Distribution of ostracoda in three long sediment cores from the deep eastern Arctic Ocean
The distribution of Ostracoda in three long cores from the deep eastern Arctic Ocean was studied to determine the palaeoceanographical history of the Eurasian Basin during the late Quaternary. The samples for this study were obtained from the Lomonosov Ridge, Morris Jesup Rise and Yermak Plateau dur...
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1999
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.726557 2023-05-15T14:26:05+02:00 Distribution of ostracoda in three long sediment cores from the deep eastern Arctic Ocean Jones, Richard LI Whatley, Robin C Cronin, Thomas M Dowsett, Harry J MEDIAN LATITUDE: 84.960233 * MEDIAN LONGITUDE: 48.605500 * SOUTH-BOUND LATITUDE: 82.023700 * WEST-BOUND LONGITUDE: -14.022000 * NORTH-BOUND LATITUDE: 87.529300 * EAST-BOUND LONGITUDE: 144.166200 * DATE/TIME START: 1991-09-02T00:00:00 * DATE/TIME END: 1991-09-29T00:00:00 1999-08-14 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.726557 https://doi.org/10.1594/PANGAEA.726557 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.726557 https://doi.org/10.1594/PANGAEA.726557 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Jones, Richard LI; Whatley, Robin C; Cronin, Thomas M; Dowsett, Harry J (1999): Reconstructing late Quaternary deep-water masses in the eastern Arctic Ocean using benthonic ostracoda. Marine Micropaleontology, 37(3-4), 251-272, https://doi.org/10.1016/S0377-8398(99)00022-5 ARK-VIII/3 KAL Kasten corer Lomonosov Ridge Arctic Ocean Morris Jesup Rise Polarstern PS19/186 PS19/218 PS19/245 PS19 ARCTIC91 PS2185-6 PS2200-5 PS2212-3 Yermak Plateau Dataset 1999 ftpangaea https://doi.org/10.1594/PANGAEA.726557 https://doi.org/10.1016/S0377-8398(99)00022-5 2023-01-20T07:31:28Z The distribution of Ostracoda in three long cores from the deep eastern Arctic Ocean was studied to determine the palaeoceanographical history of the Eurasian Basin during the late Quaternary. The samples for this study were obtained from the Lomonosov Ridge, Morris Jesup Rise and Yermak Plateau during the Arctic 91 expedition. Ostracoda previously studied in coretops at the same sites as the present study have shown that individual species have a strong association with different water masses and bathymetry. Throughout the late Quaternary, cores exhibit ostracod-rich layers separated by barren intervals. On the basis of biostratigraphical, isotopic and palaeomagnetic data the fossiliferous levels are interpreted as representing interglacial stages. The twenty most significant species were selected for subsequent quantitative investigation using Cluster and Factor analyses, in order to determine similarity and variance between the assemblages. An additional statistical method employing Modern Analogues and the Squared Chord Distance dissimilarity coefficient was utilised to compare the present late Quaternary fossil samples with a modern Arctic database. The results reveal a major faunal division within the Arctic Ocean Deep Water (AODW). Highly abundant and diverse assemblages within the cores were found to group and have good analogues with the Recent bathyal depth (1000-2500 m) upper AODW assemblages. Conversely, assemblages with low abundance and diversity correlate well with abyssal depth (>3000 m) lower AODW assemblages. The palaeoceanographical history is complicated by the influence of adjacent water masses such as Canada Basin Deep Water (CBDW), Greenland Sea Deep Water (GSDW) and most importantly, Arctic Intermediate Water (AIW), which all had an influence on the ostracod assemblages during the late Quaternary. An enhanced flow of warm saline AIW into the Eurasian Basin results in species-rich upper AODW assemblages having good analogues down to 2750 m in the water column. In contrast, lower AODW ... Dataset Arctic Arctic Arctic Ocean canada basin Greenland Greenland Sea Lomonosov Ridge Yermak plateau PANGAEA - Data Publisher for Earth & Environmental Science Arctic Arctic Ocean Canada Greenland Morris Jesup Rise ENVELOPE(-20.000,-20.000,83.750,83.750) Yermak Plateau ENVELOPE(5.000,5.000,81.250,81.250) ENVELOPE(-14.022000,144.166200,87.529300,82.023700) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
ARK-VIII/3 KAL Kasten corer Lomonosov Ridge Arctic Ocean Morris Jesup Rise Polarstern PS19/186 PS19/218 PS19/245 PS19 ARCTIC91 PS2185-6 PS2200-5 PS2212-3 Yermak Plateau |
spellingShingle |
ARK-VIII/3 KAL Kasten corer Lomonosov Ridge Arctic Ocean Morris Jesup Rise Polarstern PS19/186 PS19/218 PS19/245 PS19 ARCTIC91 PS2185-6 PS2200-5 PS2212-3 Yermak Plateau Jones, Richard LI Whatley, Robin C Cronin, Thomas M Dowsett, Harry J Distribution of ostracoda in three long sediment cores from the deep eastern Arctic Ocean |
topic_facet |
ARK-VIII/3 KAL Kasten corer Lomonosov Ridge Arctic Ocean Morris Jesup Rise Polarstern PS19/186 PS19/218 PS19/245 PS19 ARCTIC91 PS2185-6 PS2200-5 PS2212-3 Yermak Plateau |
description |
The distribution of Ostracoda in three long cores from the deep eastern Arctic Ocean was studied to determine the palaeoceanographical history of the Eurasian Basin during the late Quaternary. The samples for this study were obtained from the Lomonosov Ridge, Morris Jesup Rise and Yermak Plateau during the Arctic 91 expedition. Ostracoda previously studied in coretops at the same sites as the present study have shown that individual species have a strong association with different water masses and bathymetry. Throughout the late Quaternary, cores exhibit ostracod-rich layers separated by barren intervals. On the basis of biostratigraphical, isotopic and palaeomagnetic data the fossiliferous levels are interpreted as representing interglacial stages. The twenty most significant species were selected for subsequent quantitative investigation using Cluster and Factor analyses, in order to determine similarity and variance between the assemblages. An additional statistical method employing Modern Analogues and the Squared Chord Distance dissimilarity coefficient was utilised to compare the present late Quaternary fossil samples with a modern Arctic database. The results reveal a major faunal division within the Arctic Ocean Deep Water (AODW). Highly abundant and diverse assemblages within the cores were found to group and have good analogues with the Recent bathyal depth (1000-2500 m) upper AODW assemblages. Conversely, assemblages with low abundance and diversity correlate well with abyssal depth (>3000 m) lower AODW assemblages. The palaeoceanographical history is complicated by the influence of adjacent water masses such as Canada Basin Deep Water (CBDW), Greenland Sea Deep Water (GSDW) and most importantly, Arctic Intermediate Water (AIW), which all had an influence on the ostracod assemblages during the late Quaternary. An enhanced flow of warm saline AIW into the Eurasian Basin results in species-rich upper AODW assemblages having good analogues down to 2750 m in the water column. In contrast, lower AODW ... |
format |
Dataset |
author |
Jones, Richard LI Whatley, Robin C Cronin, Thomas M Dowsett, Harry J |
author_facet |
Jones, Richard LI Whatley, Robin C Cronin, Thomas M Dowsett, Harry J |
author_sort |
Jones, Richard LI |
title |
Distribution of ostracoda in three long sediment cores from the deep eastern Arctic Ocean |
title_short |
Distribution of ostracoda in three long sediment cores from the deep eastern Arctic Ocean |
title_full |
Distribution of ostracoda in three long sediment cores from the deep eastern Arctic Ocean |
title_fullStr |
Distribution of ostracoda in three long sediment cores from the deep eastern Arctic Ocean |
title_full_unstemmed |
Distribution of ostracoda in three long sediment cores from the deep eastern Arctic Ocean |
title_sort |
distribution of ostracoda in three long sediment cores from the deep eastern arctic ocean |
publisher |
PANGAEA |
publishDate |
1999 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.726557 https://doi.org/10.1594/PANGAEA.726557 |
op_coverage |
MEDIAN LATITUDE: 84.960233 * MEDIAN LONGITUDE: 48.605500 * SOUTH-BOUND LATITUDE: 82.023700 * WEST-BOUND LONGITUDE: -14.022000 * NORTH-BOUND LATITUDE: 87.529300 * EAST-BOUND LONGITUDE: 144.166200 * DATE/TIME START: 1991-09-02T00:00:00 * DATE/TIME END: 1991-09-29T00:00:00 |
long_lat |
ENVELOPE(-20.000,-20.000,83.750,83.750) ENVELOPE(5.000,5.000,81.250,81.250) ENVELOPE(-14.022000,144.166200,87.529300,82.023700) |
geographic |
Arctic Arctic Ocean Canada Greenland Morris Jesup Rise Yermak Plateau |
geographic_facet |
Arctic Arctic Ocean Canada Greenland Morris Jesup Rise Yermak Plateau |
genre |
Arctic Arctic Arctic Ocean canada basin Greenland Greenland Sea Lomonosov Ridge Yermak plateau |
genre_facet |
Arctic Arctic Arctic Ocean canada basin Greenland Greenland Sea Lomonosov Ridge Yermak plateau |
op_source |
Supplement to: Jones, Richard LI; Whatley, Robin C; Cronin, Thomas M; Dowsett, Harry J (1999): Reconstructing late Quaternary deep-water masses in the eastern Arctic Ocean using benthonic ostracoda. Marine Micropaleontology, 37(3-4), 251-272, https://doi.org/10.1016/S0377-8398(99)00022-5 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.726557 https://doi.org/10.1594/PANGAEA.726557 |
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.726557 https://doi.org/10.1016/S0377-8398(99)00022-5 |
_version_ |
1766298558799020032 |