Retracted: Southward migrations of the Atlantic Equatorial Currents during the Younger Dryas
Abstract Previous studies suggested that a weakened Gulf Stream may have contributed to the Younger Dryas (YD) cold event, however the physical mechanism of the Gulf Stream weakening is unclear. Here, we utilize paired Mg/Ca and δ 18 O measurements of planktonic foraminifera from the northerly and s...
Published in: | Limnology and Oceanography |
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crwiley:10.1002/lno.10529 2024-06-02T08:13:26+00:00 Retracted: Southward migrations of the Atlantic Equatorial Currents during the Younger Dryas Zou, Youjia Xi, Xiangying Zhang, Chaoyang 2017 http://dx.doi.org/10.1002/lno.10529 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Flno.10529 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.10529 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.10529 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.10529 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Limnology and Oceanography volume 62, issue 4, page 1732-1741 ISSN 0024-3590 1939-5590 journal-article 2017 crwiley https://doi.org/10.1002/lno.10529 2024-05-03T10:59:11Z Abstract Previous studies suggested that a weakened Gulf Stream may have contributed to the Younger Dryas (YD) cold event, however the physical mechanism of the Gulf Stream weakening is unclear. Here, we utilize paired Mg/Ca and δ 18 O measurements of planktonic foraminifera from the northerly and southerly marine sediments in the middle Atlantic Ocean to reconstruct past changes in tropical surface ocean temperature and salinity over the past 14 ka. We demonstrate that during the YD the sea surface temperature (SST) at the northerly core (0°16′S) was up to 2.1–2.7°C cooler whereas the SST at the southerly core (14°53′S) was up to 0.8–1.6°C warmer than modern temperatures. The δ 18 O, salinity values, accumulation rates, and other hydrological elements at the northerly core all exhibit opposite patterns with those at the southerly core. The antiphased variations of the paleohydrological elements at the northerly and southerly cores suggest that the Atlantic Equatorial Currents shifted southward significantly from its present‐day position during the YD, possibly resulting in a decrease of the Gulf Stream, in turn a cool Northern Hemisphere. Article in Journal/Newspaper Planktonic foraminifera Wiley Online Library Limnology and Oceanography 62 4 1732 1741 |
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crwiley |
language |
English |
description |
Abstract Previous studies suggested that a weakened Gulf Stream may have contributed to the Younger Dryas (YD) cold event, however the physical mechanism of the Gulf Stream weakening is unclear. Here, we utilize paired Mg/Ca and δ 18 O measurements of planktonic foraminifera from the northerly and southerly marine sediments in the middle Atlantic Ocean to reconstruct past changes in tropical surface ocean temperature and salinity over the past 14 ka. We demonstrate that during the YD the sea surface temperature (SST) at the northerly core (0°16′S) was up to 2.1–2.7°C cooler whereas the SST at the southerly core (14°53′S) was up to 0.8–1.6°C warmer than modern temperatures. The δ 18 O, salinity values, accumulation rates, and other hydrological elements at the northerly core all exhibit opposite patterns with those at the southerly core. The antiphased variations of the paleohydrological elements at the northerly and southerly cores suggest that the Atlantic Equatorial Currents shifted southward significantly from its present‐day position during the YD, possibly resulting in a decrease of the Gulf Stream, in turn a cool Northern Hemisphere. |
format |
Article in Journal/Newspaper |
author |
Zou, Youjia Xi, Xiangying Zhang, Chaoyang |
spellingShingle |
Zou, Youjia Xi, Xiangying Zhang, Chaoyang Retracted: Southward migrations of the Atlantic Equatorial Currents during the Younger Dryas |
author_facet |
Zou, Youjia Xi, Xiangying Zhang, Chaoyang |
author_sort |
Zou, Youjia |
title |
Retracted: Southward migrations of the Atlantic Equatorial Currents during the Younger Dryas |
title_short |
Retracted: Southward migrations of the Atlantic Equatorial Currents during the Younger Dryas |
title_full |
Retracted: Southward migrations of the Atlantic Equatorial Currents during the Younger Dryas |
title_fullStr |
Retracted: Southward migrations of the Atlantic Equatorial Currents during the Younger Dryas |
title_full_unstemmed |
Retracted: Southward migrations of the Atlantic Equatorial Currents during the Younger Dryas |
title_sort |
retracted: southward migrations of the atlantic equatorial currents during the younger dryas |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1002/lno.10529 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Flno.10529 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.10529 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.10529 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.10529 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Limnology and Oceanography volume 62, issue 4, page 1732-1741 ISSN 0024-3590 1939-5590 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/lno.10529 |
container_title |
Limnology and Oceanography |
container_volume |
62 |
container_issue |
4 |
container_start_page |
1732 |
op_container_end_page |
1741 |
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1800736931432103936 |