Independent tephrochronological evidence for rapid and synchronous oceanic and atmospheric temperature rises over the Greenland stadial-interstadial transitions between ca. 32 and 40 ka b2k
Understanding the dynamics that drove past abrupt climate changes, such as the Dansgaard-Oeschger (DO) events, depends on combined proxy evidence from disparate archives. To identify leads, lags and synchronicity between different climate system components, independent and robust chronologies are re...
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fttriple:oai:gotriple.eu:10670/1.11sncf 2023-05-15T16:26:18+02:00 Independent tephrochronological evidence for rapid and synchronous oceanic and atmospheric temperature rises over the Greenland stadial-interstadial transitions between ca. 32 and 40 ka b2k Berben, Sarah M.p. Dokken, Trond M. Abbott, Peter M. Cook, Eliza Sadatzki, Henrik Simon, Margit H Jansen, Eystein 2020-01-01 https://doi.org/10.1016/j.quascirev.2020.106277 https://archimer.ifremer.fr/doc/00622/73391/72606.pdf https://archimer.ifremer.fr/doc/00622/73391/72607.xlsx en eng Elsevier BV doi:10.1016/j.quascirev.2020.106277 10670/1.11sncf https://archimer.ifremer.fr/doc/00622/73391/72606.pdf https://archimer.ifremer.fr/doc/00622/73391/72607.xlsx other Archimer, archive institutionnelle de l'Ifremer Quaternary Science Reviews (0277-3791) (Elsevier BV), 2020-05 , Vol. 236 , P. 106277(25p.) geo envir Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ 2020 fttriple https://doi.org/10.1016/j.quascirev.2020.106277 2023-01-22T16:46:59Z Understanding the dynamics that drove past abrupt climate changes, such as the Dansgaard-Oeschger (DO) events, depends on combined proxy evidence from disparate archives. To identify leads, lags and synchronicity between different climate system components, independent and robust chronologies are required. Cryptotephrochronology is a key geochronological tool as cryptotephra horizons can act as isochrons linking disparate and/or distant records. Here, we investigated marine sediment core MD99-2284 from the Norwegian Sea to look for previously identified Greenland ice core cryptotephra horizons and define time-parallel markers between the archives. We explored potential secondary transport and depositional mechanisms that could hamper the isochronous integrity of such horizons. We identified six cryptotephra layers of which four correlate to previously known Greenland ice core horizons. None of those were identified in other marine cores and thus, this study contributes greatly to the North Atlantic tephra framework tripling the original amount of existing isochrons between ca. 25 and 60 ka b2k. The latter allow a synchronization between MD99-2284 and the Greenland ice cores between ca. 32–40 ka b2k, which is, in the North Atlantic, the shortest time-interval during the Last Glacial Period to be constrained by four independent tephra isochrons. These findings provide essential tephra-based evidence for synchronous and rapid oceanic and atmospheric temperature rises during the Greenland Stadial-Interstadial transitions. Furthermore, it enables us to estimate the average peak-duration of interstadial temperature overshoots at approximately 136 years. As such, this well-targeted high-resolution investigation successfully demonstrates the use of cryptotephra for geochronological purposes in the marine realm. Text Greenland Greenland ice core Greenland ice cores ice core North Atlantic Norwegian Sea Unknown Greenland Norwegian Sea Quaternary Science Reviews 236 106277 |
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geo envir Berben, Sarah M.p. Dokken, Trond M. Abbott, Peter M. Cook, Eliza Sadatzki, Henrik Simon, Margit H Jansen, Eystein Independent tephrochronological evidence for rapid and synchronous oceanic and atmospheric temperature rises over the Greenland stadial-interstadial transitions between ca. 32 and 40 ka b2k |
topic_facet |
geo envir |
description |
Understanding the dynamics that drove past abrupt climate changes, such as the Dansgaard-Oeschger (DO) events, depends on combined proxy evidence from disparate archives. To identify leads, lags and synchronicity between different climate system components, independent and robust chronologies are required. Cryptotephrochronology is a key geochronological tool as cryptotephra horizons can act as isochrons linking disparate and/or distant records. Here, we investigated marine sediment core MD99-2284 from the Norwegian Sea to look for previously identified Greenland ice core cryptotephra horizons and define time-parallel markers between the archives. We explored potential secondary transport and depositional mechanisms that could hamper the isochronous integrity of such horizons. We identified six cryptotephra layers of which four correlate to previously known Greenland ice core horizons. None of those were identified in other marine cores and thus, this study contributes greatly to the North Atlantic tephra framework tripling the original amount of existing isochrons between ca. 25 and 60 ka b2k. The latter allow a synchronization between MD99-2284 and the Greenland ice cores between ca. 32–40 ka b2k, which is, in the North Atlantic, the shortest time-interval during the Last Glacial Period to be constrained by four independent tephra isochrons. These findings provide essential tephra-based evidence for synchronous and rapid oceanic and atmospheric temperature rises during the Greenland Stadial-Interstadial transitions. Furthermore, it enables us to estimate the average peak-duration of interstadial temperature overshoots at approximately 136 years. As such, this well-targeted high-resolution investigation successfully demonstrates the use of cryptotephra for geochronological purposes in the marine realm. |
format |
Text |
author |
Berben, Sarah M.p. Dokken, Trond M. Abbott, Peter M. Cook, Eliza Sadatzki, Henrik Simon, Margit H Jansen, Eystein |
author_facet |
Berben, Sarah M.p. Dokken, Trond M. Abbott, Peter M. Cook, Eliza Sadatzki, Henrik Simon, Margit H Jansen, Eystein |
author_sort |
Berben, Sarah M.p. |
title |
Independent tephrochronological evidence for rapid and synchronous oceanic and atmospheric temperature rises over the Greenland stadial-interstadial transitions between ca. 32 and 40 ka b2k |
title_short |
Independent tephrochronological evidence for rapid and synchronous oceanic and atmospheric temperature rises over the Greenland stadial-interstadial transitions between ca. 32 and 40 ka b2k |
title_full |
Independent tephrochronological evidence for rapid and synchronous oceanic and atmospheric temperature rises over the Greenland stadial-interstadial transitions between ca. 32 and 40 ka b2k |
title_fullStr |
Independent tephrochronological evidence for rapid and synchronous oceanic and atmospheric temperature rises over the Greenland stadial-interstadial transitions between ca. 32 and 40 ka b2k |
title_full_unstemmed |
Independent tephrochronological evidence for rapid and synchronous oceanic and atmospheric temperature rises over the Greenland stadial-interstadial transitions between ca. 32 and 40 ka b2k |
title_sort |
independent tephrochronological evidence for rapid and synchronous oceanic and atmospheric temperature rises over the greenland stadial-interstadial transitions between ca. 32 and 40 ka b2k |
publisher |
Elsevier BV |
publishDate |
2020 |
url |
https://doi.org/10.1016/j.quascirev.2020.106277 https://archimer.ifremer.fr/doc/00622/73391/72606.pdf https://archimer.ifremer.fr/doc/00622/73391/72607.xlsx |
geographic |
Greenland Norwegian Sea |
geographic_facet |
Greenland Norwegian Sea |
genre |
Greenland Greenland ice core Greenland ice cores ice core North Atlantic Norwegian Sea |
genre_facet |
Greenland Greenland ice core Greenland ice cores ice core North Atlantic Norwegian Sea |
op_source |
Archimer, archive institutionnelle de l'Ifremer Quaternary Science Reviews (0277-3791) (Elsevier BV), 2020-05 , Vol. 236 , P. 106277(25p.) |
op_relation |
doi:10.1016/j.quascirev.2020.106277 10670/1.11sncf https://archimer.ifremer.fr/doc/00622/73391/72606.pdf https://archimer.ifremer.fr/doc/00622/73391/72607.xlsx |
op_rights |
other |
op_doi |
https://doi.org/10.1016/j.quascirev.2020.106277 |
container_title |
Quaternary Science Reviews |
container_volume |
236 |
container_start_page |
106277 |
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1766015208567865344 |