Intermediate- and Deep-Water Oxygenation History in the Subarctic NorthPacific During the Last Deglacial Period
National audience Deglacial dissolved oxygen concentrations were semiquantitatively estimated for intermediate and deep waters in the western Bering Sea using the benthic foraminiferal-based transfer function developed by Tetard et al. (2017), Tetard et al. (2021a). Benthic foraminiferal assemblages...
Published in: | Frontiers in Earth Science |
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Main Authors: | , , , , |
Other Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | French |
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HAL CCSD
2021
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Subjects: | |
Online Access: | https://hal.science/hal-03662618 https://hal.science/hal-03662618/document https://hal.science/hal-03662618/file/feart-09-638069.pdf https://doi.org/10.3389/feart.2021.638069 |
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ftinsu:oai:HAL:hal-03662618v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
French |
topic |
oxygen minimum zone ocean circulation sea-surface bioproductivity teleconnections transfer function benthic foraminifers North Pacific Southern Ocean [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
oxygen minimum zone ocean circulation sea-surface bioproductivity teleconnections transfer function benthic foraminifers North Pacific Southern Ocean [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Ovsepyan, Ekaterina Ivanova, Elena Tetard, Martin Max, Lars Tiedemann, Ralf Intermediate- and Deep-Water Oxygenation History in the Subarctic NorthPacific During the Last Deglacial Period |
topic_facet |
oxygen minimum zone ocean circulation sea-surface bioproductivity teleconnections transfer function benthic foraminifers North Pacific Southern Ocean [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
National audience Deglacial dissolved oxygen concentrations were semiquantitatively estimated for intermediate and deep waters in the western Bering Sea using the benthic foraminiferal-based transfer function developed by Tetard et al. (2017), Tetard et al. (2021a). Benthic foraminiferal assemblages were analyzed from two sediment cores, SO201-2-85KL (963 m below sea level (mbsl), the intermediate-water core) and SO201-2-77KL (2,163 mbsl, the deep-water core), collected from the Shirshov Ridge in the western Bering Sea. Intermediate waters were characterized by an oxygen content of & SIM;2.0 ml L-1 or more during the Last Glacial Maximum (LGM)-Heinrich 1 (H1), around 0.15 ml L-1 during the middle Bolling/Allerod (B/A)-Early Holocene (EH), and a slight increase in [O-2] (& SIM;0.20 ml L-1) at the beginning of the Younger Dryas (YD) mbsl. Deep-water oxygen concentrations ranged from 0.9 to 2.5 ml L-1 during the LGM-H1, hovered around 0.08 ml L-1 at the onset of B/A, and were within the 0.30-0.85 ml L-1 range from the middle B/A to the first half of YD and the 1.0-1.7 ml L-1 range from the middle to late Holocene. The [O-2] variations remind the delta O-18 NGRIP record thereby providing evidence for a link between the Bering Sea oxygenation at intermediate depths and the deglacial North Atlantic climate. Changes in the deep-water oxygen concentrations mostly resemble the deglacial dynamics of the Southern Ocean upwelling intensity which is supposed to be closely coupled with the Antarctic climate variability. This coherence suggests that deglacial deep-water [O-2] variations were primarily controlled by changes in the circulation of southern-sourced waters. Nevertheless, the signal from the south at the deeper site might be amplified by the Northern Hemisphere climate warming via an increase in sea-surface bioproductivity during the B/A and EH. A semi-enclosed position of the Bering Sea and sea-level oscillations might significantly contribute to the magnitude of oxygenation changes in the study area ... |
author2 |
Russian Academy of Sciences Moscow (RAS) Laboratoire des signaux et systèmes (L2S) CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine (AWI) Helmholtz-Gemeinschaft = Helmholtz Association |
format |
Article in Journal/Newspaper |
author |
Ovsepyan, Ekaterina Ivanova, Elena Tetard, Martin Max, Lars Tiedemann, Ralf |
author_facet |
Ovsepyan, Ekaterina Ivanova, Elena Tetard, Martin Max, Lars Tiedemann, Ralf |
author_sort |
Ovsepyan, Ekaterina |
title |
Intermediate- and Deep-Water Oxygenation History in the Subarctic NorthPacific During the Last Deglacial Period |
title_short |
Intermediate- and Deep-Water Oxygenation History in the Subarctic NorthPacific During the Last Deglacial Period |
title_full |
Intermediate- and Deep-Water Oxygenation History in the Subarctic NorthPacific During the Last Deglacial Period |
title_fullStr |
Intermediate- and Deep-Water Oxygenation History in the Subarctic NorthPacific During the Last Deglacial Period |
title_full_unstemmed |
Intermediate- and Deep-Water Oxygenation History in the Subarctic NorthPacific During the Last Deglacial Period |
title_sort |
intermediate- and deep-water oxygenation history in the subarctic northpacific during the last deglacial period |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-03662618 https://hal.science/hal-03662618/document https://hal.science/hal-03662618/file/feart-09-638069.pdf https://doi.org/10.3389/feart.2021.638069 |
long_lat |
ENVELOPE(171.000,171.000,57.500,57.500) |
geographic |
Antarctic Bering Sea Pacific Shirshov Ridge Southern Ocean The Antarctic |
geographic_facet |
Antarctic Bering Sea Pacific Shirshov Ridge Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Bering Sea NGRIP North Atlantic Southern Ocean Subarctic |
genre_facet |
Antarc* Antarctic Bering Sea NGRIP North Atlantic Southern Ocean Subarctic |
op_source |
ISSN: 2296-6463 Frontiers in Earth Science https://hal.science/hal-03662618 Frontiers in Earth Science, 2021, 9, pp.638069. ⟨10.3389/feart.2021.638069⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3389/feart.2021.638069 hal-03662618 https://hal.science/hal-03662618 https://hal.science/hal-03662618/document https://hal.science/hal-03662618/file/feart-09-638069.pdf doi:10.3389/feart.2021.638069 WOS: 000724305000001 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3389/feart.2021.638069 |
container_title |
Frontiers in Earth Science |
container_volume |
9 |
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1796317820615655424 |
spelling |
ftinsu:oai:HAL:hal-03662618v1 2024-04-14T08:02:50+00:00 Intermediate- and Deep-Water Oxygenation History in the Subarctic NorthPacific During the Last Deglacial Period Ovsepyan, Ekaterina Ivanova, Elena Tetard, Martin Max, Lars Tiedemann, Ralf Russian Academy of Sciences Moscow (RAS) Laboratoire des signaux et systèmes (L2S) CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine (AWI) Helmholtz-Gemeinschaft = Helmholtz Association 2021 https://hal.science/hal-03662618 https://hal.science/hal-03662618/document https://hal.science/hal-03662618/file/feart-09-638069.pdf https://doi.org/10.3389/feart.2021.638069 fr fre HAL CCSD Frontiers Media info:eu-repo/semantics/altIdentifier/doi/10.3389/feart.2021.638069 hal-03662618 https://hal.science/hal-03662618 https://hal.science/hal-03662618/document https://hal.science/hal-03662618/file/feart-09-638069.pdf doi:10.3389/feart.2021.638069 WOS: 000724305000001 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 2296-6463 Frontiers in Earth Science https://hal.science/hal-03662618 Frontiers in Earth Science, 2021, 9, pp.638069. ⟨10.3389/feart.2021.638069⟩ oxygen minimum zone ocean circulation sea-surface bioproductivity teleconnections transfer function benthic foraminifers North Pacific Southern Ocean [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2021 ftinsu https://doi.org/10.3389/feart.2021.638069 2024-03-21T17:15:03Z National audience Deglacial dissolved oxygen concentrations were semiquantitatively estimated for intermediate and deep waters in the western Bering Sea using the benthic foraminiferal-based transfer function developed by Tetard et al. (2017), Tetard et al. (2021a). Benthic foraminiferal assemblages were analyzed from two sediment cores, SO201-2-85KL (963 m below sea level (mbsl), the intermediate-water core) and SO201-2-77KL (2,163 mbsl, the deep-water core), collected from the Shirshov Ridge in the western Bering Sea. Intermediate waters were characterized by an oxygen content of & SIM;2.0 ml L-1 or more during the Last Glacial Maximum (LGM)-Heinrich 1 (H1), around 0.15 ml L-1 during the middle Bolling/Allerod (B/A)-Early Holocene (EH), and a slight increase in [O-2] (& SIM;0.20 ml L-1) at the beginning of the Younger Dryas (YD) mbsl. Deep-water oxygen concentrations ranged from 0.9 to 2.5 ml L-1 during the LGM-H1, hovered around 0.08 ml L-1 at the onset of B/A, and were within the 0.30-0.85 ml L-1 range from the middle B/A to the first half of YD and the 1.0-1.7 ml L-1 range from the middle to late Holocene. The [O-2] variations remind the delta O-18 NGRIP record thereby providing evidence for a link between the Bering Sea oxygenation at intermediate depths and the deglacial North Atlantic climate. Changes in the deep-water oxygen concentrations mostly resemble the deglacial dynamics of the Southern Ocean upwelling intensity which is supposed to be closely coupled with the Antarctic climate variability. This coherence suggests that deglacial deep-water [O-2] variations were primarily controlled by changes in the circulation of southern-sourced waters. Nevertheless, the signal from the south at the deeper site might be amplified by the Northern Hemisphere climate warming via an increase in sea-surface bioproductivity during the B/A and EH. A semi-enclosed position of the Bering Sea and sea-level oscillations might significantly contribute to the magnitude of oxygenation changes in the study area ... Article in Journal/Newspaper Antarc* Antarctic Bering Sea NGRIP North Atlantic Southern Ocean Subarctic Institut national des sciences de l'Univers: HAL-INSU Antarctic Bering Sea Pacific Shirshov Ridge ENVELOPE(171.000,171.000,57.500,57.500) Southern Ocean The Antarctic Frontiers in Earth Science 9 |