Properties of foraminifera from Denmark Strait
The Denmark Strait is a key area for the exchange of water masses and functions as a deep-water gateway between the Nordic Seas and the North Atlantic. Thus it constitutes an important part of the global thermohaline circulation (THC). The gateway aperture is influenced by eustatically and isostatic...
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2005
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.706910 https://doi.org/10.1594/PANGAEA.706910 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.706910 2023-05-15T16:00:37+02:00 Properties of foraminifera from Denmark Strait Lorenz, Andrea MEDIAN LATITUDE: 66.070526 * MEDIAN LONGITUDE: -28.884105 * SOUTH-BOUND LATITUDE: 61.525800 * WEST-BOUND LONGITUDE: -39.373800 * NORTH-BOUND LATITUDE: 71.502600 * EAST-BOUND LONGITUDE: -16.837200 * DATE/TIME START: 1995-08-18T00:00:00 * DATE/TIME END: 2002-07-08T13:44:00 2005-11-04 application/zip, 27 datasets https://doi.pangaea.de/10.1594/PANGAEA.706910 https://doi.org/10.1594/PANGAEA.706910 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.706910 https://doi.org/10.1594/PANGAEA.706910 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Lorenz, Andrea (2005): Variability of benthic foraminifera north and south of the Denmark Strait. PhD Thesis, Mathematisch-Naturwissenschaftliche Fakultät der Christian-Albrechts-Universität zu Kiel, Germany, 139 pp, urn:nbn:de:gbv:8-diss-16462 ARK-XVIII/1 Giant box corer GIK23519-5 GKG Gravity corer (Kiel type) Greenland Sea Iceland Sea Impact of Gateways on Ocean Circulation Climate and Evolution MUC MultiCorer North Greenland Sea OceanGateways PC Piston corer Polarstern POS210/2 Poseidon PS62 PS62/002-3 PS62/004-2 PS62/010-2 PS62/012-2 PS62/015-4 PS62/017-1 PS62/017-2 PS62/020-1 PS62/021-1 SL Dataset 2005 ftpangaea https://doi.org/10.1594/PANGAEA.706910 2023-01-20T07:31:15Z The Denmark Strait is a key area for the exchange of water masses and functions as a deep-water gateway between the Nordic Seas and the North Atlantic. Thus it constitutes an important part of the global thermohaline circulation (THC). The gateway aperture is influenced by eustatically and isostatically controlled changes of the Denmark Strait sill and by alteration in density contrasts between the water masses in North and South. In order to determine the faunal exchange through the changing aperture, benthic foraminiferal assemblages were analysed. Eight surface sediment samples were taken along the East Greenland continental margin during the RV Polarstern cruise ARK-XVIII/1 in July 2002 by means of a multicorer and a box corer respectively. Faunal assemblages of living (stained) and dead benthic foraminifera north and south of the Denmark Strait (980-2564 m water depth) were compared with each other. Northern and southern stations exhibit clear differences in abundances, diversities, number of species, and species composition. Due to strong bottom currents and low carbonate dissolution rates, high abundances with predominating calcareous species of dead and evidently allochthonous foraminifera were recorded south of the sill. Rather low abundances of dead autochthonous foraminiferal assemblages, containing mainly agglutinated species, were found north of the sill because of weak bottom currents and high carbonate dissolution rates. Southern stations showed a large portion of epibenthic species living as suspension feeders. In contrast endobenthic species living as substrate feeders dominated northern stations, pointing to lateral advection of food particles in South and sedimentation of food particles in North. Morphomertic measurements were performed on the high abundant foraminifer Cibicidoides wuellerstorfi. In order to supplement the data of the surface sediment samples and obtain morphometric data of glacial specimens, two long sediment cores were investigated as well. These cores were taken during the ... Dataset Denmark Strait East Greenland Greenland Greenland Sea Iceland Nordic Seas North Atlantic North Greenland PANGAEA - Data Publisher for Earth & Environmental Science Greenland ENVELOPE(-39.373800,-16.837200,71.502600,61.525800) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
ARK-XVIII/1 Giant box corer GIK23519-5 GKG Gravity corer (Kiel type) Greenland Sea Iceland Sea Impact of Gateways on Ocean Circulation Climate and Evolution MUC MultiCorer North Greenland Sea OceanGateways PC Piston corer Polarstern POS210/2 Poseidon PS62 PS62/002-3 PS62/004-2 PS62/010-2 PS62/012-2 PS62/015-4 PS62/017-1 PS62/017-2 PS62/020-1 PS62/021-1 SL |
spellingShingle |
ARK-XVIII/1 Giant box corer GIK23519-5 GKG Gravity corer (Kiel type) Greenland Sea Iceland Sea Impact of Gateways on Ocean Circulation Climate and Evolution MUC MultiCorer North Greenland Sea OceanGateways PC Piston corer Polarstern POS210/2 Poseidon PS62 PS62/002-3 PS62/004-2 PS62/010-2 PS62/012-2 PS62/015-4 PS62/017-1 PS62/017-2 PS62/020-1 PS62/021-1 SL Lorenz, Andrea Properties of foraminifera from Denmark Strait |
topic_facet |
ARK-XVIII/1 Giant box corer GIK23519-5 GKG Gravity corer (Kiel type) Greenland Sea Iceland Sea Impact of Gateways on Ocean Circulation Climate and Evolution MUC MultiCorer North Greenland Sea OceanGateways PC Piston corer Polarstern POS210/2 Poseidon PS62 PS62/002-3 PS62/004-2 PS62/010-2 PS62/012-2 PS62/015-4 PS62/017-1 PS62/017-2 PS62/020-1 PS62/021-1 SL |
description |
The Denmark Strait is a key area for the exchange of water masses and functions as a deep-water gateway between the Nordic Seas and the North Atlantic. Thus it constitutes an important part of the global thermohaline circulation (THC). The gateway aperture is influenced by eustatically and isostatically controlled changes of the Denmark Strait sill and by alteration in density contrasts between the water masses in North and South. In order to determine the faunal exchange through the changing aperture, benthic foraminiferal assemblages were analysed. Eight surface sediment samples were taken along the East Greenland continental margin during the RV Polarstern cruise ARK-XVIII/1 in July 2002 by means of a multicorer and a box corer respectively. Faunal assemblages of living (stained) and dead benthic foraminifera north and south of the Denmark Strait (980-2564 m water depth) were compared with each other. Northern and southern stations exhibit clear differences in abundances, diversities, number of species, and species composition. Due to strong bottom currents and low carbonate dissolution rates, high abundances with predominating calcareous species of dead and evidently allochthonous foraminifera were recorded south of the sill. Rather low abundances of dead autochthonous foraminiferal assemblages, containing mainly agglutinated species, were found north of the sill because of weak bottom currents and high carbonate dissolution rates. Southern stations showed a large portion of epibenthic species living as suspension feeders. In contrast endobenthic species living as substrate feeders dominated northern stations, pointing to lateral advection of food particles in South and sedimentation of food particles in North. Morphomertic measurements were performed on the high abundant foraminifer Cibicidoides wuellerstorfi. In order to supplement the data of the surface sediment samples and obtain morphometric data of glacial specimens, two long sediment cores were investigated as well. These cores were taken during the ... |
format |
Dataset |
author |
Lorenz, Andrea |
author_facet |
Lorenz, Andrea |
author_sort |
Lorenz, Andrea |
title |
Properties of foraminifera from Denmark Strait |
title_short |
Properties of foraminifera from Denmark Strait |
title_full |
Properties of foraminifera from Denmark Strait |
title_fullStr |
Properties of foraminifera from Denmark Strait |
title_full_unstemmed |
Properties of foraminifera from Denmark Strait |
title_sort |
properties of foraminifera from denmark strait |
publisher |
PANGAEA |
publishDate |
2005 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.706910 https://doi.org/10.1594/PANGAEA.706910 |
op_coverage |
MEDIAN LATITUDE: 66.070526 * MEDIAN LONGITUDE: -28.884105 * SOUTH-BOUND LATITUDE: 61.525800 * WEST-BOUND LONGITUDE: -39.373800 * NORTH-BOUND LATITUDE: 71.502600 * EAST-BOUND LONGITUDE: -16.837200 * DATE/TIME START: 1995-08-18T00:00:00 * DATE/TIME END: 2002-07-08T13:44:00 |
long_lat |
ENVELOPE(-39.373800,-16.837200,71.502600,61.525800) |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Denmark Strait East Greenland Greenland Greenland Sea Iceland Nordic Seas North Atlantic North Greenland |
genre_facet |
Denmark Strait East Greenland Greenland Greenland Sea Iceland Nordic Seas North Atlantic North Greenland |
op_source |
Supplement to: Lorenz, Andrea (2005): Variability of benthic foraminifera north and south of the Denmark Strait. PhD Thesis, Mathematisch-Naturwissenschaftliche Fakultät der Christian-Albrechts-Universität zu Kiel, Germany, 139 pp, urn:nbn:de:gbv:8-diss-16462 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.706910 https://doi.org/10.1594/PANGAEA.706910 |
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.706910 |
_version_ |
1766396613572427776 |