High resolution benthic stable-isotope records from ODP Site 1263 and 1262, supplement to: Lauretano, Vittoria; Littler, Kate; Polling, M; Zachos, James C; Lourens, Lucas Joost (2015): Frequency, magnitude and character of hyperthermal events at the onset of the Early Eocene Climatic Optimum. Climate of the Past, 11(10), 1313-1324
Recent studies have shown that the Early Eocene Climatic Optimum (EECO) was preceded by a series of short-lived global warming events, known as hyperthermals. Here we present high-resolution benthic stable carbon and oxygen isotope records from ODP Sites 1262 and 1263 (Walvis Ridge, SE Atlantic) bet...
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ftdatacite:10.1594/pangaea.854822 2023-05-15T17:58:12+02:00 High resolution benthic stable-isotope records from ODP Site 1263 and 1262, supplement to: Lauretano, Vittoria; Littler, Kate; Polling, M; Zachos, James C; Lourens, Lucas Joost (2015): Frequency, magnitude and character of hyperthermal events at the onset of the Early Eocene Climatic Optimum. Climate of the Past, 11(10), 1313-1324 Lauretano, Vittoria Littler, Kate Polling, M Zachos, James C Lourens, Lucas Joost 2015 application/zip https://dx.doi.org/10.1594/pangaea.854822 https://doi.pangaea.de/10.1594/PANGAEA.854822 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.5194/cp-11-1313-2015 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Ocean Drilling Program ODP Supplementary Collection of Datasets Collection article 2015 ftdatacite https://doi.org/10.1594/pangaea.854822 https://doi.org/10.5194/cp-11-1313-2015 2022-02-08T16:02:21Z Recent studies have shown that the Early Eocene Climatic Optimum (EECO) was preceded by a series of short-lived global warming events, known as hyperthermals. Here we present high-resolution benthic stable carbon and oxygen isotope records from ODP Sites 1262 and 1263 (Walvis Ridge, SE Atlantic) between ~54 and ~52 million years ago, tightly constraining the character, timing, and magnitude of six prominent hyperthermal events. These events, which include Eocene Thermal Maximum (ETM) 2 and 3, are studied in relation to orbital forcing and long-term trends. Our findings reveal an almost linear relationship between d13C and d18O for all these hyperthermals, indicating that the eccentricity-paced co-variance between deep-sea temperature changes and extreme perturbations in the exogenic carbon pool persisted during these events towards the onset of the EECO, in accord with previous observations for the Paleocene Eocene Thermal Maximum (PETM) and ETM2. The covariance of d13C and d18O during H2 and I2, which are the second pulses of the "paired" hyperthermal events ETM2-H2 and I1-I2, deviates with respect to the other events. We hypothesize that this could relate to a relatively higher contribution of an isotopically heavier source of carbon, such as peat or permafrost, and/or to climate feedbacks/local changes in circulation. Finally, the d18O records of the two sites show a systematic offset with on average 0.2 per mil heavier values for the shallower Site 1263, which we link to a slightly heavier isotopic composition of the intermediate water mass reaching the northeastern flank of the Walvis Ridge compared to that of the deeper northwestern water mass at Site 1262. Article in Journal/Newspaper permafrost DataCite Metadata Store (German National Library of Science and Technology) |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Ocean Drilling Program ODP |
spellingShingle |
Ocean Drilling Program ODP Lauretano, Vittoria Littler, Kate Polling, M Zachos, James C Lourens, Lucas Joost High resolution benthic stable-isotope records from ODP Site 1263 and 1262, supplement to: Lauretano, Vittoria; Littler, Kate; Polling, M; Zachos, James C; Lourens, Lucas Joost (2015): Frequency, magnitude and character of hyperthermal events at the onset of the Early Eocene Climatic Optimum. Climate of the Past, 11(10), 1313-1324 |
topic_facet |
Ocean Drilling Program ODP |
description |
Recent studies have shown that the Early Eocene Climatic Optimum (EECO) was preceded by a series of short-lived global warming events, known as hyperthermals. Here we present high-resolution benthic stable carbon and oxygen isotope records from ODP Sites 1262 and 1263 (Walvis Ridge, SE Atlantic) between ~54 and ~52 million years ago, tightly constraining the character, timing, and magnitude of six prominent hyperthermal events. These events, which include Eocene Thermal Maximum (ETM) 2 and 3, are studied in relation to orbital forcing and long-term trends. Our findings reveal an almost linear relationship between d13C and d18O for all these hyperthermals, indicating that the eccentricity-paced co-variance between deep-sea temperature changes and extreme perturbations in the exogenic carbon pool persisted during these events towards the onset of the EECO, in accord with previous observations for the Paleocene Eocene Thermal Maximum (PETM) and ETM2. The covariance of d13C and d18O during H2 and I2, which are the second pulses of the "paired" hyperthermal events ETM2-H2 and I1-I2, deviates with respect to the other events. We hypothesize that this could relate to a relatively higher contribution of an isotopically heavier source of carbon, such as peat or permafrost, and/or to climate feedbacks/local changes in circulation. Finally, the d18O records of the two sites show a systematic offset with on average 0.2 per mil heavier values for the shallower Site 1263, which we link to a slightly heavier isotopic composition of the intermediate water mass reaching the northeastern flank of the Walvis Ridge compared to that of the deeper northwestern water mass at Site 1262. |
format |
Article in Journal/Newspaper |
author |
Lauretano, Vittoria Littler, Kate Polling, M Zachos, James C Lourens, Lucas Joost |
author_facet |
Lauretano, Vittoria Littler, Kate Polling, M Zachos, James C Lourens, Lucas Joost |
author_sort |
Lauretano, Vittoria |
title |
High resolution benthic stable-isotope records from ODP Site 1263 and 1262, supplement to: Lauretano, Vittoria; Littler, Kate; Polling, M; Zachos, James C; Lourens, Lucas Joost (2015): Frequency, magnitude and character of hyperthermal events at the onset of the Early Eocene Climatic Optimum. Climate of the Past, 11(10), 1313-1324 |
title_short |
High resolution benthic stable-isotope records from ODP Site 1263 and 1262, supplement to: Lauretano, Vittoria; Littler, Kate; Polling, M; Zachos, James C; Lourens, Lucas Joost (2015): Frequency, magnitude and character of hyperthermal events at the onset of the Early Eocene Climatic Optimum. Climate of the Past, 11(10), 1313-1324 |
title_full |
High resolution benthic stable-isotope records from ODP Site 1263 and 1262, supplement to: Lauretano, Vittoria; Littler, Kate; Polling, M; Zachos, James C; Lourens, Lucas Joost (2015): Frequency, magnitude and character of hyperthermal events at the onset of the Early Eocene Climatic Optimum. Climate of the Past, 11(10), 1313-1324 |
title_fullStr |
High resolution benthic stable-isotope records from ODP Site 1263 and 1262, supplement to: Lauretano, Vittoria; Littler, Kate; Polling, M; Zachos, James C; Lourens, Lucas Joost (2015): Frequency, magnitude and character of hyperthermal events at the onset of the Early Eocene Climatic Optimum. Climate of the Past, 11(10), 1313-1324 |
title_full_unstemmed |
High resolution benthic stable-isotope records from ODP Site 1263 and 1262, supplement to: Lauretano, Vittoria; Littler, Kate; Polling, M; Zachos, James C; Lourens, Lucas Joost (2015): Frequency, magnitude and character of hyperthermal events at the onset of the Early Eocene Climatic Optimum. Climate of the Past, 11(10), 1313-1324 |
title_sort |
high resolution benthic stable-isotope records from odp site 1263 and 1262, supplement to: lauretano, vittoria; littler, kate; polling, m; zachos, james c; lourens, lucas joost (2015): frequency, magnitude and character of hyperthermal events at the onset of the early eocene climatic optimum. climate of the past, 11(10), 1313-1324 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2015 |
url |
https://dx.doi.org/10.1594/pangaea.854822 https://doi.pangaea.de/10.1594/PANGAEA.854822 |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
https://dx.doi.org/10.5194/cp-11-1313-2015 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.854822 https://doi.org/10.5194/cp-11-1313-2015 |
_version_ |
1766166753737441280 |