Stable isotope record, foraminifera and susceptibility determination of sediment core ENAM9321
A high-resolution piston core, ENAM93-21, from a water depth of 1020 m near the Faeroe-Shetland Channel is investigated for variations in magnetic susceptibility, surface oxygen isotopes, grain size distribution, content of ice-rafted detritus (IRD), and distribution of planktonic and benthic forami...
Main Authors: | , , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
1996
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.734031 https://doi.org/10.1594/PANGAEA.734031 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.734031 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.734031 2023-05-15T16:28:28+02:00 Stable isotope record, foraminifera and susceptibility determination of sediment core ENAM9321 Rasmussen, Tine Lander Thomsen, Erik van Weering, Tjeerd C E Labeyrie, Laurent D LATITUDE: 62.800000 * LONGITUDE: -4.000000 1996-02-23 application/zip, 5 datasets https://doi.pangaea.de/10.1594/PANGAEA.734031 https://doi.org/10.1594/PANGAEA.734031 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.734031 https://doi.org/10.1594/PANGAEA.734031 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Rasmussen, Tine Lander; Thomsen, Erik; van Weering, Tjeerd C E; Labeyrie, Laurent D (1996): Rapid changes in surface and deep water conditions at the Faeroe margin during the last 58,000 years. Paleoceanography, 11(6), 757-771, https://doi.org/10.1029/96PA02618 ENAM9321 ENAM93-21 Iceland-Faroe Ridge PC Piston corer Dataset 1996 ftpangaea https://doi.org/10.1594/PANGAEA.734031 https://doi.org/10.1029/96PA02618 2023-01-20T07:31:39Z A high-resolution piston core, ENAM93-21, from a water depth of 1020 m near the Faeroe-Shetland Channel is investigated for variations in magnetic susceptibility, surface oxygen isotopes, grain size distribution, content of ice-rafted detritus (IRD), and distribution of planktonic and benthic foraminifera. The core, covering the last 58,000 years, is correlated with the Greenland ice cores and compared with paleorecords from the Norwegian Sea and the North Atlantic Ocean. All fifteen Dansgaard-Oeschger climatic cycles recognized from the investigated time period in the Greenland ice cores have been identified in the ENAM93-21 core. Each cycle is subdivided into three intervals on the basis of characteristic benthic and planktonic faunas. Interstadial intervals contain a relatively warm planktonic fauna and a benthic fauna similar to the modern fauna in the Norwegian Sea. This indicates thermohaline convection as at present, with a significant contribution of deep water to the North Atlantic Deep Water (NADW). Transitional cooling intervals are characterized by more cold water planktonic foraminfera and ice-related benthic species. The benthic fauna signifies restricted bottom water conditions and a reduced contribution to the NADW. The peak abundance of N. pachyderma (s.) and the coldest surface water conditions are found in the stadial intervals. The benthic fauna is dominated by species with an association to Atlantic Intermediate Water, suggesting an increased Atlantic influence in the Norwegian Sea, and there was probably no contribution to the NADW through the Faeroe-Shetland Channel. The three different modes of circulation can be correlated to paleoceanographic events in the Norwegian Sea and the North Atlantic Ocean. Dataset Greenland Greenland ice cores Iceland NADW North Atlantic Deep Water North Atlantic Norwegian Sea PANGAEA - Data Publisher for Earth & Environmental Science Greenland Norwegian Sea ENVELOPE(-4.000000,-4.000000,62.800000,62.800000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
ENAM9321 ENAM93-21 Iceland-Faroe Ridge PC Piston corer |
spellingShingle |
ENAM9321 ENAM93-21 Iceland-Faroe Ridge PC Piston corer Rasmussen, Tine Lander Thomsen, Erik van Weering, Tjeerd C E Labeyrie, Laurent D Stable isotope record, foraminifera and susceptibility determination of sediment core ENAM9321 |
topic_facet |
ENAM9321 ENAM93-21 Iceland-Faroe Ridge PC Piston corer |
description |
A high-resolution piston core, ENAM93-21, from a water depth of 1020 m near the Faeroe-Shetland Channel is investigated for variations in magnetic susceptibility, surface oxygen isotopes, grain size distribution, content of ice-rafted detritus (IRD), and distribution of planktonic and benthic foraminifera. The core, covering the last 58,000 years, is correlated with the Greenland ice cores and compared with paleorecords from the Norwegian Sea and the North Atlantic Ocean. All fifteen Dansgaard-Oeschger climatic cycles recognized from the investigated time period in the Greenland ice cores have been identified in the ENAM93-21 core. Each cycle is subdivided into three intervals on the basis of characteristic benthic and planktonic faunas. Interstadial intervals contain a relatively warm planktonic fauna and a benthic fauna similar to the modern fauna in the Norwegian Sea. This indicates thermohaline convection as at present, with a significant contribution of deep water to the North Atlantic Deep Water (NADW). Transitional cooling intervals are characterized by more cold water planktonic foraminfera and ice-related benthic species. The benthic fauna signifies restricted bottom water conditions and a reduced contribution to the NADW. The peak abundance of N. pachyderma (s.) and the coldest surface water conditions are found in the stadial intervals. The benthic fauna is dominated by species with an association to Atlantic Intermediate Water, suggesting an increased Atlantic influence in the Norwegian Sea, and there was probably no contribution to the NADW through the Faeroe-Shetland Channel. The three different modes of circulation can be correlated to paleoceanographic events in the Norwegian Sea and the North Atlantic Ocean. |
format |
Dataset |
author |
Rasmussen, Tine Lander Thomsen, Erik van Weering, Tjeerd C E Labeyrie, Laurent D |
author_facet |
Rasmussen, Tine Lander Thomsen, Erik van Weering, Tjeerd C E Labeyrie, Laurent D |
author_sort |
Rasmussen, Tine Lander |
title |
Stable isotope record, foraminifera and susceptibility determination of sediment core ENAM9321 |
title_short |
Stable isotope record, foraminifera and susceptibility determination of sediment core ENAM9321 |
title_full |
Stable isotope record, foraminifera and susceptibility determination of sediment core ENAM9321 |
title_fullStr |
Stable isotope record, foraminifera and susceptibility determination of sediment core ENAM9321 |
title_full_unstemmed |
Stable isotope record, foraminifera and susceptibility determination of sediment core ENAM9321 |
title_sort |
stable isotope record, foraminifera and susceptibility determination of sediment core enam9321 |
publisher |
PANGAEA |
publishDate |
1996 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.734031 https://doi.org/10.1594/PANGAEA.734031 |
op_coverage |
LATITUDE: 62.800000 * LONGITUDE: -4.000000 |
long_lat |
ENVELOPE(-4.000000,-4.000000,62.800000,62.800000) |
geographic |
Greenland Norwegian Sea |
geographic_facet |
Greenland Norwegian Sea |
genre |
Greenland Greenland ice cores Iceland NADW North Atlantic Deep Water North Atlantic Norwegian Sea |
genre_facet |
Greenland Greenland ice cores Iceland NADW North Atlantic Deep Water North Atlantic Norwegian Sea |
op_source |
Supplement to: Rasmussen, Tine Lander; Thomsen, Erik; van Weering, Tjeerd C E; Labeyrie, Laurent D (1996): Rapid changes in surface and deep water conditions at the Faeroe margin during the last 58,000 years. Paleoceanography, 11(6), 757-771, https://doi.org/10.1029/96PA02618 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.734031 https://doi.org/10.1594/PANGAEA.734031 |
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.734031 https://doi.org/10.1029/96PA02618 |
_version_ |
1766018119923400704 |