Stable carbon and oxygen isotope record of Neogloboquadrina pachyderma and Cibicides lobatulus from the southwestern Greenland Sea
A core transect across the southwestern Greenland Sea reveals coeval events of extremely negative planktic and benthic delta13C excursions between 40 and 87 ka. The most pronounced event, event 1, began at peak Dansgaard-Oeschger stadial 22 (85 ka) with a duration of 18 k.y. During this episode, inc...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.738187 2024-09-30T14:34:18+00:00 Stable carbon and oxygen isotope record of Neogloboquadrina pachyderma and Cibicides lobatulus from the southwestern Greenland Sea Millo, Christian Sarnthein, Michael Erlenkeuser, Helmut Frederichs, Thomas MEDIAN LATITUDE: 67.890600 * MEDIAN LONGITUDE: -25.005750 * SOUTH-BOUND LATITUDE: 67.850300 * WEST-BOUND LONGITUDE: -25.426500 * NORTH-BOUND LATITUDE: 67.930900 * EAST-BOUND LONGITUDE: -24.585000 * DATE/TIME START: 2002-07-06T00:44:00 * DATE/TIME END: 2002-07-06T10:32:00 2005 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.738187 https://doi.org/10.1594/PANGAEA.738187 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.738187 https://doi.org/10.1594/PANGAEA.738187 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Millo, Christian; Sarnthein, Michael; Erlenkeuser, Helmut; Frederichs, Thomas (2005): Methane-driven late Pleistocene d13C minima and overflow reversals in the southwestern Greenland Sea. Geology, 33(11), 873-876, https://doi.org/10.1130/G21790.1 ARK-XVIII/1 GIK/IfG Iceland Sea Impact of Gateways on Ocean Circulation Climate and Evolution Institute for Geosciences Christian Albrechts University Kiel OceanGateways Ocean Gateways Oceanpassagen PC Piston corer Polarstern PS62 PS62/015-3 PS62/017-4 dataset publication series 2005 ftpangaea https://doi.org/10.1594/PANGAEA.73818710.1130/G21790.1 2024-09-18T00:10:44Z A core transect across the southwestern Greenland Sea reveals coeval events of extremely negative planktic and benthic delta13C excursions between 40 and 87 ka. The most pronounced event, event 1, began at peak Dansgaard-Oeschger stadial 22 (85 ka) with a duration of 18 k.y. During this episode, incursions of Atlantic Intermediate Water caused a bottom-water warming of up to 8 °C. The amplitude, timing, and geographic pattern of the delta13C events suggest that this bottom-water warming triggered clathrate instability along the East Greenland slope and a methane-induced depletion of delta13CDIC (DIC- dissolved inorganic carbon). Since delta13C event 1 matches a major peak in atmospheric CH4 concentration, this clathrate destabilization may have contributed to the rise in atmospheric CH4 and thus to climate warming over marine isotope stage 5.1. Other/Unknown Material East Greenland Greenland Greenland Sea Iceland Neogloboquadrina pachyderma PANGAEA - Data Publisher for Earth & Environmental Science Greenland ENVELOPE(-25.426500,-24.585000,67.930900,67.850300) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
ARK-XVIII/1 GIK/IfG Iceland Sea Impact of Gateways on Ocean Circulation Climate and Evolution Institute for Geosciences Christian Albrechts University Kiel OceanGateways Ocean Gateways Oceanpassagen PC Piston corer Polarstern PS62 PS62/015-3 PS62/017-4 |
spellingShingle |
ARK-XVIII/1 GIK/IfG Iceland Sea Impact of Gateways on Ocean Circulation Climate and Evolution Institute for Geosciences Christian Albrechts University Kiel OceanGateways Ocean Gateways Oceanpassagen PC Piston corer Polarstern PS62 PS62/015-3 PS62/017-4 Millo, Christian Sarnthein, Michael Erlenkeuser, Helmut Frederichs, Thomas Stable carbon and oxygen isotope record of Neogloboquadrina pachyderma and Cibicides lobatulus from the southwestern Greenland Sea |
topic_facet |
ARK-XVIII/1 GIK/IfG Iceland Sea Impact of Gateways on Ocean Circulation Climate and Evolution Institute for Geosciences Christian Albrechts University Kiel OceanGateways Ocean Gateways Oceanpassagen PC Piston corer Polarstern PS62 PS62/015-3 PS62/017-4 |
description |
A core transect across the southwestern Greenland Sea reveals coeval events of extremely negative planktic and benthic delta13C excursions between 40 and 87 ka. The most pronounced event, event 1, began at peak Dansgaard-Oeschger stadial 22 (85 ka) with a duration of 18 k.y. During this episode, incursions of Atlantic Intermediate Water caused a bottom-water warming of up to 8 °C. The amplitude, timing, and geographic pattern of the delta13C events suggest that this bottom-water warming triggered clathrate instability along the East Greenland slope and a methane-induced depletion of delta13CDIC (DIC- dissolved inorganic carbon). Since delta13C event 1 matches a major peak in atmospheric CH4 concentration, this clathrate destabilization may have contributed to the rise in atmospheric CH4 and thus to climate warming over marine isotope stage 5.1. |
format |
Other/Unknown Material |
author |
Millo, Christian Sarnthein, Michael Erlenkeuser, Helmut Frederichs, Thomas |
author_facet |
Millo, Christian Sarnthein, Michael Erlenkeuser, Helmut Frederichs, Thomas |
author_sort |
Millo, Christian |
title |
Stable carbon and oxygen isotope record of Neogloboquadrina pachyderma and Cibicides lobatulus from the southwestern Greenland Sea |
title_short |
Stable carbon and oxygen isotope record of Neogloboquadrina pachyderma and Cibicides lobatulus from the southwestern Greenland Sea |
title_full |
Stable carbon and oxygen isotope record of Neogloboquadrina pachyderma and Cibicides lobatulus from the southwestern Greenland Sea |
title_fullStr |
Stable carbon and oxygen isotope record of Neogloboquadrina pachyderma and Cibicides lobatulus from the southwestern Greenland Sea |
title_full_unstemmed |
Stable carbon and oxygen isotope record of Neogloboquadrina pachyderma and Cibicides lobatulus from the southwestern Greenland Sea |
title_sort |
stable carbon and oxygen isotope record of neogloboquadrina pachyderma and cibicides lobatulus from the southwestern greenland sea |
publisher |
PANGAEA |
publishDate |
2005 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.738187 https://doi.org/10.1594/PANGAEA.738187 |
op_coverage |
MEDIAN LATITUDE: 67.890600 * MEDIAN LONGITUDE: -25.005750 * SOUTH-BOUND LATITUDE: 67.850300 * WEST-BOUND LONGITUDE: -25.426500 * NORTH-BOUND LATITUDE: 67.930900 * EAST-BOUND LONGITUDE: -24.585000 * DATE/TIME START: 2002-07-06T00:44:00 * DATE/TIME END: 2002-07-06T10:32:00 |
long_lat |
ENVELOPE(-25.426500,-24.585000,67.930900,67.850300) |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
East Greenland Greenland Greenland Sea Iceland Neogloboquadrina pachyderma |
genre_facet |
East Greenland Greenland Greenland Sea Iceland Neogloboquadrina pachyderma |
op_source |
Supplement to: Millo, Christian; Sarnthein, Michael; Erlenkeuser, Helmut; Frederichs, Thomas (2005): Methane-driven late Pleistocene d13C minima and overflow reversals in the southwestern Greenland Sea. Geology, 33(11), 873-876, https://doi.org/10.1130/G21790.1 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.738187 https://doi.org/10.1594/PANGAEA.738187 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.73818710.1130/G21790.1 |
_version_ |
1811637962383818752 |