Stable carbon isotopes of Planulina wuellerstorfi of sediment core MD01-2444
The observation that Greenland and Antarctic temperatures have followed a specific 'asymmetrical' pattern on millennial time-scales sets rigid constraints on any viable theory of abrupt climate change. The further observation that the very same asymmetry is also reflected in planktonic and...
Main Authors: | , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2007
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.849505 https://doi.org/10.1594/PANGAEA.849505 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.849505 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.849505 2023-05-15T14:03:05+02:00 Stable carbon isotopes of Planulina wuellerstorfi of sediment core MD01-2444 Skinner, Luke C Elderfield, Henry Hall, Michael A LATITUDE: 37.565000 * LONGITUDE: -10.134000 * MINIMUM DEPTH, sediment/rock: 6.99 m * MAXIMUM DEPTH, sediment/rock: 14.35 m 2007-09-16 text/tab-separated-values, 183 data points https://doi.pangaea.de/10.1594/PANGAEA.849505 https://doi.org/10.1594/PANGAEA.849505 en eng PANGAEA Gottschalk, Julia; Skinner, Luke C; Misra, Sambuddha; Waelbroeck, Claire; Menviel, Laurie; Timmermann, Axel (2015): Abrupt changes in the southern extent of North Atlantic Deep Water during Dansgaard–Oeschger events. Nature Geoscience, 8(12), 950-954, https://doi.org/10.1038/ngeo2558 Lynch-Stieglitz, Jean; Schmidt, Matthew W; Henry, L Gene; Curry, William B; Skinner, Luke C; Mulitza, Stefan; Zhang, Rong; Chang, Ping (2014): Muted change in Atlantic overturning circulation over some glacial-aged Heinrich events. Nature Geoscience, 7(2), 144-150, https://doi.org/10.1038/ngeo2045 https://doi.pangaea.de/10.1594/PANGAEA.849505 https://doi.org/10.1594/PANGAEA.849505 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Skinner, Luke C; Elderfield, Henry; Hall, Michael A (2007): Phasing of Millennial Climate Events and Northeast Atlantic Deep-Water Temperature Change Since 50 Ka Bp. In: Schmittner, A; Chiang, JCH; Hemming, SR (eds.), Ocean Circulation: Mechanisms and Impacts-Past and Future Changes of Meridional Overturning, Geophysical Monograph Series, 173, 197-208, https://doi.org/10.1029/173GM14 AGE CALYPSO Calypso Corer DEPTH sediment/rock GEOSCIENCES MARMARCORE Marion Dufresne (1995) MD01-2444 MD123 Planulina wuellerstorfi δ13C Dataset 2007 ftpangaea https://doi.org/10.1594/PANGAEA.849505 https://doi.org/10.1029/173GM14 https://doi.org/10.1038/ngeo2558 https://doi.org/10.1038/ngeo2045 2023-01-20T09:06:19Z The observation that Greenland and Antarctic temperatures have followed a specific 'asymmetrical' pattern on millennial time-scales sets rigid constraints on any viable theory of abrupt climate change. The further observation that the very same asymmetry is also reflected in planktonic and benthic d18O measurements from the Northeast Atlantic has extended this constraint to include a specific response in the ocean. Here we present records of deep-water temperature, d18O and d13C variability from the Northeast Atlantic that help to shed light on the links between overturning circulation perturbations, sea-level variability and inter-hemispheric climate change on millennial time-scales. Results indicate that while deep-water temperatures in the Northeast Atlantic have tracked Greenland climate, the d18O signature of local deepwater (d18Odw) has varied in a manner more reminiscent of Antarctic temperature variability. The previously identified correspondence of Antarctic warm events with benthic d18O minima in the Northeast Atlantic is thus found to apply specifically to d18Odw minima, and to extend beyond Marine Isotope Stage 3 to the entirety of the last 50 ka. It is impossible to reconcile completely the Iberian Margin d18Odw record with existing reconstructions of millennial sea-level variability, leading to the conclusion that a significant portion of the d18Odw record must represent local hydrographic change. This is supported by benthic d13C measurements, which suggest the incursion during Greenland stadials of a colder, low-d18O and low-d13C water-mass, of presumed Antarctic origin. These observations confirm a one-to-one coupling of inter-hemispheric climate events with changes in the Atlantic overturning circulation, but fail to rule in or out a unique mechanism by which they were triggered. Dataset Antarc* Antarctic Greenland Northeast Atlantic PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Greenland ENVELOPE(-10.134000,-10.134000,37.565000,37.565000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AGE CALYPSO Calypso Corer DEPTH sediment/rock GEOSCIENCES MARMARCORE Marion Dufresne (1995) MD01-2444 MD123 Planulina wuellerstorfi δ13C |
spellingShingle |
AGE CALYPSO Calypso Corer DEPTH sediment/rock GEOSCIENCES MARMARCORE Marion Dufresne (1995) MD01-2444 MD123 Planulina wuellerstorfi δ13C Skinner, Luke C Elderfield, Henry Hall, Michael A Stable carbon isotopes of Planulina wuellerstorfi of sediment core MD01-2444 |
topic_facet |
AGE CALYPSO Calypso Corer DEPTH sediment/rock GEOSCIENCES MARMARCORE Marion Dufresne (1995) MD01-2444 MD123 Planulina wuellerstorfi δ13C |
description |
The observation that Greenland and Antarctic temperatures have followed a specific 'asymmetrical' pattern on millennial time-scales sets rigid constraints on any viable theory of abrupt climate change. The further observation that the very same asymmetry is also reflected in planktonic and benthic d18O measurements from the Northeast Atlantic has extended this constraint to include a specific response in the ocean. Here we present records of deep-water temperature, d18O and d13C variability from the Northeast Atlantic that help to shed light on the links between overturning circulation perturbations, sea-level variability and inter-hemispheric climate change on millennial time-scales. Results indicate that while deep-water temperatures in the Northeast Atlantic have tracked Greenland climate, the d18O signature of local deepwater (d18Odw) has varied in a manner more reminiscent of Antarctic temperature variability. The previously identified correspondence of Antarctic warm events with benthic d18O minima in the Northeast Atlantic is thus found to apply specifically to d18Odw minima, and to extend beyond Marine Isotope Stage 3 to the entirety of the last 50 ka. It is impossible to reconcile completely the Iberian Margin d18Odw record with existing reconstructions of millennial sea-level variability, leading to the conclusion that a significant portion of the d18Odw record must represent local hydrographic change. This is supported by benthic d13C measurements, which suggest the incursion during Greenland stadials of a colder, low-d18O and low-d13C water-mass, of presumed Antarctic origin. These observations confirm a one-to-one coupling of inter-hemispheric climate events with changes in the Atlantic overturning circulation, but fail to rule in or out a unique mechanism by which they were triggered. |
format |
Dataset |
author |
Skinner, Luke C Elderfield, Henry Hall, Michael A |
author_facet |
Skinner, Luke C Elderfield, Henry Hall, Michael A |
author_sort |
Skinner, Luke C |
title |
Stable carbon isotopes of Planulina wuellerstorfi of sediment core MD01-2444 |
title_short |
Stable carbon isotopes of Planulina wuellerstorfi of sediment core MD01-2444 |
title_full |
Stable carbon isotopes of Planulina wuellerstorfi of sediment core MD01-2444 |
title_fullStr |
Stable carbon isotopes of Planulina wuellerstorfi of sediment core MD01-2444 |
title_full_unstemmed |
Stable carbon isotopes of Planulina wuellerstorfi of sediment core MD01-2444 |
title_sort |
stable carbon isotopes of planulina wuellerstorfi of sediment core md01-2444 |
publisher |
PANGAEA |
publishDate |
2007 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.849505 https://doi.org/10.1594/PANGAEA.849505 |
op_coverage |
LATITUDE: 37.565000 * LONGITUDE: -10.134000 * MINIMUM DEPTH, sediment/rock: 6.99 m * MAXIMUM DEPTH, sediment/rock: 14.35 m |
long_lat |
ENVELOPE(-10.134000,-10.134000,37.565000,37.565000) |
geographic |
Antarctic Greenland |
geographic_facet |
Antarctic Greenland |
genre |
Antarc* Antarctic Greenland Northeast Atlantic |
genre_facet |
Antarc* Antarctic Greenland Northeast Atlantic |
op_source |
Supplement to: Skinner, Luke C; Elderfield, Henry; Hall, Michael A (2007): Phasing of Millennial Climate Events and Northeast Atlantic Deep-Water Temperature Change Since 50 Ka Bp. In: Schmittner, A; Chiang, JCH; Hemming, SR (eds.), Ocean Circulation: Mechanisms and Impacts-Past and Future Changes of Meridional Overturning, Geophysical Monograph Series, 173, 197-208, https://doi.org/10.1029/173GM14 |
op_relation |
Gottschalk, Julia; Skinner, Luke C; Misra, Sambuddha; Waelbroeck, Claire; Menviel, Laurie; Timmermann, Axel (2015): Abrupt changes in the southern extent of North Atlantic Deep Water during Dansgaard–Oeschger events. Nature Geoscience, 8(12), 950-954, https://doi.org/10.1038/ngeo2558 Lynch-Stieglitz, Jean; Schmidt, Matthew W; Henry, L Gene; Curry, William B; Skinner, Luke C; Mulitza, Stefan; Zhang, Rong; Chang, Ping (2014): Muted change in Atlantic overturning circulation over some glacial-aged Heinrich events. Nature Geoscience, 7(2), 144-150, https://doi.org/10.1038/ngeo2045 https://doi.pangaea.de/10.1594/PANGAEA.849505 https://doi.org/10.1594/PANGAEA.849505 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.849505 https://doi.org/10.1029/173GM14 https://doi.org/10.1038/ngeo2558 https://doi.org/10.1038/ngeo2045 |
_version_ |
1766273589642788864 |