Impact of iceberg melting on Mediterranean thermohaline circulation during Heinrich events
Down-core samples of planktonic and benthic foraminifera were analyzed for oxygen and carbon isotopes in International Marine Past Global Changes Study (IMAGES) core MD99-2343 in order to study the interactions between climate change in the Northern Hemisphere and the western Mediterranean thermohal...
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Online Access: | https://archimer.ifremer.fr/doc/00232/34354/32759.pdf https://doi.org/10.1029/2004PA001051 https://archimer.ifremer.fr/doc/00232/34354/ |
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ftarchimer:oai:archimer.ifremer.fr:34354 2023-05-15T17:25:24+02:00 Impact of iceberg melting on Mediterranean thermohaline circulation during Heinrich events Sierro, Fj Hodell, Da Curtis, Jh Flores, Ja Reguera, I Colmenero-hidalgo, E Barcena, Ma Grimalt, Jo Cacho, I Frigola, J Canals, M 2005-06 application/pdf https://archimer.ifremer.fr/doc/00232/34354/32759.pdf https://doi.org/10.1029/2004PA001051 https://archimer.ifremer.fr/doc/00232/34354/ eng eng Amer Geophysical Union https://archimer.ifremer.fr/doc/00232/34354/32759.pdf doi:10.1029/2004PA001051 https://archimer.ifremer.fr/doc/00232/34354/ Copyright 2005 by the American Geophysical Union. info:eu-repo/semantics/openAccess restricted use Paleoceanography (0883-8305) (Amer Geophysical Union), 2005-06 , Vol. 20 , N. PA2019 , P. 1-13 climatic change Heinrich events Mediterranean Sea carbon and oxygen isotopes thermohaline circulation Pleistocene text Publication info:eu-repo/semantics/article 2005 ftarchimer https://doi.org/10.1029/2004PA001051 2021-09-23T20:25:21Z Down-core samples of planktonic and benthic foraminifera were analyzed for oxygen and carbon isotopes in International Marine Past Global Changes Study (IMAGES) core MD99-2343 in order to study the interactions between climate change in the Northern Hemisphere and the western Mediterranean thermohaline circulation at times of Heinrich events (HE). Our results confirm the antiphase correlation between enhanced North Atlantic Deep Water formation and low ventilation in the Mediterranean. However, this study reveals that this antiphase relationship in deepwater formation between the North Atlantic and Mediterranean was interrupted during times of HE when the injection of large volumes of water from melting icebergs reached the entrance to the Mediterranean. These events, which lasted less than 1000 years, are represented by pronounced decreases in both planktonic delta(18)O and benthic delta(13)C signals. Lower salinities of Mediterranean surface water resulted in a slowdown of western Mediterranean deepwater overturn even though cold sea surface temperatures and drier climate should have resulted in enhanced deepwater formation. Article in Journal/Newspaper North Atlantic Deep Water North Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Paleoceanography 20 2 n/a n/a |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
climatic change Heinrich events Mediterranean Sea carbon and oxygen isotopes thermohaline circulation Pleistocene |
spellingShingle |
climatic change Heinrich events Mediterranean Sea carbon and oxygen isotopes thermohaline circulation Pleistocene Sierro, Fj Hodell, Da Curtis, Jh Flores, Ja Reguera, I Colmenero-hidalgo, E Barcena, Ma Grimalt, Jo Cacho, I Frigola, J Canals, M Impact of iceberg melting on Mediterranean thermohaline circulation during Heinrich events |
topic_facet |
climatic change Heinrich events Mediterranean Sea carbon and oxygen isotopes thermohaline circulation Pleistocene |
description |
Down-core samples of planktonic and benthic foraminifera were analyzed for oxygen and carbon isotopes in International Marine Past Global Changes Study (IMAGES) core MD99-2343 in order to study the interactions between climate change in the Northern Hemisphere and the western Mediterranean thermohaline circulation at times of Heinrich events (HE). Our results confirm the antiphase correlation between enhanced North Atlantic Deep Water formation and low ventilation in the Mediterranean. However, this study reveals that this antiphase relationship in deepwater formation between the North Atlantic and Mediterranean was interrupted during times of HE when the injection of large volumes of water from melting icebergs reached the entrance to the Mediterranean. These events, which lasted less than 1000 years, are represented by pronounced decreases in both planktonic delta(18)O and benthic delta(13)C signals. Lower salinities of Mediterranean surface water resulted in a slowdown of western Mediterranean deepwater overturn even though cold sea surface temperatures and drier climate should have resulted in enhanced deepwater formation. |
format |
Article in Journal/Newspaper |
author |
Sierro, Fj Hodell, Da Curtis, Jh Flores, Ja Reguera, I Colmenero-hidalgo, E Barcena, Ma Grimalt, Jo Cacho, I Frigola, J Canals, M |
author_facet |
Sierro, Fj Hodell, Da Curtis, Jh Flores, Ja Reguera, I Colmenero-hidalgo, E Barcena, Ma Grimalt, Jo Cacho, I Frigola, J Canals, M |
author_sort |
Sierro, Fj |
title |
Impact of iceberg melting on Mediterranean thermohaline circulation during Heinrich events |
title_short |
Impact of iceberg melting on Mediterranean thermohaline circulation during Heinrich events |
title_full |
Impact of iceberg melting on Mediterranean thermohaline circulation during Heinrich events |
title_fullStr |
Impact of iceberg melting on Mediterranean thermohaline circulation during Heinrich events |
title_full_unstemmed |
Impact of iceberg melting on Mediterranean thermohaline circulation during Heinrich events |
title_sort |
impact of iceberg melting on mediterranean thermohaline circulation during heinrich events |
publisher |
Amer Geophysical Union |
publishDate |
2005 |
url |
https://archimer.ifremer.fr/doc/00232/34354/32759.pdf https://doi.org/10.1029/2004PA001051 https://archimer.ifremer.fr/doc/00232/34354/ |
genre |
North Atlantic Deep Water North Atlantic |
genre_facet |
North Atlantic Deep Water North Atlantic |
op_source |
Paleoceanography (0883-8305) (Amer Geophysical Union), 2005-06 , Vol. 20 , N. PA2019 , P. 1-13 |
op_relation |
https://archimer.ifremer.fr/doc/00232/34354/32759.pdf doi:10.1029/2004PA001051 https://archimer.ifremer.fr/doc/00232/34354/ |
op_rights |
Copyright 2005 by the American Geophysical Union. info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1029/2004PA001051 |
container_title |
Paleoceanography |
container_volume |
20 |
container_issue |
2 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1766116828947415040 |