Ocean surface and bottom water conditions, iceberg drift and sediment transport on the North Iceland margin during MIS 3 and MIS 2
International audience Radiocarbon dates and marine tephra suggest that the upper 10 m of core MD99-2274 off North Iceland extends from ∼0 to ∼65 ka BP. A multi-proxy sediment and biomarker study at a ∼0.5 ky resolution is used to derive a paleoclimate scenario for this area of the southwestern Nord...
Published in: | Quaternary Science Reviews |
---|---|
Main Authors: | , , , , |
Other Authors: | , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2021
|
Subjects: | |
Online Access: | https://hal.archives-ouvertes.fr/hal-03261627 https://doi.org/10.1016/j.quascirev.2020.106722 |
id |
ftccsdartic:oai:HAL:hal-03261627v1 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Iceland Plateau MIS 2 and 3 Sea ice biomarkers IP 25 Alkenones [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
spellingShingle |
Iceland Plateau MIS 2 and 3 Sea ice biomarkers IP 25 Alkenones [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology Andrews, J.T. Smik, L. Belt, S.T. Sicre, Marie-Alexandrine McCave, I.N. Ocean surface and bottom water conditions, iceberg drift and sediment transport on the North Iceland margin during MIS 3 and MIS 2 |
topic_facet |
Iceland Plateau MIS 2 and 3 Sea ice biomarkers IP 25 Alkenones [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
description |
International audience Radiocarbon dates and marine tephra suggest that the upper 10 m of core MD99-2274 off North Iceland extends from ∼0 to ∼65 ka BP. A multi-proxy sediment and biomarker study at a ∼0.5 ky resolution is used to derive a paleoclimate scenario for this area of the southwestern Nordic Seas, which during the Holocene had intermittent excursions of icebergs and a seasonal cover of drifting sea ice across the site. The sortable silt mean size (S̅S̅) suggests a bottom current (1000 m depth) flow speed maximum to minimum range of ∼8 cm/s during Marine Isotope Stages 2–3, but the data are unreliable for the Holocene. Slow-down in flow speeds may be associated with massive ice and water discharges linked to the Hudson Strait ice stream (H-events) and to melt of icebergs from Greenland in the Nordic seas where convection would have been suppressed. Five pulses of sediment with a distinct felsic component are associated with iceberg transport from E/NE Greenland. Sea ice, open water and sea surface temperature (SST) biomarker proxies (i.e. IP25, HBI III, brassicasterol and alkenones) all point towards near-perennial sea ice cover during MIS 3 and 2, rather than seasonal sea ice or open water conditions. Indeed, our biomarker and sediment data require that the seas north of Iceland experienced a nearly continuous cover of sea ice, together with icebergs calved from ice stream termini, which drifted southward. The cross-correlation of the quartz % records between MD99-2274 and the well-dated core PS2644 in Blosseville Basin indicates significant coherence in the records at a multi-millennial (∼8 ky) timescale. A transition to open ocean conditions is evident from the early Holocene onwards, albeit with the occurrence of some drift ice and icebergs. |
author2 |
Institute of Arctic and Alpine Research (INSTAAR) University of Colorado Boulder Bristol Biogeochemistry Research Centre School of Earth Sciences Bristol University of Bristol Bristol -University of Bristol Bristol Variabilité de l'Océan et de la Glace de mer (VOG) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Sorbonne Université (SU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Sorbonne Université (SU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP) Godwin Laboratory for Palaeoclimate Research Department of Earth Sciences Cambridge, UK University of Cambridge UK (CAM)-University of Cambridge UK (CAM) |
format |
Article in Journal/Newspaper |
author |
Andrews, J.T. Smik, L. Belt, S.T. Sicre, Marie-Alexandrine McCave, I.N. |
author_facet |
Andrews, J.T. Smik, L. Belt, S.T. Sicre, Marie-Alexandrine McCave, I.N. |
author_sort |
Andrews, J.T. |
title |
Ocean surface and bottom water conditions, iceberg drift and sediment transport on the North Iceland margin during MIS 3 and MIS 2 |
title_short |
Ocean surface and bottom water conditions, iceberg drift and sediment transport on the North Iceland margin during MIS 3 and MIS 2 |
title_full |
Ocean surface and bottom water conditions, iceberg drift and sediment transport on the North Iceland margin during MIS 3 and MIS 2 |
title_fullStr |
Ocean surface and bottom water conditions, iceberg drift and sediment transport on the North Iceland margin during MIS 3 and MIS 2 |
title_full_unstemmed |
Ocean surface and bottom water conditions, iceberg drift and sediment transport on the North Iceland margin during MIS 3 and MIS 2 |
title_sort |
ocean surface and bottom water conditions, iceberg drift and sediment transport on the north iceland margin during mis 3 and mis 2 |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.archives-ouvertes.fr/hal-03261627 https://doi.org/10.1016/j.quascirev.2020.106722 |
long_lat |
ENVELOPE(-70.000,-70.000,62.000,62.000) ENVELOPE(-12.000,-12.000,69.500,69.500) |
geographic |
Greenland Hudson Hudson Strait Iceland Plateau |
geographic_facet |
Greenland Hudson Hudson Strait Iceland Plateau |
genre |
Greenland Greenland Sea Hudson Strait Iceland Nordic Seas Sea ice |
genre_facet |
Greenland Greenland Sea Hudson Strait Iceland Nordic Seas Sea ice |
op_source |
ISSN: 0277-3791 Quaternary Science Reviews https://hal.archives-ouvertes.fr/hal-03261627 Quaternary Science Reviews, Elsevier, 2021, 252, pp.106722. ⟨10.1016/j.quascirev.2020.106722⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2020.106722 hal-03261627 https://hal.archives-ouvertes.fr/hal-03261627 doi:10.1016/j.quascirev.2020.106722 |
op_doi |
https://doi.org/10.1016/j.quascirev.2020.106722 |
container_title |
Quaternary Science Reviews |
container_volume |
252 |
container_start_page |
106722 |
_version_ |
1766018639232761856 |
spelling |
ftccsdartic:oai:HAL:hal-03261627v1 2023-05-15T16:28:57+02:00 Ocean surface and bottom water conditions, iceberg drift and sediment transport on the North Iceland margin during MIS 3 and MIS 2 Andrews, J.T. Smik, L. Belt, S.T. Sicre, Marie-Alexandrine McCave, I.N. Institute of Arctic and Alpine Research (INSTAAR) University of Colorado Boulder Bristol Biogeochemistry Research Centre School of Earth Sciences Bristol University of Bristol Bristol -University of Bristol Bristol Variabilité de l'Océan et de la Glace de mer (VOG) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Sorbonne Université (SU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Sorbonne Université (SU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP) Godwin Laboratory for Palaeoclimate Research Department of Earth Sciences Cambridge, UK University of Cambridge UK (CAM)-University of Cambridge UK (CAM) 2021-01 https://hal.archives-ouvertes.fr/hal-03261627 https://doi.org/10.1016/j.quascirev.2020.106722 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2020.106722 hal-03261627 https://hal.archives-ouvertes.fr/hal-03261627 doi:10.1016/j.quascirev.2020.106722 ISSN: 0277-3791 Quaternary Science Reviews https://hal.archives-ouvertes.fr/hal-03261627 Quaternary Science Reviews, Elsevier, 2021, 252, pp.106722. ⟨10.1016/j.quascirev.2020.106722⟩ Iceland Plateau MIS 2 and 3 Sea ice biomarkers IP 25 Alkenones [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology info:eu-repo/semantics/article Journal articles 2021 ftccsdartic https://doi.org/10.1016/j.quascirev.2020.106722 2021-07-17T22:29:05Z International audience Radiocarbon dates and marine tephra suggest that the upper 10 m of core MD99-2274 off North Iceland extends from ∼0 to ∼65 ka BP. A multi-proxy sediment and biomarker study at a ∼0.5 ky resolution is used to derive a paleoclimate scenario for this area of the southwestern Nordic Seas, which during the Holocene had intermittent excursions of icebergs and a seasonal cover of drifting sea ice across the site. The sortable silt mean size (S̅S̅) suggests a bottom current (1000 m depth) flow speed maximum to minimum range of ∼8 cm/s during Marine Isotope Stages 2–3, but the data are unreliable for the Holocene. Slow-down in flow speeds may be associated with massive ice and water discharges linked to the Hudson Strait ice stream (H-events) and to melt of icebergs from Greenland in the Nordic seas where convection would have been suppressed. Five pulses of sediment with a distinct felsic component are associated with iceberg transport from E/NE Greenland. Sea ice, open water and sea surface temperature (SST) biomarker proxies (i.e. IP25, HBI III, brassicasterol and alkenones) all point towards near-perennial sea ice cover during MIS 3 and 2, rather than seasonal sea ice or open water conditions. Indeed, our biomarker and sediment data require that the seas north of Iceland experienced a nearly continuous cover of sea ice, together with icebergs calved from ice stream termini, which drifted southward. The cross-correlation of the quartz % records between MD99-2274 and the well-dated core PS2644 in Blosseville Basin indicates significant coherence in the records at a multi-millennial (∼8 ky) timescale. A transition to open ocean conditions is evident from the early Holocene onwards, albeit with the occurrence of some drift ice and icebergs. Article in Journal/Newspaper Greenland Greenland Sea Hudson Strait Iceland Nordic Seas Sea ice Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Greenland Hudson Hudson Strait ENVELOPE(-70.000,-70.000,62.000,62.000) Iceland Plateau ENVELOPE(-12.000,-12.000,69.500,69.500) Quaternary Science Reviews 252 106722 |