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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ftawi:oai:epic.awi.de:34869 2024-09-15T17:47:58+00:00 Deglacial intermediate water reorganization: new evidence from the Indian Ocean Romahn, Sarah Mackensen, Andreas Groeneveld, J. Pätzold, J. 2014-02-10 https://epic.awi.de/id/eprint/34869/ http://www.clim-past.net/10/293/2014/cp-10-293-2014.html https://hdl.handle.net/10013/epic.43011 unknown Romahn, S. , Mackensen, A. orcid:0000-0002-5024-4455 , Groeneveld, J. and Pätzold, J. (2014) Deglacial intermediate water reorganization: new evidence from the Indian Ocean , Climate of the Past, 10 (1), pp. 293-303 . doi:10.5194/cp-10-293-2014 <https://doi.org/10.5194/cp-10-293-2014> , hdl:10013/epic.43011 EPIC3Climate of the Past, 10(1), pp. 293-303, ISSN: 1814-9332 Article isiRev 2014 ftawi https://doi.org/10.5194/cp-10-293-2014 2024-06-24T04:08:32Z 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 Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Climate of the Past 10 1 293 303 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
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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 |
Romahn, Sarah Mackensen, Andreas Groeneveld, J. Pätzold, J. |
spellingShingle |
Romahn, Sarah Mackensen, Andreas Groeneveld, J. Pätzold, J. Deglacial intermediate water reorganization: new evidence from the Indian Ocean |
author_facet |
Romahn, Sarah Mackensen, Andreas Groeneveld, J. Pätzold, J. |
author_sort |
Romahn, Sarah |
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 |
publishDate |
2014 |
url |
https://epic.awi.de/id/eprint/34869/ http://www.clim-past.net/10/293/2014/cp-10-293-2014.html https://hdl.handle.net/10013/epic.43011 |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
EPIC3Climate of the Past, 10(1), pp. 293-303, ISSN: 1814-9332 |
op_relation |
Romahn, S. , Mackensen, A. orcid:0000-0002-5024-4455 , Groeneveld, J. and Pätzold, J. (2014) Deglacial intermediate water reorganization: new evidence from the Indian Ocean , Climate of the Past, 10 (1), pp. 293-303 . doi:10.5194/cp-10-293-2014 <https://doi.org/10.5194/cp-10-293-2014> , hdl:10013/epic.43011 |
op_doi |
https://doi.org/10.5194/cp-10-293-2014 |
container_title |
Climate of the Past |
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10 |
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1 |
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293 |
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303 |
_version_ |
1810497710660255744 |