Regional benthic δ¹⁸O stacks and their δ¹⁸O uncertainties
Benthic δ18O changes are often assumed to be globally synchronous, but studies comparing 2–9 radiocarbon‐dated records over the most recent deglaciation (Termination 1) have proposed differences in the timing of benthic δ18O change between the Atlantic and Pacific, intermediate and deep, and North a...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.891137 2024-09-15T18:22:43+00:00 Regional benthic δ¹⁸O stacks and their δ¹⁸O uncertainties Stern, Joseph V Lisiecki, Lorraine E 2018 text/tab-separated-values, 1794 data points https://doi.pangaea.de/10.1594/PANGAEA.891137 https://doi.org/10.1594/PANGAEA.891137 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.891137 https://doi.org/10.1594/PANGAEA.891137 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Stern, Joseph V; Lisiecki, Lorraine E (2014): Termination 1 timing in radiocarbon-dated regional benthic δ18O stacks. Paleoceanography, 29(12), 1127-1142, https://doi.org/10.1002/2014PA002700 AGE Number of points δ18O standard error dataset 2018 ftpangaea https://doi.org/10.1594/PANGAEA.89113710.1002/2014PA002700 2024-07-24T02:31:33Z Benthic δ18O changes are often assumed to be globally synchronous, but studies comparing 2–9 radiocarbon‐dated records over the most recent deglaciation (Termination 1) have proposed differences in the timing of benthic δ18O change between the Atlantic and Pacific, intermediate and deep, and North and South Atlantic. Because of the relatively small number of records used in these previous studies, it has remained unclear whether these differences are local or regional in scale. Here we present seven regional benthic δ18O stacks for 0–40 kyr B.P. that include 252 records with independent regional age models constrained by 852 planktonic foraminiferal 14C dates from 61 of these cores. We find a 4000 year difference between the earliest termination onset in the intermediate South Atlantic at 18.5 (95% confidence interval: 17.9–19.0) kyr B.P. and the latest in the deep Indian at 14.5 (14.1–15.0) kyr B.P. The termination onset occurs at 17.5 kyr B.P. in the intermediate and deep North Atlantic, deep South Atlantic, and deep Pacific. However, throughout the termination deep North Atlantic benthic δ18O leads the deep Pacific by an average of 1000 year and a maximum of 1700 year. Additionally, the intermediate Pacific termination onset at 16.5 (16.1–16.9) kyr B.P. demonstrates that intermediate‐depth benthic δ18O change was not globally synchronous. These regional stacks provide better age models than a global stack across Termination 1 and potentially important constraints on deglacial ocean circulation changes. Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science |
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Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AGE Number of points δ18O standard error |
spellingShingle |
AGE Number of points δ18O standard error Stern, Joseph V Lisiecki, Lorraine E Regional benthic δ¹⁸O stacks and their δ¹⁸O uncertainties |
topic_facet |
AGE Number of points δ18O standard error |
description |
Benthic δ18O changes are often assumed to be globally synchronous, but studies comparing 2–9 radiocarbon‐dated records over the most recent deglaciation (Termination 1) have proposed differences in the timing of benthic δ18O change between the Atlantic and Pacific, intermediate and deep, and North and South Atlantic. Because of the relatively small number of records used in these previous studies, it has remained unclear whether these differences are local or regional in scale. Here we present seven regional benthic δ18O stacks for 0–40 kyr B.P. that include 252 records with independent regional age models constrained by 852 planktonic foraminiferal 14C dates from 61 of these cores. We find a 4000 year difference between the earliest termination onset in the intermediate South Atlantic at 18.5 (95% confidence interval: 17.9–19.0) kyr B.P. and the latest in the deep Indian at 14.5 (14.1–15.0) kyr B.P. The termination onset occurs at 17.5 kyr B.P. in the intermediate and deep North Atlantic, deep South Atlantic, and deep Pacific. However, throughout the termination deep North Atlantic benthic δ18O leads the deep Pacific by an average of 1000 year and a maximum of 1700 year. Additionally, the intermediate Pacific termination onset at 16.5 (16.1–16.9) kyr B.P. demonstrates that intermediate‐depth benthic δ18O change was not globally synchronous. These regional stacks provide better age models than a global stack across Termination 1 and potentially important constraints on deglacial ocean circulation changes. |
format |
Dataset |
author |
Stern, Joseph V Lisiecki, Lorraine E |
author_facet |
Stern, Joseph V Lisiecki, Lorraine E |
author_sort |
Stern, Joseph V |
title |
Regional benthic δ¹⁸O stacks and their δ¹⁸O uncertainties |
title_short |
Regional benthic δ¹⁸O stacks and their δ¹⁸O uncertainties |
title_full |
Regional benthic δ¹⁸O stacks and their δ¹⁸O uncertainties |
title_fullStr |
Regional benthic δ¹⁸O stacks and their δ¹⁸O uncertainties |
title_full_unstemmed |
Regional benthic δ¹⁸O stacks and their δ¹⁸O uncertainties |
title_sort |
regional benthic δ¹⁸o stacks and their δ¹⁸o uncertainties |
publisher |
PANGAEA |
publishDate |
2018 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.891137 https://doi.org/10.1594/PANGAEA.891137 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Stern, Joseph V; Lisiecki, Lorraine E (2014): Termination 1 timing in radiocarbon-dated regional benthic δ18O stacks. Paleoceanography, 29(12), 1127-1142, https://doi.org/10.1002/2014PA002700 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.891137 https://doi.org/10.1594/PANGAEA.891137 |
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.89113710.1002/2014PA002700 |
_version_ |
1810462662893502464 |