Deglacial intermediate water reorganization: new evidence from the Indian Ocean
The importance of intermediate water masses in climate change and ocean circulation has been emphasized recently. In particular, Southern Ocean Intermediate Waters (SOIW), such as Antarctic Intermediate Water and Subantarctic Mode Water, are thought to have acted as active interhemispheric transmitt...
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Copernicus Publications
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fttriple:oai:gotriple.eu:oai:doaj.org/article:cd1de08bee3649539bb39f8c3b962ffa 2023-05-15T13:43:15+02:00 Deglacial intermediate water reorganization: new evidence from the Indian Ocean S. Romahn A. Mackensen J. Groeneveld J. Pätzold 2014-02-01 https://doi.org/10.5194/cp-10-293-2014 http://www.clim-past.net/10/293/2014/cp-10-293-2014.pdf https://doaj.org/article/cd1de08bee3649539bb39f8c3b962ffa en eng Copernicus Publications 1814-9324 1814-9332 doi:10.5194/cp-10-293-2014 http://www.clim-past.net/10/293/2014/cp-10-293-2014.pdf https://doaj.org/article/cd1de08bee3649539bb39f8c3b962ffa undefined Climate of the Past, Vol 10, Iss 1, Pp 293-303 (2014) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2014 fttriple https://doi.org/10.5194/cp-10-293-2014 2023-01-22T19:11:46Z The importance of intermediate water masses in climate change and ocean circulation has been emphasized recently. In particular, Southern Ocean Intermediate Waters (SOIW), such as Antarctic Intermediate Water and Subantarctic Mode Water, are thought to have acted as active interhemispheric transmitter of climate anomalies. Here we reconstruct changes in SOIW signature and spatial and temporal evolution based on a 40 kyr time series of oxygen and carbon isotopes as well as planktic Mg/Ca based thermometry from Site GeoB12615-4 in the western Indian Ocean. Our data suggest that SOIW transmitted Antarctic temperature trends to the equatorial Indian Ocean via the "oceanic tunnel" mechanism. Moreover, our results reveal that deglacial SOIW carried a signature of aged Southern Ocean deep water. We find no evidence of increased formation of intermediate waters during the deglaciation. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Unknown Antarctic Indian Southern Ocean Climate of the Past 10 1 293 303 |
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geo envir |
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geo envir S. Romahn A. Mackensen J. Groeneveld J. Pätzold Deglacial intermediate water reorganization: new evidence from the Indian Ocean |
topic_facet |
geo envir |
description |
The importance of intermediate water masses in climate change and ocean circulation has been emphasized recently. In particular, Southern Ocean Intermediate Waters (SOIW), such as Antarctic Intermediate Water and Subantarctic Mode Water, are thought to have acted as active interhemispheric transmitter of climate anomalies. Here we reconstruct changes in SOIW signature and spatial and temporal evolution based on a 40 kyr time series of oxygen and carbon isotopes as well as planktic Mg/Ca based thermometry from Site GeoB12615-4 in the western Indian Ocean. Our data suggest that SOIW transmitted Antarctic temperature trends to the equatorial Indian Ocean via the "oceanic tunnel" mechanism. Moreover, our results reveal that deglacial SOIW carried a signature of aged Southern Ocean deep water. We find no evidence of increased formation of intermediate waters during the deglaciation. |
format |
Article in Journal/Newspaper |
author |
S. Romahn A. Mackensen J. Groeneveld J. Pätzold |
author_facet |
S. Romahn A. Mackensen J. Groeneveld J. Pätzold |
author_sort |
S. Romahn |
title |
Deglacial intermediate water reorganization: new evidence from the Indian Ocean |
title_short |
Deglacial intermediate water reorganization: new evidence from the Indian Ocean |
title_full |
Deglacial intermediate water reorganization: new evidence from the Indian Ocean |
title_fullStr |
Deglacial intermediate water reorganization: new evidence from the Indian Ocean |
title_full_unstemmed |
Deglacial intermediate water reorganization: new evidence from the Indian Ocean |
title_sort |
deglacial intermediate water reorganization: new evidence from the indian ocean |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/cp-10-293-2014 http://www.clim-past.net/10/293/2014/cp-10-293-2014.pdf https://doaj.org/article/cd1de08bee3649539bb39f8c3b962ffa |
geographic |
Antarctic Indian Southern Ocean |
geographic_facet |
Antarctic Indian Southern Ocean |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
Climate of the Past, Vol 10, Iss 1, Pp 293-303 (2014) |
op_relation |
1814-9324 1814-9332 doi:10.5194/cp-10-293-2014 http://www.clim-past.net/10/293/2014/cp-10-293-2014.pdf https://doaj.org/article/cd1de08bee3649539bb39f8c3b962ffa |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/cp-10-293-2014 |
container_title |
Climate of the Past |
container_volume |
10 |
container_issue |
1 |
container_start_page |
293 |
op_container_end_page |
303 |
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1766186296789696512 |