of event; Longitude of event; model simulation; MUC; MultiCorer; Multicorer with television; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS104; PS104_12-4; PS104_14-2; PS104_17-2; PS104_22-3; PS104_43-3; PS111; PS111_114-3; PS111_131-2; PS111_13-2; PS111_139-2; PS111_15-1; PS111_16-3; PS111_27-1; PS111_29-3; PS111_40-2; PS111_42-1; PS111_47-2; PS111_53-3; PS111_60-3; PS111_70-2; PS111_80-3; PS111_98-3; PS118; PS118_10-3; PS118_12-2; PS118_24-2; PS118_38-5; PS118_48-2; PS118_5-3; PS118_62-3; PS118_75-1; PS118_8-4; PS69; PS69/255-3; PS69/269-1; PS69/272-3; PS69/275-2; PS69/283-5; PS69/284-2; PS69/288-3; PS69/292-3; PS69/297-1; PS69/299-1; PS69/302-3; PS97; 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; PS97/056-1; PS97/059-1; PS97/060-1; PS97/061-1; PS97/062-1; PS97/065-2; PS97/067-2; PS97/068-2; PS97/069-1; PS97/072-2; PS97/073-2; PS97/074-1; PS97/077-1; PS97/079-1; PS97/080-2; PS97/083-1; PS97/084-2; Scotia Sea; Sea ice; Sea ice concentration, spring; Sea ice concentration, spring, standard deviation; Sea ice concentration, summer; Sea ice concentration, summer, standard deviation; Sea ice concentration, winter; Sea ice concentration, winter, standard deviation; TVMUC; Weddell Sea
    Type: Dataset
    Format: text/tab-separated-values, 402 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 4
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    Biomarker concentrations in marine surface sediment samples from West Antarctic continental shelves (2021)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: (9E)-2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyliden)pentadeca-9-ene, per unit mass total organic carbon; (9Z)-2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyliden)pentadeca-9-ene, per unit mass total organic carbon; 2,10,14-Trimethyl-6-enyl-7-(3-methylpent-1-enyl)pentadecene, per unit mass total organic carbon; 24-Methylcholesta-5,22E-dien-3beta-ol, per unit mass total organic carbon; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol, per unit mass total organic carbon; Acyclic glycerol dialkyl glycerol tetraether (peak area); Amundsen Sea; ANT-XXIII/4; ANT-XXXI/3; ANT-XXXII/3; ANT-XXXIII/2; AWI_Paleo; BC; Biomarker; Box corer; Branched and isoprenoid tetraether index; Bransfield Strait; Carbon, organic, total; Crenarchaeol (peak area); Crenarchaeol regio-isomer (peak area); DEPTH, sediment/rock; Dicyclic glycerol dialkyl glycerol tetraether (peak area); Drake Passage; Elevation of event; Event label; GBG; GC; Giant box corer; Giant box grab; GKG; Gravity corer; HBIs; Hydroxylated acyclic glycerol dialkyl glycerol tetraether (peak area); Hydroxylated dicyclic glycerol dialkyl glycerol tetraether (peak area); Hydroxylated monocyclic glycerol dialkyl glycerol tetraether (peak area); IPSO25; Latitude of event; Longitude of event; model simulation; Monocyclic glycerol dialkyl glycerol tetraether (peak area); MUC; MultiCorer; Multicorer with television; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Phytoplankton biomarker Brassicasterol IPSO25 index; Phytoplankton biomarker Dinosterol IPSO25 index; Phytoplankton biomarker HBI E-Triene IPSO25 index; Phytoplankton biomarker HBI Z-Triene IPSO25 index; Polarstern; PS104; PS104_12-4; PS104_14-2; PS104_17-2; PS104_22-3; PS104_43-3; PS111; PS111_114-3; PS111_131-2; PS111_13-2; PS111_139-2; PS111_15-1; PS111_16-3; PS111_27-1; PS111_29-3; PS111_40-2; PS111_42-1; PS111_47-2; PS111_53-3; PS111_60-3; PS111_70-2; PS111_80-3; PS111_98-3; PS118; PS118_10-3; PS118_12-2; PS118_24-2; PS118_38-5; PS118_48-2; PS118_5-3; PS118_62-3; PS118_75-1; PS118_8-4; PS69; PS69/251-1; PS69/255-3; PS69/269-1; PS69/272-3; PS69/275-2; PS69/283-5; PS69/284-2; PS69/288-3; PS69/292-3; PS69/297-1; PS69/299-1; PS69/302-3; PS97; 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; PS97/056-1; PS97/059-1; PS97/060-1; PS97/061-1; PS97/062-1; PS97/065-2; PS97/067-2; PS97/068-2; PS97/069-1; PS97/072-2; PS97/073-2; PS97/074-1; PS97/077-1; PS97/079-1; PS97/080-2; PS97/083-1; PS97/084-2; Ring index of hydroxylated glycerol dialkyl glycerol tetraethers; Scotia Sea; Sea ice; Sea surface temperature; SOT, from TEX86L; SST, from Ring-Index RI-OH; Tetraether index of 86 carbon atoms, low-temperature region; Tricyclic glycerol dialkyl glycerol tetraether (peak area); TVMUC; Weddell Sea
    Type: Dataset
    Format: text/tab-separated-values, 1561 data points
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    DATA PANGAEA
  • 5
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    Sedimentology, geochemistry and winter se ice concentration reconstruction for sediment core PS69/274-1 from the western Amundsen Sea, Antarctica (2019)
    PANGAEA
    In:  Supplement to: Lamping, Nele; Müller, Juliane; Esper, Oliver; Hillenbrand, Claus-Dieter; Smith, James A; Kuhn, Gerhard (2020): Highly branched isoprenoids reveal onset of deglaciation followed by dynamic sea-ice conditions in the western Amundsen Sea, Antarctica. Quaternary Science Reviews, 228, 106103, https://doi.org/10.1016/j.quascirev.2019.106103
    Details
    Publication Date: 2023-06-27
    Description: We analysed: 1. TOC and CNS contents on sediment core PS69/274-1 and calculated the C/N-ratio and carbonate content of the individual sample depths. 2. a specific biomarker lipid called IPSO25 in sediment core PS69/274-1 from the western Amundsen Sea continental shelf, Antarctica, alongside a phytoplankton biomarker (dinosterol) for reconstructing palaeo-sea ice coverage. We further applied the PIPSO25 approach for semi-quantitative sea ice reconstructions. We analysed a specific biomarker lipid called IPSO25 in sediment core PS69/274-1 from the western Amundsen Sea continental shelf, Antarctica, alongside a phytoplankton biomarker (dinosterol) for reconstructing palaeo sea-ice coverage. We further applied the PIPSO25 approach for semi-quantitative sea-ice reconstructions.
    Keywords: Antarctica; ANT-XXIII/4; AWI_Paleo; GC; Gravity corer; HBIs; IPSO25; palaeoclimatology; paleoclimatology; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS69; PS69/274-1; Sea ice
    Type: Dataset
    Format: application/zip, 3 datasets
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    DATA PANGAEA
  • 6
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    Sedimentological data of sediment core PS69/274-1 from the western Amundsen Sea, Antarctica (2019)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Description: We analysed TOC and CNS contents on sediment core PS69/274-1 and calculated the C/N-ratio and carbonate content of the individual sample depths. Those data were compared to biomarker data of the same sediment core, in order to give a more accurate environmental reconstruction for the western Amundsen Sea since the last ice age.
    Keywords: Antarctica; ANT-XXIII/4; AWI_Paleo; Calcium carbonate; Carbon, organic, total; Carbon/Nitrogen ratio; DEPTH, sediment/rock; GC; Gravity corer; paleoclimatology; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS69; PS69/274-1; Sea ice
    Type: Dataset
    Format: text/tab-separated-values, 343 data points
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    DATA PANGAEA
  • 7
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    Biomarker concentrations in marine surface sediment samples from West Antarctic continental shelves alongside satellite observations and model simulations (2021)
    PANGAEA
    Details
    Publication Date: 2023-11-29
    Description: We analyzed biomarker concentrations on 41 surface sediment samples from the continental shelves of the Antarctic Peninsula, the Amundsen and Weddell Seas, specifically: highly branched isoprenoids, phytosterols and archaeal isoprenoid glycerol dialkyl glycerol tetraethers (GDGTs) for reconstructing recent sea-ice distribution patterns and water temperatures, respectively. Alongside our biomarker-based results, sea-ice distributions obtained from satellite observations and estimated sea-ice patterns and sea surface temperatures deduced from model simulations are presented.
    Keywords: AWI_Paleo; Biomarker; HBIs; IPSO25; model simulation; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Sea ice
    Type: Dataset
    Format: application/zip, 3 datasets
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    DATA PANGAEA
  • 8
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    Highly branched isoprenoids and sterols in sediment core PS69/274-1 from western Amundsen Sea, Antarctica (2019)
    PANGAEA
    Details
    Publication Date: 2024-02-16
    Keywords: 2,10,14-Trimethyl-6-enyl-7-(3-methylpent-1-enyl)pentadecene, per unit mass total organic carbon; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol, per unit mass total organic carbon; Antarctica; ANT-XXIII/4; AWI_Paleo; DEPTH, sediment/rock; GC; Gravity corer; HBIs; IPSO25; palaeoclimatology; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Phytoplankton biomarker Dinosterol IPSO25 index; Polarstern; PS69; PS69/274-1; Sea ice
    Type: Dataset
    Format: text/tab-separated-values, 336 data points
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    DATA PANGAEA
  • 9
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    Highly branched isoprenoids and sterols in sediment core PS69/274-1 from western Amundsen Sea, Antarctica - Corrigendum (2020)
    PANGAEA
    Details
    Publication Date: 2024-02-16
    Keywords: 2,10,14-Trimethyl-6-enyl-7-(3-methylpent-1-enyl)pentadecene, per unit mass total organic carbon; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol, per unit mass total organic carbon; Antarctica; ANT-XXIII/4; AWI_Paleo; DEPTH, sediment/rock; GC; Gravity corer; HBIs; IPSO25; palaeoclimatology; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Phytoplankton biomarker Dinosterol IPSO25 index; Polarstern; PS69; PS69/274-1; Sea ice
    Type: Dataset
    Format: text/tab-separated-values, 335 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 10
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    Ice-shelf and sea-ice dynamics: the biomarker perspective (2019)
    In:  EPIC3International Symposium on Antarctic Earth Sciences (ISAES), Incheon, South Korea, 2019-07-22-2019-07-26
    Details
    Publication Date: 2019-09-23
    Description: Evaluating the impact of sea ice and ocean temperature changes on ice-shelf stability is a crucial aspect for the identification of ocean-cryosphere interactions and the response of Antarctic ice-sheets to climate variability. The role of sea ice in ice-sheet proximal environments, however, remains poorly constrained as the application of diatom assemblages in heavily (summer) sea ice covered coastal areas is often hampered by silica dissolution. Highly branched isoprenoids (HBIs) provide a promising tool to overcome this gap. Biomarker analyses focusing on the di-unsaturated HBI termed IPSO25 (Ice Proxy for the Southern Ocean with 25 carbon atoms; Belt et al., 2016), related tri-unsaturated HBIs and phytosterols as well as the application of GDGTs as paleothermometer provide a valuable toolbox for assessing paleoenvironmental conditions in ice-proximal areas. Here, we present preliminary biomarker data obtained from sediment cores collected in the Bransfield Strait, the Amundsen Sea and the Weddell Sea. The data reveal distinct fluctuations in sea ice coverage and primary productivity during the last deglacial(s), which, through consideration of sedimentological data alongside these biomarker records, can be linked to phases of retreating and advancing glacial ice.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
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