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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Subjects: | |
Online Access: | https://insu.hal.science/insu-00798011 https://doi.org/10.1002/jqs.2601 |
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ftunivbrest:oai:HAL:insu-00798011v1 |
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openpolar |
institution |
Open Polar |
collection |
Université de Bretagne Occidentale: HAL |
op_collection_id |
ftunivbrest |
language |
English |
topic |
dinoflagellate cysts European ice sheets Faeroe Margin Last Glacial Maximum sea-surface parameters [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
spellingShingle |
dinoflagellate cysts European ice sheets Faeroe Margin Last Glacial Maximum sea-surface parameters [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology Caulle, Clémence Pénaud, Aurélie Eynaud, Frédérique Zaragosi, Sébastien Roche, Didier M. Michel, Elisabeth 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 [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
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 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-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) 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)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Modélisation du climat (CLIM) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-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)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) 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 M. Michel, Elisabeth Boulay, Sébastien Richter, Thomas |
author_facet |
Caulle, Clémence Pénaud, Aurélie Eynaud, Frédérique Zaragosi, Sébastien Roche, Didier M. Michel, Elisabeth 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://insu.hal.science/insu-00798011 https://doi.org/10.1002/jqs.2601 |
genre |
Ice Sheet North Atlantic Sea ice |
genre_facet |
Ice Sheet North Atlantic Sea ice |
op_source |
ISSN: 0267-8179 EISSN: 1099-1417 Journal of Quaternary Science https://insu.hal.science/insu-00798011 Journal of Quaternary Science, 2013, 28 (3), pp.217-228. ⟨10.1002/jqs.2601⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/jqs.2601 info:eu-repo/grantAgreement/EC/FP7/243908/EU/Climate change - Learning from the past climate/PAST4FUTURE insu-00798011 https://insu.hal.science/insu-00798011 doi:10.1002/jqs.2601 |
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 |
_version_ |
1799481879723769856 |
spelling |
ftunivbrest:oai:HAL:insu-00798011v1 2024-05-19T07:42:13+00:00 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 M. Michel, Elisabeth 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 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-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) 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)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Modélisation du climat (CLIM) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-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)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) 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://insu.hal.science/insu-00798011 https://doi.org/10.1002/jqs.2601 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1002/jqs.2601 info:eu-repo/grantAgreement/EC/FP7/243908/EU/Climate change - Learning from the past climate/PAST4FUTURE insu-00798011 https://insu.hal.science/insu-00798011 doi:10.1002/jqs.2601 ISSN: 0267-8179 EISSN: 1099-1417 Journal of Quaternary Science https://insu.hal.science/insu-00798011 Journal of Quaternary Science, 2013, 28 (3), pp.217-228. ⟨10.1002/jqs.2601⟩ dinoflagellate cysts European ice sheets Faeroe Margin Last Glacial Maximum sea-surface parameters [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology info:eu-repo/semantics/article Journal articles 2013 ftunivbrest https://doi.org/10.1002/jqs.2601 2024-04-25T16:51:15Z 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 Université de Bretagne Occidentale: HAL Journal of Quaternary Science 28 3 217 228 |