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  • 1
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    Biomarker and bulk sediment parameter of three sediment cores Chukchi and East Siberian Seas (Arctic Ocean) (2017)
    PANGAEA
    In:  Supplement to: Stein, Ruediger; Fahl, Kirsten; Schade, Inka; Manerung, Adelina; Wassmuth, Saskia; Niessen, Frank; Nam, Seung-Il (2017): Holocene variability in sea ice cover, primary production, and Pacific-Water inflow and climate change in the Chukchi and East Siberian Seas (Arctic Ocean). Journal of Quaternary Science, https://doi.org/10.1002/jqs.2929
    Details
    Publication Date: 2024-04-27
    Description: In this study, we present new detailed biomarker-based sea ice records from two sediment cores recovered in the Chukchi Sea and the East Siberian Sea. These new biomarker data may provide new insights on processes controlling recent and past sea ice changes. The biomarker proxy records show (i) minimum sea ice extent during the Early Holocene, (ii) a prominent Mid-Holocene short-term high-amplitude variability in sea ice, primary production and Pacific-Water inflow, and (iii) significantly increased sea ice extent during the last ca. 4.5k cal a BP. This Late Holocene trend in sea ice change in the Chukchi and East Siberian Seas seems to be contemporaneous with similar changes in sea ice extent recorded from other Arctic marginal seas. The main factors controlling the millennial variability in sea ice (and surface-water productivity) are probably changes in surface water and heat flow from the Pacific into the Arctic Ocean as well as the long-term decrease in summer insolation. The short-term centennial variability observed in the high-resolution Middle Holocene record is probably related to solar forcing. Our new data on Holocene sea ice variability may contribute to synoptic reconstructions of regional to global Holocene climate change based on terrestrial and marine archives.
    Keywords: AWI_Paleo; Paleoenvironmental Reconstructions from Marine Sediments @ AWI
    Type: Dataset
    Format: application/zip, 6 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    (Table 3) Biomarker accumulation rates of sediment core ARA2B-1A (2017)
    PANGAEA
    Details
    Publication Date: 2024-04-27
    Keywords: Accumulation rate, 2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyl)pentadecane; Accumulation rate, 24-Ethylcholest-5-en-3beta-ol; Accumulation rate, 24-Methylcholest-5-en-3beta-ol; Accumulation rate, 24-Methylcholesta-5,22E-dien-3beta-ol; Accumulation rate, 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol; Accumulation rate, mass; AGE; Age, 14C AMS; ARA2B; ARA2B-1A; Araon; Arctic Ocean; AWI_Paleo; Calculated; DEPTH, sediment/rock; GC; Gravity corer; Paleoenvironmental Reconstructions from Marine Sediments @ AWI
    Type: Dataset
    Format: text/tab-separated-values, 660 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    (Table 5) Biomarker proxies on sediment core PS72/350-2 (2017)
    PANGAEA
    Details
    Publication Date: 2024-04-27
    Keywords: 2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyl)pentadecane, per unit mass total organic carbon; 2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyl)pentadecane 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; ARK-XXIII/3; AWI_Paleo; DEPTH, sediment/rock; East Siberian Sea; GC; Gravity corer; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Phytoplankton biomarker Brassicasterol IP25 index; Polarstern; PS72; PS72/350-2; Ratio
    Type: Dataset
    Format: text/tab-separated-values, 850 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 4
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    (Table 2) Biomarker proxies on sediment core ARA2B-1A (2017)
    PANGAEA
    Details
    Publication Date: 2024-04-27
    Keywords: 2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyl)pentadecane, per unit mass total organic carbon; 2,6,10,14-Tetramethyl-7-(3-methylpent-4-enyl)pentadecane 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; 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; AGE; Age, 14C AMS; ARA2B; ARA2B-1A; Araon; Arctic Ocean; AWI_Paleo; Calculated; Carbon, organic, total; DEPTH, sediment/rock; Element analyser CHN, LECO; Gas chromatography - Mass spectrometry (GC-MS); GC; Gravity corer; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Phytoplankton biomarker Brassicasterol IP25 index; Phytoplankton biomarker Dinosterol IP25 index
    Type: Dataset
    Format: text/tab-separated-values, 1430 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 5
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    (Table 4) Organic geochemistry of sediment core PS72/350-2 (2017)
    PANGAEA
    Details
    Publication Date: 2024-04-27
    Keywords: ARK-XXIII/3; AWI_Paleo; Calcium carbonate; Carbon, organic, total; Carbon dioxide yield, S3 per unit sediment mass; DEPTH, sediment/rock; East Siberian Sea; Element analyser CHN, LECO; GC; Gravity corer; Hydrocarbon yield, S1 per unit sediment mass; Hydrocarbon yield, S2 per unit sediment mass; Hydrogen index, mass HC, per unit mass total organic carbon; Oxygen index, mass CO2, per unit mass total organic carbon; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS72; PS72/350-2; Pyrolysis temperature maximum; Rock eval pyrolysis (Behar et al., 2001)
    Type: Dataset
    Format: text/tab-separated-values, 784 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 6
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    (Table 6) Mineralogy of sediment core ARA2B-1B (2017)
    PANGAEA
    Details
    Publication Date: 2024-04-27
    Keywords: AGE; Age, 14C AMS; Amphibole; ARA2B; ARA2B-1B; Aragonite; Araon; Arctic Ocean; AWI_Paleo; Calcite; Chlorite; Clay minerals; DEPTH, sediment/rock; Dolomite; Elements, total; GC; Goethite; Gravity corer; Halite; Illite; Kalifeldspar; Kaolinite; Maghemite; Muscovite; Non-clay minerals; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Plagioclase; Pyrite, FeS2; Quartz; Smectite; X-ray diffraction (XRD)
    Type: Dataset
    Format: text/tab-separated-values, 1710 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 7
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    (Table 1) Bulk sediment parameter of sediment core ARA2B-1A (2017)
    PANGAEA
    Details
    Publication Date: 2024-04-27
    Keywords: Accumulation rate, calcium carbonate; Accumulation rate, mass; Accumulation rate, opal; Accumulation rate, terrigenous; Accumulation rate, total organic carbon; AGE; Age, 14C AMS; ARA2B; ARA2B-1A; Araon; Arctic Ocean; AWI_Paleo; Calcium carbonate; Calculated; Carbon, inorganic, total; Carbon, organic, total; Density, wet bulk; DEPTH, sediment/rock; Element analyser CHN, LECO; GC; Gravity corer; Opal particles; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Porosity; Sedimentation rate; Sequential leaching technique
    Type: Dataset
    Format: text/tab-separated-values, 1298 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 8
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    Deglacial-Holocene variability in sea ice, primary productivity, and sea-level change in the Pacific-Arctic gateway area (2013)
    In:  EPIC3AGU Fall Meeting 2013, San Francisco, California, USA, 2013-12-09-2013-12-13
    Details
    Publication Date: 2019-07-16
    Description: Sea-ice is an essential component of the global climate system and, especially, the Polar Oceans. An alarming decrease in term of sea-ice concentration, thickness and duration, has been observed in the Arctic Ocean and its marginal seas over the last 30 years. Thus, understanding the processes controlling modern sea-ice variability and reconstructing paleo-sea-ice extent and variability in polar regions have become of great interest for the international scientific community during the last years. Here, we present new proxy records from the Chukchi-Bering Sea area - including organic geochemical bulk parameters, specific biomarkers (IP25, sterols, alkenones), biogenic opal, etc. - that give new insight into the sea-ice variability and related changes in sea-surface temperatures, primary productivity, sea-level change, and terrigenous input during deglacial-Holocene times. Such high-resolution proxy records representing natural climate variability in the past on time scales going back in time beyond the period of direct measurements and observations, might be used to test the reliability of climate models for forecasting future climate change.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
    Location Call Number Limitation Availability
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    PAPER (OA)
  • 9
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    Holocene variability in sea ice cover, primary production, and Pacific-Water inflow and climate change in the Chukchi and East Siberian Seas (Arctic Ocean) (2017)
    JOHN WILEY & SONS LTD
    In:  EPIC3Journal of Quaternary Science, JOHN WILEY & SONS LTD, 32(3), pp. 362-379, ISSN: 0267-8179
    Details
    Publication Date: 2017-05-26
    Description: In this study, we present new detailed biomarker-based sea ice records from two sediment cores recovered in the Chukchi Sea and the East Siberian Sea. These new biomarker data may provide new insights on processes controlling recent and past sea ice changes. The biomarker proxy records show (i) minimum sea ice extent during the Early Holocene, (ii) a prominent Mid-Holocene short-term high-amplitude variability in sea ice,primary production and Pacific-Water inflow, and (iii) significantly increased sea ice extent during the last ca.4.5k cal a BP. This Late Holocene trend in sea ice change in the Chukchi and East Siberian Seas seems to be contemporaneous with similar changes in sea ice extent recorded from other Arctic marginal seas. The main factors controlling the millennial variability in sea ice (and surface-water productivity) are probably changes in surface water and heat flow from the Pacific into the Arctic Ocean as well as the long-term decrease in summer insolation. The short-term centennial variability observed in the high-resolution Middle Holocene record is probably related to solar forcing. Our new data on Holocene sea ice variability may contribute to synoptic reconstructions of regional to global Holocene climate change based on terrestrial and marine archives.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Location Call Number Limitation Availability
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    PAPER (OA)
  • 10
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    Decadal to millennial-scale variability in sea ice, primary productivity, and Pacific-Water inflow in the Chukchi/East Siberian Sea area (Arctic Ocean). (2014)
    In:  EPIC3EGU General Assembly 2014, Vienna, Austria, 2014-04-27-2014-05-02
    Details
    Publication Date: 2015-04-23
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
    Location Call Number Limitation Availability
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    PAPER (OA)
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