Unveiling the anatomy of Termination 3 using water and air isotopes in the Dome C ice core, East Antarctica
Each glacial –interglacialtransition of the Quaternary occurs in a differentorbitalcontext leading to various timing for thedeglaciationand sequence of high vs low latitudes events. Termination 3, 250 kyears before present (ka), is an unusual deglaciation in the context of the last 9 deglaciations r...
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Online Access: | http://hdl.handle.net/10278/3711754 https://doi.org/10.1016/j.quascirev.2019.03.025 |
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ftuniveneziairis:oai:iris.unive.it:10278/3711754 2024-04-14T08:01:14+00:00 Unveiling the anatomy of Termination 3 using water and air isotopes in the Dome C ice core, East Antarctica Bréant, Camille Landais, Amaëlle Orsi, Anaïs Martinerie, Patricia Extier, Thomas Prié, Frédéric Stenni, Barbara Jouzel, Jean Masson-Delmotte, Valérie Leuenberger, Markus Bréant, Camille Landais, Amaëlle Orsi, Anaï Martinerie, Patricia Extier, Thoma Prié, Frédéric Stenni, Barbara Jouzel, Jean Masson-Delmotte, Valérie Leuenberger, Markus 2019 http://hdl.handle.net/10278/3711754 https://doi.org/10.1016/j.quascirev.2019.03.025 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000466454300009 volume:211 firstpage:156 lastpage:165 numberofpages:10 journal:QUATERNARY SCIENCE REVIEWS http://hdl.handle.net/10278/3711754 doi:10.1016/j.quascirev.2019.03.025 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85063449429 info:eu-repo/semantics/openAccess Antarctic temperature Bipolar seesaw Deglaciation Firn densification model Heinrich like event Ice core Termination 3 Water and air isotope Settore GEO/08 - Geochimica e Vulcanologia info:eu-repo/semantics/article 2019 ftuniveneziairis https://doi.org/10.1016/j.quascirev.2019.03.025 2024-03-21T18:09:06Z Each glacial –interglacialtransition of the Quaternary occurs in a differentorbitalcontext leading to various timing for thedeglaciationand sequence of high vs low latitudes events. Termination 3, 250 kyears before present (ka), is an unusual deglaciation in the context of the last 9 deglaciations recorded in the old EPICA Dome C (EDC) Antarctic ice core: it exhibits a three-phase sequence, two warming phases separated by a small cooling, the last phase suggesting a particularly rapid temperature increase. We present here new high resolution δ15N anddeuteriumexcess (d-excess) data from the EDC ice core to provide a detailed temperature change estimate during this termination. Then, we combined the δD and δ18O to discuss the relationship betweenhigh and low latitudechanges through the d-excess. We also provide the high vs low latitude sequence of events over this deglaciation without chronological uncertainty using low latitude ice core proxies. In agreement with previous studies based onspeleothemanalyses, we show that the first phase of Termination 3 (256–249 ka) is associated with small Heinrich like events linked to changes inITCZposition,monsoonactivity andteleconnectionswith Antarctica. In a context of minimumNorthern Hemisphereinsolation, this leads to a rather strong Antarctic warming, as observed in the δ15N record in contrast to the relatively small δD increase. The second warming phase occurs during the rise of the Northern hemisphere insolation, with a large Heinrich like event leading to the characteristic Antarctic warming observed in the δ15N and δD increase as for the more recent terminations. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica EPICA ice core Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) Antarctic East Antarctica Quaternary Science Reviews 211 156 165 |
institution |
Open Polar |
collection |
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) |
op_collection_id |
ftuniveneziairis |
language |
English |
topic |
Antarctic temperature Bipolar seesaw Deglaciation Firn densification model Heinrich like event Ice core Termination 3 Water and air isotope Settore GEO/08 - Geochimica e Vulcanologia |
spellingShingle |
Antarctic temperature Bipolar seesaw Deglaciation Firn densification model Heinrich like event Ice core Termination 3 Water and air isotope Settore GEO/08 - Geochimica e Vulcanologia Bréant, Camille Landais, Amaëlle Orsi, Anaïs Martinerie, Patricia Extier, Thomas Prié, Frédéric Stenni, Barbara Jouzel, Jean Masson-Delmotte, Valérie Leuenberger, Markus Unveiling the anatomy of Termination 3 using water and air isotopes in the Dome C ice core, East Antarctica |
topic_facet |
Antarctic temperature Bipolar seesaw Deglaciation Firn densification model Heinrich like event Ice core Termination 3 Water and air isotope Settore GEO/08 - Geochimica e Vulcanologia |
description |
Each glacial –interglacialtransition of the Quaternary occurs in a differentorbitalcontext leading to various timing for thedeglaciationand sequence of high vs low latitudes events. Termination 3, 250 kyears before present (ka), is an unusual deglaciation in the context of the last 9 deglaciations recorded in the old EPICA Dome C (EDC) Antarctic ice core: it exhibits a three-phase sequence, two warming phases separated by a small cooling, the last phase suggesting a particularly rapid temperature increase. We present here new high resolution δ15N anddeuteriumexcess (d-excess) data from the EDC ice core to provide a detailed temperature change estimate during this termination. Then, we combined the δD and δ18O to discuss the relationship betweenhigh and low latitudechanges through the d-excess. We also provide the high vs low latitude sequence of events over this deglaciation without chronological uncertainty using low latitude ice core proxies. In agreement with previous studies based onspeleothemanalyses, we show that the first phase of Termination 3 (256–249 ka) is associated with small Heinrich like events linked to changes inITCZposition,monsoonactivity andteleconnectionswith Antarctica. In a context of minimumNorthern Hemisphereinsolation, this leads to a rather strong Antarctic warming, as observed in the δ15N record in contrast to the relatively small δD increase. The second warming phase occurs during the rise of the Northern hemisphere insolation, with a large Heinrich like event leading to the characteristic Antarctic warming observed in the δ15N and δD increase as for the more recent terminations. |
author2 |
Bréant, Camille Landais, Amaëlle Orsi, Anaï Martinerie, Patricia Extier, Thoma Prié, Frédéric Stenni, Barbara Jouzel, Jean Masson-Delmotte, Valérie Leuenberger, Markus |
format |
Article in Journal/Newspaper |
author |
Bréant, Camille Landais, Amaëlle Orsi, Anaïs Martinerie, Patricia Extier, Thomas Prié, Frédéric Stenni, Barbara Jouzel, Jean Masson-Delmotte, Valérie Leuenberger, Markus |
author_facet |
Bréant, Camille Landais, Amaëlle Orsi, Anaïs Martinerie, Patricia Extier, Thomas Prié, Frédéric Stenni, Barbara Jouzel, Jean Masson-Delmotte, Valérie Leuenberger, Markus |
author_sort |
Bréant, Camille |
title |
Unveiling the anatomy of Termination 3 using water and air isotopes in the Dome C ice core, East Antarctica |
title_short |
Unveiling the anatomy of Termination 3 using water and air isotopes in the Dome C ice core, East Antarctica |
title_full |
Unveiling the anatomy of Termination 3 using water and air isotopes in the Dome C ice core, East Antarctica |
title_fullStr |
Unveiling the anatomy of Termination 3 using water and air isotopes in the Dome C ice core, East Antarctica |
title_full_unstemmed |
Unveiling the anatomy of Termination 3 using water and air isotopes in the Dome C ice core, East Antarctica |
title_sort |
unveiling the anatomy of termination 3 using water and air isotopes in the dome c ice core, east antarctica |
publishDate |
2019 |
url |
http://hdl.handle.net/10278/3711754 https://doi.org/10.1016/j.quascirev.2019.03.025 |
geographic |
Antarctic East Antarctica |
geographic_facet |
Antarctic East Antarctica |
genre |
Antarc* Antarctic Antarctica East Antarctica EPICA ice core |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica EPICA ice core |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000466454300009 volume:211 firstpage:156 lastpage:165 numberofpages:10 journal:QUATERNARY SCIENCE REVIEWS http://hdl.handle.net/10278/3711754 doi:10.1016/j.quascirev.2019.03.025 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85063449429 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2019.03.025 |
container_title |
Quaternary Science Reviews |
container_volume |
211 |
container_start_page |
156 |
op_container_end_page |
165 |
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1796308021250359296 |