Age models and stable isotopes of sediment cores from the northern seas
Oxygen and carbon isotope measurements were carried out on tests of planktic foraminifers N. pachyderma (sin.) from eight sediment cores taken from the eastern Arctic Ocean, the Fram Strait, and the lceland Sea, in order to reconstruct Arctic Ocean and Norwegian-Greenland Sea circulation patterns an...
Main Author: | |
---|---|
Format: | Other/Unknown Material |
Language: | English |
Published: |
PANGAEA
1992
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.728605 https://doi.org/10.1594/PANGAEA.728605 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.728605 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
49-08 49-13 49-14 49-15 49-18 49-20 49-39 49-43 49-50 52-04 52-09 52-14 52-24 52-28 52-30 52-33 52-37 52-38 57-04 57-06 57-07 57-08 57-09 57-10 57-11 57-12 57-13 57-14 57-20 58-08 Antarctic Ocean Arctic Ocean ARK-I/3 ARK-II/4 ARK-II/5 ARK-IV/3 ARK-VII/1 BC Box corer BS88/6_10B BS88/6_3 BS88/6_4 BS88/6_6 BS88/6_7 BS88/6_8 CTD/Rosette CTD-RO Fram Strait GEOMAR Giant box corer |
spellingShingle |
49-08 49-13 49-14 49-15 49-18 49-20 49-39 49-43 49-50 52-04 52-09 52-14 52-24 52-28 52-30 52-33 52-37 52-38 57-04 57-06 57-07 57-08 57-09 57-10 57-11 57-12 57-13 57-14 57-20 58-08 Antarctic Ocean Arctic Ocean ARK-I/3 ARK-II/4 ARK-II/5 ARK-IV/3 ARK-VII/1 BC Box corer BS88/6_10B BS88/6_3 BS88/6_4 BS88/6_6 BS88/6_7 BS88/6_8 CTD/Rosette CTD-RO Fram Strait GEOMAR Giant box corer Köhler, Sabine E I Age models and stable isotopes of sediment cores from the northern seas |
topic_facet |
49-08 49-13 49-14 49-15 49-18 49-20 49-39 49-43 49-50 52-04 52-09 52-14 52-24 52-28 52-30 52-33 52-37 52-38 57-04 57-06 57-07 57-08 57-09 57-10 57-11 57-12 57-13 57-14 57-20 58-08 Antarctic Ocean Arctic Ocean ARK-I/3 ARK-II/4 ARK-II/5 ARK-IV/3 ARK-VII/1 BC Box corer BS88/6_10B BS88/6_3 BS88/6_4 BS88/6_6 BS88/6_7 BS88/6_8 CTD/Rosette CTD-RO Fram Strait GEOMAR Giant box corer |
description |
Oxygen and carbon isotope measurements were carried out on tests of planktic foraminifers N. pachyderma (sin.) from eight sediment cores taken from the eastern Arctic Ocean, the Fram Strait, and the lceland Sea, in order to reconstruct Arctic Ocean and Norwegian-Greenland Sea circulation patterns and ice covers during the last 130,000 years. In addition, the influence of ice, temperature and salinity effects on the isotopic signal was quantified. Isotope measurements on foraminifers from sediment surface samples were used to elucidate the ecology of N. pachyderma (sin.). Changes in the oxygen and carbon isotope composition of N. pachyderma (sin.) from sediment surface samples document the horizontal and vertical changes of water mass boundaries controlled by water temperature and salinity, because N. pachyderma (sin.) shows drastic changes in depth habitats, depending on the water mass properties. It was able to be shown that in the investigated areas a regional and spatial apparent increase of the ice effect occurred. This happened especially during the termination I by direct advection of meltwaters from nearby continents or during the termination and in interglacials by supply of isotopically light water from rivers. A northwardly proceeding overprint of the 'global' ice effect, increasing from the Norwegian-Greenland Sea to the Arctic Ocean, was not able to be demonstrated. By means of a model the influence of temperature and salinity on the global ice volume signal during the last 130,000 years was recorded. In combination with the results of this study, the model was the basis for a reconstruction of the paleoceanographic development of the Arctic Ocean and the Norwegian-Greenland Sea during this time interval. The conception of a relatively thick and permanent sea ice cover in the Nordic Seas during glacial times should be replaced by the model of a seasonally and regionally highly variable ice cover. Only during isotope stage 5e may there have been a local deep water formation in the Fram Strait. |
format |
Other/Unknown Material |
author |
Köhler, Sabine E I |
author_facet |
Köhler, Sabine E I |
author_sort |
Köhler, Sabine E I |
title |
Age models and stable isotopes of sediment cores from the northern seas |
title_short |
Age models and stable isotopes of sediment cores from the northern seas |
title_full |
Age models and stable isotopes of sediment cores from the northern seas |
title_fullStr |
Age models and stable isotopes of sediment cores from the northern seas |
title_full_unstemmed |
Age models and stable isotopes of sediment cores from the northern seas |
title_sort |
age models and stable isotopes of sediment cores from the northern seas |
publisher |
PANGAEA |
publishDate |
1992 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.728605 https://doi.org/10.1594/PANGAEA.728605 |
op_coverage |
MEDIAN LATITUDE: 82.765430 * MEDIAN LONGITUDE: 16.168901 * SOUTH-BOUND LATITUDE: 60.090333 * WEST-BOUND LONGITUDE: -31.072000 * NORTH-BOUND LATITUDE: 86.131667 * EAST-BOUND LONGITUDE: 32.053333 * DATE/TIME START: 1982-01-01T00:00:00 * DATE/TIME END: 1990-06-17T04:05:00 |
long_lat |
ENVELOPE(-31.072000,32.053333,86.131667,60.090333) |
genre |
Antarc* Antarctic Antarctic Ocean Arctic Ocean Fram Strait Greenland Greenland Sea Nordic Seas Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Ocean Arctic Ocean Fram Strait Greenland Greenland Sea Nordic Seas Sea ice |
op_source |
Supplement to: Köhler, Sabine E I (1992): Spätquartäre paläo-ozeanographische Entwicklung des Nordpolarmeeres anhand von Sauerstoff- und Kohlenstoff-Isotopenverhältnissen der planktischen Foraminifere. GEOMAR Report, GEOMAR Research Center for Marine Geosciences, Christian Albrechts University in Kiel, 13, 104 pp |
op_relation |
Köhler, Sabine E I (1991): Spätquartäre paläo-ozeanographische Entwicklung des Nordpolarmeeres und Europäischen Nordmeeres anhand von Sauerstoff- und Kohlenstoff-Isotopenverhältnissen der planktischen Foraminifere Neogloboquadrina pachyderma (sin.) [dissertation]. Mathematisch-Naturwissenschaftliche Fakultät der Christian-Albrechts-Universität zu Kiel, Germany, 104 pp, hdl:10013/epic.33412.d001 https://doi.pangaea.de/10.1594/PANGAEA.728605 https://doi.org/10.1594/PANGAEA.728605 |
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.728605 |
_version_ |
1810289098943889408 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.728605 2024-09-15T17:48:05+00:00 Age models and stable isotopes of sediment cores from the northern seas Köhler, Sabine E I MEDIAN LATITUDE: 82.765430 * MEDIAN LONGITUDE: 16.168901 * SOUTH-BOUND LATITUDE: 60.090333 * WEST-BOUND LONGITUDE: -31.072000 * NORTH-BOUND LATITUDE: 86.131667 * EAST-BOUND LONGITUDE: 32.053333 * DATE/TIME START: 1982-01-01T00:00:00 * DATE/TIME END: 1990-06-17T04:05:00 1992 application/zip, 31 datasets https://doi.pangaea.de/10.1594/PANGAEA.728605 https://doi.org/10.1594/PANGAEA.728605 en eng PANGAEA Köhler, Sabine E I (1991): Spätquartäre paläo-ozeanographische Entwicklung des Nordpolarmeeres und Europäischen Nordmeeres anhand von Sauerstoff- und Kohlenstoff-Isotopenverhältnissen der planktischen Foraminifere Neogloboquadrina pachyderma (sin.) [dissertation]. Mathematisch-Naturwissenschaftliche Fakultät der Christian-Albrechts-Universität zu Kiel, Germany, 104 pp, hdl:10013/epic.33412.d001 https://doi.pangaea.de/10.1594/PANGAEA.728605 https://doi.org/10.1594/PANGAEA.728605 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Köhler, Sabine E I (1992): Spätquartäre paläo-ozeanographische Entwicklung des Nordpolarmeeres anhand von Sauerstoff- und Kohlenstoff-Isotopenverhältnissen der planktischen Foraminifere. GEOMAR Report, GEOMAR Research Center for Marine Geosciences, Christian Albrechts University in Kiel, 13, 104 pp 49-08 49-13 49-14 49-15 49-18 49-20 49-39 49-43 49-50 52-04 52-09 52-14 52-24 52-28 52-30 52-33 52-37 52-38 57-04 57-06 57-07 57-08 57-09 57-10 57-11 57-12 57-13 57-14 57-20 58-08 Antarctic Ocean Arctic Ocean ARK-I/3 ARK-II/4 ARK-II/5 ARK-IV/3 ARK-VII/1 BC Box corer BS88/6_10B BS88/6_3 BS88/6_4 BS88/6_6 BS88/6_7 BS88/6_8 CTD/Rosette CTD-RO Fram Strait GEOMAR Giant box corer dataset publication series 1992 ftpangaea https://doi.org/10.1594/PANGAEA.728605 2024-07-24T02:31:20Z Oxygen and carbon isotope measurements were carried out on tests of planktic foraminifers N. pachyderma (sin.) from eight sediment cores taken from the eastern Arctic Ocean, the Fram Strait, and the lceland Sea, in order to reconstruct Arctic Ocean and Norwegian-Greenland Sea circulation patterns and ice covers during the last 130,000 years. In addition, the influence of ice, temperature and salinity effects on the isotopic signal was quantified. Isotope measurements on foraminifers from sediment surface samples were used to elucidate the ecology of N. pachyderma (sin.). Changes in the oxygen and carbon isotope composition of N. pachyderma (sin.) from sediment surface samples document the horizontal and vertical changes of water mass boundaries controlled by water temperature and salinity, because N. pachyderma (sin.) shows drastic changes in depth habitats, depending on the water mass properties. It was able to be shown that in the investigated areas a regional and spatial apparent increase of the ice effect occurred. This happened especially during the termination I by direct advection of meltwaters from nearby continents or during the termination and in interglacials by supply of isotopically light water from rivers. A northwardly proceeding overprint of the 'global' ice effect, increasing from the Norwegian-Greenland Sea to the Arctic Ocean, was not able to be demonstrated. By means of a model the influence of temperature and salinity on the global ice volume signal during the last 130,000 years was recorded. In combination with the results of this study, the model was the basis for a reconstruction of the paleoceanographic development of the Arctic Ocean and the Norwegian-Greenland Sea during this time interval. The conception of a relatively thick and permanent sea ice cover in the Nordic Seas during glacial times should be replaced by the model of a seasonally and regionally highly variable ice cover. Only during isotope stage 5e may there have been a local deep water formation in the Fram Strait. Other/Unknown Material Antarc* Antarctic Antarctic Ocean Arctic Ocean Fram Strait Greenland Greenland Sea Nordic Seas Sea ice PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-31.072000,32.053333,86.131667,60.090333) |