Biomarker and bulk sediment parameter of three sediment cores Chukchi and East Siberian Seas (Arctic Ocean)
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
2017
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| author | Stein, Ruediger Fahl, Kirsten Schade, Inka Manerung, Adelina Wassmuth, Saskia Niessen, Frank Nam, Seung-Il |
| author_facet | Stein, Ruediger Fahl, Kirsten Schade, Inka Manerung, Adelina Wassmuth, Saskia Niessen, Frank Nam, Seung-Il |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_868795 |
| institution | PANGAEA |
| language | en |
| publishDate | 2017 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Biomarker and bulk sediment parameter of three sediment cores Chukchi and East Siberian Seas (Arctic Ocean) Stein, Ruediger Fahl, Kirsten Schade, Inka Manerung, Adelina Wassmuth, Saskia Niessen, Frank Nam, Seung-Il AWI_Paleo; Paleoenvironmental Reconstructions from Marine Sediments @ AWI 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. |
| title | Biomarker and bulk sediment parameter of three sediment cores Chukchi and East Siberian Seas (Arctic Ocean) |
| topic | AWI_Paleo; Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
| url | https://doi.org/10.1594/PANGAEA.868795 |