Sediment investigations in the Kara Sea, supplement to: Stein, Ruediger; Fahl, Kirsten; Dittmers, Klaus Hauke; Niessen, Frank; Stepanets, Oleg V (2003): Holocene siliciclastic and organic carbon fluxes in the Ob and Yenisei estuaries and the adjacent inner Kara Sea: Quantification, variability, and paleoenvironmental implications. In: Stein, R; Fahl, K; Fütterer, D K; Galimov, E M & Stepanets, O V (eds.), Siberian River Run-off in the Kara Sea: Characterisation, Quantification, Variability, and Environmental Significance, 488 pp. Proceedings in Marine Sciences, Elsevier, Amsterdam, 6, 401-432
AMS-14C dated sediment cores from the Ob and Yenisei estuaries and the adjacent inner Kara Sea were investigated to determine the siliclastic and organic carbon fluxes and their relationship to paleoenvironmental changes. The variability of sediment fluxes during Holocene times is related to the pos...
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ftdatacite:10.1594/pangaea.804871 2023-05-15T15:19:01+02:00 Sediment investigations in the Kara Sea, supplement to: Stein, Ruediger; Fahl, Kirsten; Dittmers, Klaus Hauke; Niessen, Frank; Stepanets, Oleg V (2003): Holocene siliciclastic and organic carbon fluxes in the Ob and Yenisei estuaries and the adjacent inner Kara Sea: Quantification, variability, and paleoenvironmental implications. In: Stein, R; Fahl, K; Fütterer, D K; Galimov, E M & Stepanets, O V (eds.), Siberian River Run-off in the Kara Sea: Characterisation, Quantification, Variability, and Environmental Significance, 488 pp. Proceedings in Marine Sciences, Elsevier, Amsterdam, 6, 401-432 Stein, Ruediger Fahl, Kirsten Dittmers, Klaus Hauke Niessen, Frank Stepanets, Oleg V 2013 application/zip https://dx.doi.org/10.1594/pangaea.804871 https://doi.pangaea.de/10.1594/PANGAEA.804871 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.2312/bzp_0360_2000 https://dx.doi.org/10.2312/bzpm_0393_2001 https://dx.doi.org/10.2312/bzpm_0419_2002 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Siberian River Run-Off SIRRO article Supplementary Collection of Datasets Collection 2013 ftdatacite https://doi.org/10.1594/pangaea.804871 https://doi.org/10.2312/bzp_0360_2000 https://doi.org/10.2312/bzpm_0393_2001 https://doi.org/10.2312/bzpm_0419_2002 2022-02-09T11:51:20Z AMS-14C dated sediment cores from the Ob and Yenisei estuaries and the adjacent inner Kara Sea were investigated to determine the siliclastic and organic carbon fluxes and their relationship to paleoenvironmental changes. The variability of sediment fluxes during Holocene times is related to the post-glacial sea-level rise and changes in river discharge and coastal erosion input. Whereas during the late/middle Holocene most of the terrigenous sediments were deposited in the estuaries and the areas directly off the estuaries, huge amounts of sediments accumulated on the Kara Sea shelf farther north during the early Holocene before about 9 Cal. kyrs. BP. The maximum accumulation at that time is related to the lowered sea level, increased coastal erosion, and increased river discharge due to the final stage of mountain deglaciation of the Putoran Massif. Increased supply of Yenisei-derived material indicated by peak magnetic susceptibility values probably occurred in climate-related pulses culminating near 11, 10, and 9 Cal. kyrs. BP. As sea level rose, the main Holocene depocenter migrated southward. Based on hydrogen index values and n-alkanes, the organic matter is predominantly of terrigenous origin. Maximum accumulation rates of 1.5 to more than 6 g/cm**2/y occurred in the early Holocene sediments, suggesting more humid climatic conditions with an increased vegetation cover in the source area at that time. In general, high organic carbon accumulation rates characterize the estuaries and the inner Kara Sea as important sink for terrigenous organic carbon. A high-resolution record of Holocene variability of magnetic susceptibility (MS) in an AMS14C-dated sediment core from the northern Yenisei estuary may indicate natural variability of Arctic climate change and river discharge on a centennial to millenial time scale. Short-term maxima in MS probably related to warmer climate, enhanced precipitation, intensified weathering/erosion and increased river discharge, display a frequency of about 300 to 700 years. Article in Journal/Newspaper Arctic Climate change Kara Sea Magnetic susceptibility DataCite Metadata Store (German National Library of Science and Technology) Arctic Kara Sea Klaus ENVELOPE(24.117,24.117,65.717,65.717) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Siberian River Run-Off SIRRO |
spellingShingle |
Siberian River Run-Off SIRRO Stein, Ruediger Fahl, Kirsten Dittmers, Klaus Hauke Niessen, Frank Stepanets, Oleg V Sediment investigations in the Kara Sea, supplement to: Stein, Ruediger; Fahl, Kirsten; Dittmers, Klaus Hauke; Niessen, Frank; Stepanets, Oleg V (2003): Holocene siliciclastic and organic carbon fluxes in the Ob and Yenisei estuaries and the adjacent inner Kara Sea: Quantification, variability, and paleoenvironmental implications. In: Stein, R; Fahl, K; Fütterer, D K; Galimov, E M & Stepanets, O V (eds.), Siberian River Run-off in the Kara Sea: Characterisation, Quantification, Variability, and Environmental Significance, 488 pp. Proceedings in Marine Sciences, Elsevier, Amsterdam, 6, 401-432 |
topic_facet |
Siberian River Run-Off SIRRO |
description |
AMS-14C dated sediment cores from the Ob and Yenisei estuaries and the adjacent inner Kara Sea were investigated to determine the siliclastic and organic carbon fluxes and their relationship to paleoenvironmental changes. The variability of sediment fluxes during Holocene times is related to the post-glacial sea-level rise and changes in river discharge and coastal erosion input. Whereas during the late/middle Holocene most of the terrigenous sediments were deposited in the estuaries and the areas directly off the estuaries, huge amounts of sediments accumulated on the Kara Sea shelf farther north during the early Holocene before about 9 Cal. kyrs. BP. The maximum accumulation at that time is related to the lowered sea level, increased coastal erosion, and increased river discharge due to the final stage of mountain deglaciation of the Putoran Massif. Increased supply of Yenisei-derived material indicated by peak magnetic susceptibility values probably occurred in climate-related pulses culminating near 11, 10, and 9 Cal. kyrs. BP. As sea level rose, the main Holocene depocenter migrated southward. Based on hydrogen index values and n-alkanes, the organic matter is predominantly of terrigenous origin. Maximum accumulation rates of 1.5 to more than 6 g/cm**2/y occurred in the early Holocene sediments, suggesting more humid climatic conditions with an increased vegetation cover in the source area at that time. In general, high organic carbon accumulation rates characterize the estuaries and the inner Kara Sea as important sink for terrigenous organic carbon. A high-resolution record of Holocene variability of magnetic susceptibility (MS) in an AMS14C-dated sediment core from the northern Yenisei estuary may indicate natural variability of Arctic climate change and river discharge on a centennial to millenial time scale. Short-term maxima in MS probably related to warmer climate, enhanced precipitation, intensified weathering/erosion and increased river discharge, display a frequency of about 300 to 700 years. |
format |
Article in Journal/Newspaper |
author |
Stein, Ruediger Fahl, Kirsten Dittmers, Klaus Hauke Niessen, Frank Stepanets, Oleg V |
author_facet |
Stein, Ruediger Fahl, Kirsten Dittmers, Klaus Hauke Niessen, Frank Stepanets, Oleg V |
author_sort |
Stein, Ruediger |
title |
Sediment investigations in the Kara Sea, supplement to: Stein, Ruediger; Fahl, Kirsten; Dittmers, Klaus Hauke; Niessen, Frank; Stepanets, Oleg V (2003): Holocene siliciclastic and organic carbon fluxes in the Ob and Yenisei estuaries and the adjacent inner Kara Sea: Quantification, variability, and paleoenvironmental implications. In: Stein, R; Fahl, K; Fütterer, D K; Galimov, E M & Stepanets, O V (eds.), Siberian River Run-off in the Kara Sea: Characterisation, Quantification, Variability, and Environmental Significance, 488 pp. Proceedings in Marine Sciences, Elsevier, Amsterdam, 6, 401-432 |
title_short |
Sediment investigations in the Kara Sea, supplement to: Stein, Ruediger; Fahl, Kirsten; Dittmers, Klaus Hauke; Niessen, Frank; Stepanets, Oleg V (2003): Holocene siliciclastic and organic carbon fluxes in the Ob and Yenisei estuaries and the adjacent inner Kara Sea: Quantification, variability, and paleoenvironmental implications. In: Stein, R; Fahl, K; Fütterer, D K; Galimov, E M & Stepanets, O V (eds.), Siberian River Run-off in the Kara Sea: Characterisation, Quantification, Variability, and Environmental Significance, 488 pp. Proceedings in Marine Sciences, Elsevier, Amsterdam, 6, 401-432 |
title_full |
Sediment investigations in the Kara Sea, supplement to: Stein, Ruediger; Fahl, Kirsten; Dittmers, Klaus Hauke; Niessen, Frank; Stepanets, Oleg V (2003): Holocene siliciclastic and organic carbon fluxes in the Ob and Yenisei estuaries and the adjacent inner Kara Sea: Quantification, variability, and paleoenvironmental implications. In: Stein, R; Fahl, K; Fütterer, D K; Galimov, E M & Stepanets, O V (eds.), Siberian River Run-off in the Kara Sea: Characterisation, Quantification, Variability, and Environmental Significance, 488 pp. Proceedings in Marine Sciences, Elsevier, Amsterdam, 6, 401-432 |
title_fullStr |
Sediment investigations in the Kara Sea, supplement to: Stein, Ruediger; Fahl, Kirsten; Dittmers, Klaus Hauke; Niessen, Frank; Stepanets, Oleg V (2003): Holocene siliciclastic and organic carbon fluxes in the Ob and Yenisei estuaries and the adjacent inner Kara Sea: Quantification, variability, and paleoenvironmental implications. In: Stein, R; Fahl, K; Fütterer, D K; Galimov, E M & Stepanets, O V (eds.), Siberian River Run-off in the Kara Sea: Characterisation, Quantification, Variability, and Environmental Significance, 488 pp. Proceedings in Marine Sciences, Elsevier, Amsterdam, 6, 401-432 |
title_full_unstemmed |
Sediment investigations in the Kara Sea, supplement to: Stein, Ruediger; Fahl, Kirsten; Dittmers, Klaus Hauke; Niessen, Frank; Stepanets, Oleg V (2003): Holocene siliciclastic and organic carbon fluxes in the Ob and Yenisei estuaries and the adjacent inner Kara Sea: Quantification, variability, and paleoenvironmental implications. In: Stein, R; Fahl, K; Fütterer, D K; Galimov, E M & Stepanets, O V (eds.), Siberian River Run-off in the Kara Sea: Characterisation, Quantification, Variability, and Environmental Significance, 488 pp. Proceedings in Marine Sciences, Elsevier, Amsterdam, 6, 401-432 |
title_sort |
sediment investigations in the kara sea, supplement to: stein, ruediger; fahl, kirsten; dittmers, klaus hauke; niessen, frank; stepanets, oleg v (2003): holocene siliciclastic and organic carbon fluxes in the ob and yenisei estuaries and the adjacent inner kara sea: quantification, variability, and paleoenvironmental implications. in: stein, r; fahl, k; fütterer, d k; galimov, e m & stepanets, o v (eds.), siberian river run-off in the kara sea: characterisation, quantification, variability, and environmental significance, 488 pp. proceedings in marine sciences, elsevier, amsterdam, 6, 401-432 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2013 |
url |
https://dx.doi.org/10.1594/pangaea.804871 https://doi.pangaea.de/10.1594/PANGAEA.804871 |
long_lat |
ENVELOPE(24.117,24.117,65.717,65.717) |
geographic |
Arctic Kara Sea Klaus |
geographic_facet |
Arctic Kara Sea Klaus |
genre |
Arctic Climate change Kara Sea Magnetic susceptibility |
genre_facet |
Arctic Climate change Kara Sea Magnetic susceptibility |
op_relation |
https://dx.doi.org/10.2312/bzp_0360_2000 https://dx.doi.org/10.2312/bzpm_0393_2001 https://dx.doi.org/10.2312/bzpm_0419_2002 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.804871 https://doi.org/10.2312/bzp_0360_2000 https://doi.org/10.2312/bzpm_0393_2001 https://doi.org/10.2312/bzpm_0419_2002 |
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1766349207968415744 |