Relative abundance and opal input of radiolarians measured on sediment core PS1768-8 and PS2498-1 ...
We present a new proxy, the oxygen isotope measurements (d18O) of radiolarian opal from sediment cores in the Subantarctic Zone (SAZ) and Permanent Open Ocean Zone (POOZ) of the Atlantic Southern Ocean. The SAZ core records of radiolarian and foraminiferal d18O are well correlated. In the POOZ core,...
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ftdatacite:10.1594/pangaea.719184 2024-03-31T07:55:18+00:00 Relative abundance and opal input of radiolarians measured on sediment core PS1768-8 and PS2498-1 ... Abelmann, Andrea 2009 application/zip https://dx.doi.org/10.1594/pangaea.719184 https://doi.pangaea.de/10.1594/PANGAEA.719184 en eng PANGAEA https://dx.doi.org/10.1016/j.dsr.2008.12.019 Data access is restricted (moratorium, sensitive data, license constraints) Licensing unknown: Please contact principal investigator/authors to gain access and request licensing terms unknown Gravity corer Kiel type ANT-VIII/3 ANT-XI/2 Polarstern Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo article Publication Series of Datasets Collection 2009 ftdatacite https://doi.org/10.1594/pangaea.71918410.1016/j.dsr.2008.12.019 2024-03-04T13:35:39Z We present a new proxy, the oxygen isotope measurements (d18O) of radiolarian opal from sediment cores in the Subantarctic Zone (SAZ) and Permanent Open Ocean Zone (POOZ) of the Atlantic Southern Ocean. The SAZ core records of radiolarian and foraminiferal d18O are well correlated. In the POOZ core, only radiolarian 18O shifts to distinctly lower values during the glacial (when this core was in the Sea Ice Zone (SIZ)), while relevant foraminiferal and diatomaceous d18O records exhibit no such shift. This suggests a seasonal salinity change derived from the melting of snow accumulated on sea ice. We propose that a northward relocation of the Southern Ocean zonal system and enhanced water-vapor transport from lower latitudes forced the development of a stratified sea-surface in the northern SIZ during late glacial spring time. This raises unexpected aspects for numerical modeling of past atmospheric coupling and moisture transport, as well as on glacial Southern Ocean stratification and its implication for ... : Data submitted 2009-06-11; set to protected on request of first author (2014-08-13, PDI-8220). ... Article in Journal/Newspaper Sea ice Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) Southern Ocean |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Gravity corer Kiel type ANT-VIII/3 ANT-XI/2 Polarstern Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo |
spellingShingle |
Gravity corer Kiel type ANT-VIII/3 ANT-XI/2 Polarstern Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo Abelmann, Andrea Relative abundance and opal input of radiolarians measured on sediment core PS1768-8 and PS2498-1 ... |
topic_facet |
Gravity corer Kiel type ANT-VIII/3 ANT-XI/2 Polarstern Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo |
description |
We present a new proxy, the oxygen isotope measurements (d18O) of radiolarian opal from sediment cores in the Subantarctic Zone (SAZ) and Permanent Open Ocean Zone (POOZ) of the Atlantic Southern Ocean. The SAZ core records of radiolarian and foraminiferal d18O are well correlated. In the POOZ core, only radiolarian 18O shifts to distinctly lower values during the glacial (when this core was in the Sea Ice Zone (SIZ)), while relevant foraminiferal and diatomaceous d18O records exhibit no such shift. This suggests a seasonal salinity change derived from the melting of snow accumulated on sea ice. We propose that a northward relocation of the Southern Ocean zonal system and enhanced water-vapor transport from lower latitudes forced the development of a stratified sea-surface in the northern SIZ during late glacial spring time. This raises unexpected aspects for numerical modeling of past atmospheric coupling and moisture transport, as well as on glacial Southern Ocean stratification and its implication for ... : Data submitted 2009-06-11; set to protected on request of first author (2014-08-13, PDI-8220). ... |
format |
Article in Journal/Newspaper |
author |
Abelmann, Andrea |
author_facet |
Abelmann, Andrea |
author_sort |
Abelmann, Andrea |
title |
Relative abundance and opal input of radiolarians measured on sediment core PS1768-8 and PS2498-1 ... |
title_short |
Relative abundance and opal input of radiolarians measured on sediment core PS1768-8 and PS2498-1 ... |
title_full |
Relative abundance and opal input of radiolarians measured on sediment core PS1768-8 and PS2498-1 ... |
title_fullStr |
Relative abundance and opal input of radiolarians measured on sediment core PS1768-8 and PS2498-1 ... |
title_full_unstemmed |
Relative abundance and opal input of radiolarians measured on sediment core PS1768-8 and PS2498-1 ... |
title_sort |
relative abundance and opal input of radiolarians measured on sediment core ps1768-8 and ps2498-1 ... |
publisher |
PANGAEA |
publishDate |
2009 |
url |
https://dx.doi.org/10.1594/pangaea.719184 https://doi.pangaea.de/10.1594/PANGAEA.719184 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Sea ice Southern Ocean |
genre_facet |
Sea ice Southern Ocean |
op_relation |
https://dx.doi.org/10.1016/j.dsr.2008.12.019 |
op_rights |
Data access is restricted (moratorium, sensitive data, license constraints) Licensing unknown: Please contact principal investigator/authors to gain access and request licensing terms unknown |
op_doi |
https://doi.org/10.1594/pangaea.71918410.1016/j.dsr.2008.12.019 |
_version_ |
1795036985989005312 |