Benthic foraminifera of surface sediments in the Arctic Ocean
The Recent distribution of living and dead benthic foraminifera of the Arctic Ocean proper has been examined in surface sediments that were sampled during the International Arctic Ocean Expedition 1991 (Arctic 91). The samples represent the Amundsen and Nansen Basins, the Morris Jesup Rise, and the...
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PANGAEA
1994
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.728640 https://doi.org/10.1594/PANGAEA.728640 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.728640 2024-09-15T17:38:52+00:00 Benthic foraminifera of surface sediments in the Arctic Ocean Bergsten, Helene MEDIAN LATITUDE: 84.307750 * MEDIAN LONGITUDE: 1.605186 * SOUTH-BOUND LATITUDE: 79.694800 * WEST-BOUND LONGITUDE: -14.368700 * NORTH-BOUND LATITUDE: 90.000000 * EAST-BOUND LONGITUDE: 15.672300 * DATE/TIME START: 1991-09-07T00:00:00 * DATE/TIME END: 1991-10-02T00:00:00 1994 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.728640 https://doi.org/10.1594/PANGAEA.728640 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.728640 https://doi.org/10.1594/PANGAEA.728640 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Bergsten, Helene (1994): Recent benthic foraminifera of a transect from the North Pole to the Yermak Plateau, eastern central Arctic Ocean. Marine Geology, 119(3-4), 251-267, https://doi.org/10.1016/0025-3227(94)90184-8 Amundsen Basin ARK-VIII/3 AWI_Paleo Giant box corer GKG Gravity corer (Kiel type) Morris Jesup Rise Nansen Basin Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS19/194 PS19/198 PS19/200 PS19/204 PS19/206 PS19/210 PS19/214 PS19/216 PS19/218 PS19/220 PS19/222 PS19/226 PS19/239 PS19/241 PS19/245 PS19/246 PS19/249 PS19/252 PS19 ARCTIC91 PS2190-2 PS2192-1 PS2193-2 PS2194-1 PS2195-4 PS2196-2 PS2198-1 PS2199-1 PS2200-2 PS2201-1 PS2202-1 PS2205-2 PS2209-1 PS2210-1 PS2212-1 PS2213-1 PS2214-1 PS2215-2 Quaternary Environment of the Eurasian North QUEEN SL dataset publication series 1994 ftpangaea https://doi.org/10.1594/PANGAEA.72864010.1016/0025-3227(94)90184-8 2024-07-24T02:31:20Z The Recent distribution of living and dead benthic foraminifera of the Arctic Ocean proper has been examined in surface sediments that were sampled during the International Arctic Ocean Expedition 1991 (Arctic 91). The samples represent the Amundsen and Nansen Basins, the Morris Jesup Rise, and the Yermak Plateau from 90°N to 79°42.4'N, 05°15.6'E. Due to the technical difficulties of deep-sea drilling in the Arctic Ocean these areas have, until now, been investigated only in very low density sampling. The Arctic 91 sites of this study cover a water depth range between 552 and 4375 m and represent three sites which are seasonally ice-free, although not yearly, while the other sites are characterized by permanent sea-ice. There is a Recent production of benthic foraminifera in the whole investigation area and all surface samples contain both benthic and planktonic foraminifera. Abyssal assemblages are recorded in the Amundsen and Nansen Basins where Stetsonia arctica dominates with high abundances. It is, however, also possible to distinguish these two basins by the use of diagnostic species. At intermediate water depths (500 to 2000-2500 m) the faunas show higher diversities and higher abundances of Atlantic species than the deep-sea sites. Mixing of North Atlantic water down to approximately 2500 m, is suggested to explain the influx of Atlantic species on the Yermak Plateau and the Morris Jesup Rise. The foraminiferal tests are well preserved within the investigation area and dissolution does not seem to be very obvious in the deeper areas. There is no evidence from the Recent foraminiferal faunas that the bottom waters of the eastern, central Arctic Ocean are undersaturated with respect to calcium carbonate and the deep-sea areas appear, therefore, to lie above the present CCD. Other/Unknown Material amundsen basin Arctic Arctic Ocean Foraminifera* Nansen Basin North Atlantic Planktonic foraminifera Sea ice Yermak plateau PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-14.368700,15.672300,90.000000,79.694800) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Amundsen Basin ARK-VIII/3 AWI_Paleo Giant box corer GKG Gravity corer (Kiel type) Morris Jesup Rise Nansen Basin Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS19/194 PS19/198 PS19/200 PS19/204 PS19/206 PS19/210 PS19/214 PS19/216 PS19/218 PS19/220 PS19/222 PS19/226 PS19/239 PS19/241 PS19/245 PS19/246 PS19/249 PS19/252 PS19 ARCTIC91 PS2190-2 PS2192-1 PS2193-2 PS2194-1 PS2195-4 PS2196-2 PS2198-1 PS2199-1 PS2200-2 PS2201-1 PS2202-1 PS2205-2 PS2209-1 PS2210-1 PS2212-1 PS2213-1 PS2214-1 PS2215-2 Quaternary Environment of the Eurasian North QUEEN SL |
spellingShingle |
Amundsen Basin ARK-VIII/3 AWI_Paleo Giant box corer GKG Gravity corer (Kiel type) Morris Jesup Rise Nansen Basin Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS19/194 PS19/198 PS19/200 PS19/204 PS19/206 PS19/210 PS19/214 PS19/216 PS19/218 PS19/220 PS19/222 PS19/226 PS19/239 PS19/241 PS19/245 PS19/246 PS19/249 PS19/252 PS19 ARCTIC91 PS2190-2 PS2192-1 PS2193-2 PS2194-1 PS2195-4 PS2196-2 PS2198-1 PS2199-1 PS2200-2 PS2201-1 PS2202-1 PS2205-2 PS2209-1 PS2210-1 PS2212-1 PS2213-1 PS2214-1 PS2215-2 Quaternary Environment of the Eurasian North QUEEN SL Bergsten, Helene Benthic foraminifera of surface sediments in the Arctic Ocean |
topic_facet |
Amundsen Basin ARK-VIII/3 AWI_Paleo Giant box corer GKG Gravity corer (Kiel type) Morris Jesup Rise Nansen Basin Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS19/194 PS19/198 PS19/200 PS19/204 PS19/206 PS19/210 PS19/214 PS19/216 PS19/218 PS19/220 PS19/222 PS19/226 PS19/239 PS19/241 PS19/245 PS19/246 PS19/249 PS19/252 PS19 ARCTIC91 PS2190-2 PS2192-1 PS2193-2 PS2194-1 PS2195-4 PS2196-2 PS2198-1 PS2199-1 PS2200-2 PS2201-1 PS2202-1 PS2205-2 PS2209-1 PS2210-1 PS2212-1 PS2213-1 PS2214-1 PS2215-2 Quaternary Environment of the Eurasian North QUEEN SL |
description |
The Recent distribution of living and dead benthic foraminifera of the Arctic Ocean proper has been examined in surface sediments that were sampled during the International Arctic Ocean Expedition 1991 (Arctic 91). The samples represent the Amundsen and Nansen Basins, the Morris Jesup Rise, and the Yermak Plateau from 90°N to 79°42.4'N, 05°15.6'E. Due to the technical difficulties of deep-sea drilling in the Arctic Ocean these areas have, until now, been investigated only in very low density sampling. The Arctic 91 sites of this study cover a water depth range between 552 and 4375 m and represent three sites which are seasonally ice-free, although not yearly, while the other sites are characterized by permanent sea-ice. There is a Recent production of benthic foraminifera in the whole investigation area and all surface samples contain both benthic and planktonic foraminifera. Abyssal assemblages are recorded in the Amundsen and Nansen Basins where Stetsonia arctica dominates with high abundances. It is, however, also possible to distinguish these two basins by the use of diagnostic species. At intermediate water depths (500 to 2000-2500 m) the faunas show higher diversities and higher abundances of Atlantic species than the deep-sea sites. Mixing of North Atlantic water down to approximately 2500 m, is suggested to explain the influx of Atlantic species on the Yermak Plateau and the Morris Jesup Rise. The foraminiferal tests are well preserved within the investigation area and dissolution does not seem to be very obvious in the deeper areas. There is no evidence from the Recent foraminiferal faunas that the bottom waters of the eastern, central Arctic Ocean are undersaturated with respect to calcium carbonate and the deep-sea areas appear, therefore, to lie above the present CCD. |
format |
Other/Unknown Material |
author |
Bergsten, Helene |
author_facet |
Bergsten, Helene |
author_sort |
Bergsten, Helene |
title |
Benthic foraminifera of surface sediments in the Arctic Ocean |
title_short |
Benthic foraminifera of surface sediments in the Arctic Ocean |
title_full |
Benthic foraminifera of surface sediments in the Arctic Ocean |
title_fullStr |
Benthic foraminifera of surface sediments in the Arctic Ocean |
title_full_unstemmed |
Benthic foraminifera of surface sediments in the Arctic Ocean |
title_sort |
benthic foraminifera of surface sediments in the arctic ocean |
publisher |
PANGAEA |
publishDate |
1994 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.728640 https://doi.org/10.1594/PANGAEA.728640 |
op_coverage |
MEDIAN LATITUDE: 84.307750 * MEDIAN LONGITUDE: 1.605186 * SOUTH-BOUND LATITUDE: 79.694800 * WEST-BOUND LONGITUDE: -14.368700 * NORTH-BOUND LATITUDE: 90.000000 * EAST-BOUND LONGITUDE: 15.672300 * DATE/TIME START: 1991-09-07T00:00:00 * DATE/TIME END: 1991-10-02T00:00:00 |
long_lat |
ENVELOPE(-14.368700,15.672300,90.000000,79.694800) |
genre |
amundsen basin Arctic Arctic Ocean Foraminifera* Nansen Basin North Atlantic Planktonic foraminifera Sea ice Yermak plateau |
genre_facet |
amundsen basin Arctic Arctic Ocean Foraminifera* Nansen Basin North Atlantic Planktonic foraminifera Sea ice Yermak plateau |
op_source |
Supplement to: Bergsten, Helene (1994): Recent benthic foraminifera of a transect from the North Pole to the Yermak Plateau, eastern central Arctic Ocean. Marine Geology, 119(3-4), 251-267, https://doi.org/10.1016/0025-3227(94)90184-8 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.728640 https://doi.org/10.1594/PANGAEA.728640 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.72864010.1016/0025-3227(94)90184-8 |
_version_ |
1810475821692878848 |