Biomarker content and total organic carbon of sediment cores from the Kara Sea shelf
The Kara Sea is an important area for paleo-climatic research since sea ice and brine formation take place on its shelf-two processes inducing supra-regional climatic implications and thereby connecting regional environmental variability with global climatic conditions. To gain information about pas...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.887426 2023-05-15T14:25:37+02:00 Biomarker content and total organic carbon of sediment cores from the Kara Sea shelf Hörner, Tanja Stein, Ruediger Fahl, Kirsten MEDIAN LATITUDE: 74.597149 * MEDIAN LONGITUDE: 80.437498 * SOUTH-BOUND LATITUDE: 73.414830 * WEST-BOUND LONGITUDE: 79.674660 * NORTH-BOUND LATITUDE: 76.961783 * EAST-BOUND LONGITUDE: 81.963167 * DATE/TIME START: 1999-08-26T00:00:00 * DATE/TIME END: 2000-09-19T03:35:00 2018-03-19 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.887426 https://doi.org/10.1594/PANGAEA.887426 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.887426 https://doi.org/10.1594/PANGAEA.887426 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Hörner, Tanja; Stein, Ruediger; Fahl, Kirsten (2018): Paleo-sea ice distribution and polynya variability on the Kara sea shelf during the last 12 ka. arktos - The Journal of Arctic Geosciences, https://doi.org/10.1007/s41063-018-0040-4 AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI Dataset 2018 ftpangaea https://doi.org/10.1594/PANGAEA.887426 https://doi.org/10.1007/s41063-018-0040-4 2023-01-20T07:34:07Z The Kara Sea is an important area for paleo-climatic research since sea ice and brine formation take place on its shelf-two processes inducing supra-regional climatic implications and thereby connecting regional environmental variability with global climatic conditions. To gain information about past sea ice coverage and variations, three sediment cores distributed in the southern and central parts of the marginal Sea were investigated. By applying the sea ice biomarker IP25 and the PIP25 index [phytoplankton biomarker (dinosterol)-IP25 index] post-glacial sea ice variability could be detected in the central Kara Sea (Core BP00-36/4), with most intense sea ice cover between 12.4 and 11.8 ka coinciding with the Younger Dryas (12.9-11.6 ka), and reduced sea ice cover between 10 and 8 ka during the Holocene Thermal Maximum. During the last ~7 ka, increasing sea ice indicators might indicate a Holocene cooling trend, probably induced by declining summer insolation. Furthermore, temporal changes in the fast ice?polynya distribution in the southern Kara Sea were detected: expanding fast ice during the late Holocene and a cyclic short-term Holocene climate variability documented by abrupt changes in the sea ice coverage at the BP00-07/7 core site. Core BP99-04/7 from the Yenisei estuary recorded consistently seasonal sea ice cover since ~9.3 ka, apart from five short phases of fast ice expansion to the core site. The strong influence of river run-off as well as estuary processes might prevent the detection of (short-term) climatic signals at this study site. Dataset Arctic Kara Sea Sea ice PANGAEA - Data Publisher for Earth & Environmental Science Kara Sea ENVELOPE(79.674660,81.963167,76.961783,73.414830) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
spellingShingle |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI Hörner, Tanja Stein, Ruediger Fahl, Kirsten Biomarker content and total organic carbon of sediment cores from the Kara Sea shelf |
topic_facet |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
description |
The Kara Sea is an important area for paleo-climatic research since sea ice and brine formation take place on its shelf-two processes inducing supra-regional climatic implications and thereby connecting regional environmental variability with global climatic conditions. To gain information about past sea ice coverage and variations, three sediment cores distributed in the southern and central parts of the marginal Sea were investigated. By applying the sea ice biomarker IP25 and the PIP25 index [phytoplankton biomarker (dinosterol)-IP25 index] post-glacial sea ice variability could be detected in the central Kara Sea (Core BP00-36/4), with most intense sea ice cover between 12.4 and 11.8 ka coinciding with the Younger Dryas (12.9-11.6 ka), and reduced sea ice cover between 10 and 8 ka during the Holocene Thermal Maximum. During the last ~7 ka, increasing sea ice indicators might indicate a Holocene cooling trend, probably induced by declining summer insolation. Furthermore, temporal changes in the fast ice?polynya distribution in the southern Kara Sea were detected: expanding fast ice during the late Holocene and a cyclic short-term Holocene climate variability documented by abrupt changes in the sea ice coverage at the BP00-07/7 core site. Core BP99-04/7 from the Yenisei estuary recorded consistently seasonal sea ice cover since ~9.3 ka, apart from five short phases of fast ice expansion to the core site. The strong influence of river run-off as well as estuary processes might prevent the detection of (short-term) climatic signals at this study site. |
format |
Dataset |
author |
Hörner, Tanja Stein, Ruediger Fahl, Kirsten |
author_facet |
Hörner, Tanja Stein, Ruediger Fahl, Kirsten |
author_sort |
Hörner, Tanja |
title |
Biomarker content and total organic carbon of sediment cores from the Kara Sea shelf |
title_short |
Biomarker content and total organic carbon of sediment cores from the Kara Sea shelf |
title_full |
Biomarker content and total organic carbon of sediment cores from the Kara Sea shelf |
title_fullStr |
Biomarker content and total organic carbon of sediment cores from the Kara Sea shelf |
title_full_unstemmed |
Biomarker content and total organic carbon of sediment cores from the Kara Sea shelf |
title_sort |
biomarker content and total organic carbon of sediment cores from the kara sea shelf |
publisher |
PANGAEA |
publishDate |
2018 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.887426 https://doi.org/10.1594/PANGAEA.887426 |
op_coverage |
MEDIAN LATITUDE: 74.597149 * MEDIAN LONGITUDE: 80.437498 * SOUTH-BOUND LATITUDE: 73.414830 * WEST-BOUND LONGITUDE: 79.674660 * NORTH-BOUND LATITUDE: 76.961783 * EAST-BOUND LONGITUDE: 81.963167 * DATE/TIME START: 1999-08-26T00:00:00 * DATE/TIME END: 2000-09-19T03:35:00 |
long_lat |
ENVELOPE(79.674660,81.963167,76.961783,73.414830) |
geographic |
Kara Sea |
geographic_facet |
Kara Sea |
genre |
Arctic Kara Sea Sea ice |
genre_facet |
Arctic Kara Sea Sea ice |
op_source |
Supplement to: Hörner, Tanja; Stein, Ruediger; Fahl, Kirsten (2018): Paleo-sea ice distribution and polynya variability on the Kara sea shelf during the last 12 ka. arktos - The Journal of Arctic Geosciences, https://doi.org/10.1007/s41063-018-0040-4 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.887426 https://doi.org/10.1594/PANGAEA.887426 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.887426 https://doi.org/10.1007/s41063-018-0040-4 |
_version_ |
1766298058628268032 |