Benthic foraminifera in the marginal Arctic Ocean
Analyses of benthic foraminifera in sediment cores taken at about 1000 m water depth at the Yermak Plateau and the Barents Sea slope, adjacent to the position of the ice-sheet edge during the Last Glacial Maximum, show that paleoproductivity was reduced to about a third of its present level during p...
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2004
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.728235 https://doi.org/10.1594/PANGAEA.728235 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.728235 2023-05-15T13:22:45+02:00 Benthic foraminifera in the marginal Arctic Ocean Wollenburg, Jutta E Knies, Jochen Mackensen, Andreas MEDIAN LATITUDE: 81.921283 * MEDIAN LONGITUDE: 18.551219 * SOUTH-BOUND LATITUDE: 79.694800 * WEST-BOUND LONGITUDE: -14.368700 * NORTH-BOUND LATITUDE: 90.000000 * EAST-BOUND LONGITUDE: 159.167000 * DATE/TIME START: 1991-07-08T18:59:00 * DATE/TIME END: 1997-07-15T19:07:00 2004-09-30 application/zip, 7 datasets https://doi.pangaea.de/10.1594/PANGAEA.728235 https://doi.org/10.1594/PANGAEA.728235 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.728235 https://doi.org/10.1594/PANGAEA.728235 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Wollenburg, Jutta E; Knies, Jochen; Mackensen, Andreas (2004): High-resolution palaeoproductivity fluctuations during the past 24 kyr as indicated by benthic foraminifera in the marginal Arctic Ocean. Palaeogeography, Palaeoclimatology, Palaeoecology, 204(3-4), 209-238, https://doi.org/10.1016/S0031-0182(03)00726-0 Amundsen Basin ARK-IX/4 ARK-VIII/2 ARK-VIII/3 ARK-XIII/2 AWI_Paleo Barents Sea Gakkel Ridge Arctic Ocean Giant box corer GKG Gravity corer (Kiel type) KAL Kasten corer Lomonosov Ridge Makarov Basin MIC MiniCorer Morris Jesup Rise MSN MUC MultiCorer Multiple opening/closing net Nansen Basin Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS19/091 PS19/094 PS19/100 PS19/111 PS19/112 PS19/113 PS19/114 PS19/117 PS19/150 PS19/152 PS19/153 PS19/154 PS19/157 PS19/158 PS19/159 PS19/160 PS19/161 PS19/164 PS19/165 PS19/166 PS19/167 PS19/172 PS19/173 Dataset 2004 ftpangaea https://doi.org/10.1594/PANGAEA.728235 https://doi.org/10.1016/S0031-0182(03)00726-0 2023-01-20T07:31:31Z Analyses of benthic foraminifera in sediment cores taken at about 1000 m water depth at the Yermak Plateau and the Barents Sea slope, adjacent to the position of the ice-sheet edge during the Last Glacial Maximum, show that paleoproductivity was reduced to about a third of its present level during peak glacial stadials. These reduced values are still higher than values for modern, permanently ice-covered regions, suggesting that the core locations were at least partially ice-free even during stadials. Paleoproductivity at the core locations was higher than or equal to that of today during initial deglaciations and warm substages. Peak paleoproductivity occurred in samples with low-salinity surface waters as indicated by oxygen isotope values of planktonic foraminifera, and slightly after increased abundance of 'Atlantic species', suggesting that enhanced advection of warmer waters from the Atlantic supported the initial ice-sheet retreat. During the Holocene Climatic Optimum productivity was much less than at present on the Yermak Plateau, high at the Barents Sea site, perhaps because of increased advection of Atlantic water to the latter site and heavier ice coverage at the former. After this optimum, paleoproductivity at both sites was similar, with slightly lower values during cold periods such as the Little Ice Age. Dataset amundsen basin Arctic Arctic Arctic Ocean Barents Sea Foraminifera* Ice Sheet Lomonosov Ridge makarov basin Nansen Basin Planktonic foraminifera Yermak plateau PANGAEA - Data Publisher for Earth & Environmental Science Arctic Arctic Ocean Barents Sea Yermak Plateau ENVELOPE(5.000,5.000,81.250,81.250) Gakkel Ridge ENVELOPE(90.000,90.000,87.000,87.000) Makarov Basin ENVELOPE(170.000,170.000,87.000,87.000) Morris Jesup Rise ENVELOPE(-20.000,-20.000,83.750,83.750) Amundsen Basin ENVELOPE(74.000,74.000,87.000,87.000) ENVELOPE(-14.368700,159.167000,90.000000,79.694800) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Amundsen Basin ARK-IX/4 ARK-VIII/2 ARK-VIII/3 ARK-XIII/2 AWI_Paleo Barents Sea Gakkel Ridge Arctic Ocean Giant box corer GKG Gravity corer (Kiel type) KAL Kasten corer Lomonosov Ridge Makarov Basin MIC MiniCorer Morris Jesup Rise MSN MUC MultiCorer Multiple opening/closing net Nansen Basin Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS19/091 PS19/094 PS19/100 PS19/111 PS19/112 PS19/113 PS19/114 PS19/117 PS19/150 PS19/152 PS19/153 PS19/154 PS19/157 PS19/158 PS19/159 PS19/160 PS19/161 PS19/164 PS19/165 PS19/166 PS19/167 PS19/172 PS19/173 |
spellingShingle |
Amundsen Basin ARK-IX/4 ARK-VIII/2 ARK-VIII/3 ARK-XIII/2 AWI_Paleo Barents Sea Gakkel Ridge Arctic Ocean Giant box corer GKG Gravity corer (Kiel type) KAL Kasten corer Lomonosov Ridge Makarov Basin MIC MiniCorer Morris Jesup Rise MSN MUC MultiCorer Multiple opening/closing net Nansen Basin Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS19/091 PS19/094 PS19/100 PS19/111 PS19/112 PS19/113 PS19/114 PS19/117 PS19/150 PS19/152 PS19/153 PS19/154 PS19/157 PS19/158 PS19/159 PS19/160 PS19/161 PS19/164 PS19/165 PS19/166 PS19/167 PS19/172 PS19/173 Wollenburg, Jutta E Knies, Jochen Mackensen, Andreas Benthic foraminifera in the marginal Arctic Ocean |
topic_facet |
Amundsen Basin ARK-IX/4 ARK-VIII/2 ARK-VIII/3 ARK-XIII/2 AWI_Paleo Barents Sea Gakkel Ridge Arctic Ocean Giant box corer GKG Gravity corer (Kiel type) KAL Kasten corer Lomonosov Ridge Makarov Basin MIC MiniCorer Morris Jesup Rise MSN MUC MultiCorer Multiple opening/closing net Nansen Basin Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS19/091 PS19/094 PS19/100 PS19/111 PS19/112 PS19/113 PS19/114 PS19/117 PS19/150 PS19/152 PS19/153 PS19/154 PS19/157 PS19/158 PS19/159 PS19/160 PS19/161 PS19/164 PS19/165 PS19/166 PS19/167 PS19/172 PS19/173 |
description |
Analyses of benthic foraminifera in sediment cores taken at about 1000 m water depth at the Yermak Plateau and the Barents Sea slope, adjacent to the position of the ice-sheet edge during the Last Glacial Maximum, show that paleoproductivity was reduced to about a third of its present level during peak glacial stadials. These reduced values are still higher than values for modern, permanently ice-covered regions, suggesting that the core locations were at least partially ice-free even during stadials. Paleoproductivity at the core locations was higher than or equal to that of today during initial deglaciations and warm substages. Peak paleoproductivity occurred in samples with low-salinity surface waters as indicated by oxygen isotope values of planktonic foraminifera, and slightly after increased abundance of 'Atlantic species', suggesting that enhanced advection of warmer waters from the Atlantic supported the initial ice-sheet retreat. During the Holocene Climatic Optimum productivity was much less than at present on the Yermak Plateau, high at the Barents Sea site, perhaps because of increased advection of Atlantic water to the latter site and heavier ice coverage at the former. After this optimum, paleoproductivity at both sites was similar, with slightly lower values during cold periods such as the Little Ice Age. |
format |
Dataset |
author |
Wollenburg, Jutta E Knies, Jochen Mackensen, Andreas |
author_facet |
Wollenburg, Jutta E Knies, Jochen Mackensen, Andreas |
author_sort |
Wollenburg, Jutta E |
title |
Benthic foraminifera in the marginal Arctic Ocean |
title_short |
Benthic foraminifera in the marginal Arctic Ocean |
title_full |
Benthic foraminifera in the marginal Arctic Ocean |
title_fullStr |
Benthic foraminifera in the marginal Arctic Ocean |
title_full_unstemmed |
Benthic foraminifera in the marginal Arctic Ocean |
title_sort |
benthic foraminifera in the marginal arctic ocean |
publisher |
PANGAEA |
publishDate |
2004 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.728235 https://doi.org/10.1594/PANGAEA.728235 |
op_coverage |
MEDIAN LATITUDE: 81.921283 * MEDIAN LONGITUDE: 18.551219 * SOUTH-BOUND LATITUDE: 79.694800 * WEST-BOUND LONGITUDE: -14.368700 * NORTH-BOUND LATITUDE: 90.000000 * EAST-BOUND LONGITUDE: 159.167000 * DATE/TIME START: 1991-07-08T18:59:00 * DATE/TIME END: 1997-07-15T19:07:00 |
long_lat |
ENVELOPE(5.000,5.000,81.250,81.250) ENVELOPE(90.000,90.000,87.000,87.000) ENVELOPE(170.000,170.000,87.000,87.000) ENVELOPE(-20.000,-20.000,83.750,83.750) ENVELOPE(74.000,74.000,87.000,87.000) ENVELOPE(-14.368700,159.167000,90.000000,79.694800) |
geographic |
Arctic Arctic Ocean Barents Sea Yermak Plateau Gakkel Ridge Makarov Basin Morris Jesup Rise Amundsen Basin |
geographic_facet |
Arctic Arctic Ocean Barents Sea Yermak Plateau Gakkel Ridge Makarov Basin Morris Jesup Rise Amundsen Basin |
genre |
amundsen basin Arctic Arctic Arctic Ocean Barents Sea Foraminifera* Ice Sheet Lomonosov Ridge makarov basin Nansen Basin Planktonic foraminifera Yermak plateau |
genre_facet |
amundsen basin Arctic Arctic Arctic Ocean Barents Sea Foraminifera* Ice Sheet Lomonosov Ridge makarov basin Nansen Basin Planktonic foraminifera Yermak plateau |
op_source |
Supplement to: Wollenburg, Jutta E; Knies, Jochen; Mackensen, Andreas (2004): High-resolution palaeoproductivity fluctuations during the past 24 kyr as indicated by benthic foraminifera in the marginal Arctic Ocean. Palaeogeography, Palaeoclimatology, Palaeoecology, 204(3-4), 209-238, https://doi.org/10.1016/S0031-0182(03)00726-0 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.728235 https://doi.org/10.1594/PANGAEA.728235 |
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.728235 https://doi.org/10.1016/S0031-0182(03)00726-0 |
_version_ |
1766366816610811904 |