Sea-surface hydrographical conditions off South Faeroes and within the North-Eastern North Atlantic through MIS 2: the response of dinocysts
International audience The last glacial period, showing the progressive development of large boreal ice sheets, was punctuated by large climatic excursions. These excursions were triggered mainly by atmosphere-ocean-ice coupled dynamics and are thus exemplary case studies of natural climate variabil...
Published in: | Journal of Quaternary Science |
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Main Authors: | , , , , , , , |
Other Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2013
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Online Access: | https://doi.org/10.1002/jqs.2601 https://hal-insu.archives-ouvertes.fr/insu-00798011 |
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fttriple:oai:gotriple.eu:10670/1.uyqeig |
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openpolar |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
dinoflagellate cysts European ice sheets Faeroe Margin Last Glacial Maximum sea-surface parameters geo envir |
spellingShingle |
dinoflagellate cysts European ice sheets Faeroe Margin Last Glacial Maximum sea-surface parameters geo envir Caulle, Clémence Pénaud, Aurélie Eynaud, Frédérique Zaragosi, Sébastien Roche, Didier Michel, Elizabeth Boulay, Sébastien Richter, Thomas Sea-surface hydrographical conditions off South Faeroes and within the North-Eastern North Atlantic through MIS 2: the response of dinocysts |
topic_facet |
dinoflagellate cysts European ice sheets Faeroe Margin Last Glacial Maximum sea-surface parameters geo envir |
description |
International audience The last glacial period, showing the progressive development of large boreal ice sheets, was punctuated by large climatic excursions. These excursions were triggered mainly by atmosphere-ocean-ice coupled dynamics and are thus exemplary case studies of natural climate variability. To characterize the sea-surface palaeohydrographical changes accompanying these oscillations along the European margin, we have integrated new palynological data (dinocysts) acquired on core MD99-2281 (60°N, Faeroe Margin) during Marine Isotope Stage 2 in a latitudinal transect including published cores MD95-2002 (47°N, Celtic Margin) and MD95-2010 (66°N, Vöring Plateau). This transect is superimposed on the modern North Atlantic Drift pathway, but also at the outskirts of glacial European ice sheets, thus ideally located to track sea-ice extent and ice-sheet instabilities through time. The results show a coherent and sensitive response of sea-surface environments to the complex chain of abrupt events that punctuated the end of the last glacial period. The Last Glacial Maximum was marked by large seasonal contrasts of temperatures, whereas Heinrich events (HE) were characterized by a sharp cooling and sea-ice development. A tripartite structure is identified within HE1, with indices of melting at 19k cal a BP, followed by a temperate phase synchronous of a relative stability of ice sheets, and a terminal phase (17.5-15k cal a BP) characteristic of the 'conventional Laurentian' HE1. |
author2 |
Domaines Océaniques (LDO) Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Observatoire des Sciences de l'Univers-Institut d'écologie et environnement-Centre National de la Recherche Scientifique (CNRS) Environnements et Paléoenvironnements OCéaniques (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) Vrije Universiteit Amsterdam Amsterdam (VU) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Modélisation du climat (CLIM) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Paléocéanographie (PALEOCEAN) Royal Netherlands Institute for Sea Research (NIOZ) European Project: 243908,EC:FP7:ENV,FP7-ENV-2009-1,PAST4FUTURE(2010) |
format |
Article in Journal/Newspaper |
author |
Caulle, Clémence Pénaud, Aurélie Eynaud, Frédérique Zaragosi, Sébastien Roche, Didier Michel, Elizabeth Boulay, Sébastien Richter, Thomas |
author_facet |
Caulle, Clémence Pénaud, Aurélie Eynaud, Frédérique Zaragosi, Sébastien Roche, Didier Michel, Elizabeth Boulay, Sébastien Richter, Thomas |
author_sort |
Caulle, Clémence |
title |
Sea-surface hydrographical conditions off South Faeroes and within the North-Eastern North Atlantic through MIS 2: the response of dinocysts |
title_short |
Sea-surface hydrographical conditions off South Faeroes and within the North-Eastern North Atlantic through MIS 2: the response of dinocysts |
title_full |
Sea-surface hydrographical conditions off South Faeroes and within the North-Eastern North Atlantic through MIS 2: the response of dinocysts |
title_fullStr |
Sea-surface hydrographical conditions off South Faeroes and within the North-Eastern North Atlantic through MIS 2: the response of dinocysts |
title_full_unstemmed |
Sea-surface hydrographical conditions off South Faeroes and within the North-Eastern North Atlantic through MIS 2: the response of dinocysts |
title_sort |
sea-surface hydrographical conditions off south faeroes and within the north-eastern north atlantic through mis 2: the response of dinocysts |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://doi.org/10.1002/jqs.2601 https://hal-insu.archives-ouvertes.fr/insu-00798011 |
long_lat |
ENVELOPE(3.250,3.250,67.333,67.333) |
geographic |
Vöring Plateau |
geographic_facet |
Vöring Plateau |
genre |
Ice Sheet North Atlantic Sea ice |
genre_facet |
Ice Sheet North Atlantic Sea ice |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0267-8179 EISSN: 1099-1417 Journal of Quaternary Science Journal of Quaternary Science, Wiley, 2013, 28 (3), pp.217-228. ⟨10.1002/jqs.2601⟩ |
op_relation |
insu-00798011 doi:10.1002/jqs.2601 10670/1.uyqeig https://hal-insu.archives-ouvertes.fr/insu-00798011 |
op_rights |
undefined |
op_doi |
https://doi.org/10.1002/jqs.2601 |
container_title |
Journal of Quaternary Science |
container_volume |
28 |
container_issue |
3 |
container_start_page |
217 |
op_container_end_page |
228 |
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1766031672192532480 |
spelling |
fttriple:oai:gotriple.eu:10670/1.uyqeig 2023-05-15T16:41:14+02:00 Sea-surface hydrographical conditions off South Faeroes and within the North-Eastern North Atlantic through MIS 2: the response of dinocysts Caulle, Clémence Pénaud, Aurélie Eynaud, Frédérique Zaragosi, Sébastien Roche, Didier Michel, Elizabeth Boulay, Sébastien Richter, Thomas Domaines Océaniques (LDO) Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Observatoire des Sciences de l'Univers-Institut d'écologie et environnement-Centre National de la Recherche Scientifique (CNRS) Environnements et Paléoenvironnements OCéaniques (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) Vrije Universiteit Amsterdam Amsterdam (VU) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Modélisation du climat (CLIM) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Paléocéanographie (PALEOCEAN) Royal Netherlands Institute for Sea Research (NIOZ) European Project: 243908,EC:FP7:ENV,FP7-ENV-2009-1,PAST4FUTURE(2010) 2013-04-11 https://doi.org/10.1002/jqs.2601 https://hal-insu.archives-ouvertes.fr/insu-00798011 en eng HAL CCSD Wiley insu-00798011 doi:10.1002/jqs.2601 10670/1.uyqeig https://hal-insu.archives-ouvertes.fr/insu-00798011 undefined Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0267-8179 EISSN: 1099-1417 Journal of Quaternary Science Journal of Quaternary Science, Wiley, 2013, 28 (3), pp.217-228. ⟨10.1002/jqs.2601⟩ dinoflagellate cysts European ice sheets Faeroe Margin Last Glacial Maximum sea-surface parameters geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2013 fttriple https://doi.org/10.1002/jqs.2601 2023-01-22T16:40:46Z International audience The last glacial period, showing the progressive development of large boreal ice sheets, was punctuated by large climatic excursions. These excursions were triggered mainly by atmosphere-ocean-ice coupled dynamics and are thus exemplary case studies of natural climate variability. To characterize the sea-surface palaeohydrographical changes accompanying these oscillations along the European margin, we have integrated new palynological data (dinocysts) acquired on core MD99-2281 (60°N, Faeroe Margin) during Marine Isotope Stage 2 in a latitudinal transect including published cores MD95-2002 (47°N, Celtic Margin) and MD95-2010 (66°N, Vöring Plateau). This transect is superimposed on the modern North Atlantic Drift pathway, but also at the outskirts of glacial European ice sheets, thus ideally located to track sea-ice extent and ice-sheet instabilities through time. The results show a coherent and sensitive response of sea-surface environments to the complex chain of abrupt events that punctuated the end of the last glacial period. The Last Glacial Maximum was marked by large seasonal contrasts of temperatures, whereas Heinrich events (HE) were characterized by a sharp cooling and sea-ice development. A tripartite structure is identified within HE1, with indices of melting at 19k cal a BP, followed by a temperate phase synchronous of a relative stability of ice sheets, and a terminal phase (17.5-15k cal a BP) characteristic of the 'conventional Laurentian' HE1. Article in Journal/Newspaper Ice Sheet North Atlantic Sea ice Unknown Vöring Plateau ENVELOPE(3.250,3.250,67.333,67.333) Journal of Quaternary Science 28 3 217 228 |