Stability of North Atlantic Water Masses in Face of Pronounced Climate Variability During the Pleistocene
Geochemical profiles from the North Atlantic Ocean suggest that the vertical δ13C structure of the water column at intermediate depths did not change significantly between glacial and interglacial time over much of the Pleistocene, despite large changes in ice volume and iceberg delivery from nearby...
Published in: | Paleoceanography |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Digital Commons @ University of South Florida
2004
|
Subjects: | |
Online Access: | https://digitalcommons.usf.edu/msc_facpub/24 https://doi.org/10.1029/2003PA000921 |
id |
ftunisfloridatam:oai:digitalcommons.usf.edu:msc_facpub-1023 |
---|---|
record_format |
openpolar |
spelling |
ftunisfloridatam:oai:digitalcommons.usf.edu:msc_facpub-1023 2023-05-15T16:27:25+02:00 Stability of North Atlantic Water Masses in Face of Pronounced Climate Variability During the Pleistocene Raymo, M. E. Oppo, D. W. Flower, Benjamin P. Hodell, D. A. McManus, J. F. Venz, K. A. Kleiven, K. F. McIntyre, K. 2004-04-21T07:00:00Z application/pdf https://digitalcommons.usf.edu/msc_facpub/24 https://doi.org/10.1029/2003PA000921 unknown Digital Commons @ University of South Florida https://digitalcommons.usf.edu/msc_facpub/24 https://doi.org/10.1029/2003PA000921 default Marine Science Faculty Publications paleoceanography North Atlantic Deep Water Pleistocene Life Sciences Marine Biology article 2004 ftunisfloridatam https://doi.org/10.1029/2003PA000921 2021-10-09T07:01:41Z Geochemical profiles from the North Atlantic Ocean suggest that the vertical δ13C structure of the water column at intermediate depths did not change significantly between glacial and interglacial time over much of the Pleistocene, despite large changes in ice volume and iceberg delivery from nearby landmasses. The most anomalous δ13C profiles are from the extreme interglaciations of the late Pleistocene. This compilation of data suggests that, unlike today (an extreme interglaciation), the two primary sources of northern deep water, Norwegian‐Greenland Sea and Labrador Sea/subpolar North Atlantic, had different characteristic δ13C values over most of the Pleistocene. We speculate that the current open sea ice conditions in the Norwegian‐Greenland Sea are a relatively rare occurrence and that the high‐δ13C deep water that forms in this region today is geologically unusual. If northern source deep waters can have highly variable δ13C, then this likelihood must be considered when inferring past circulation changes from benthic δ13C records. Article in Journal/Newspaper Greenland Greenland Sea Labrador Sea North Atlantic Deep Water North Atlantic Sea ice Digital Commons University of South Florida (USF) Greenland Paleoceanography 19 2 n/a n/a |
institution |
Open Polar |
collection |
Digital Commons University of South Florida (USF) |
op_collection_id |
ftunisfloridatam |
language |
unknown |
topic |
paleoceanography North Atlantic Deep Water Pleistocene Life Sciences Marine Biology |
spellingShingle |
paleoceanography North Atlantic Deep Water Pleistocene Life Sciences Marine Biology Raymo, M. E. Oppo, D. W. Flower, Benjamin P. Hodell, D. A. McManus, J. F. Venz, K. A. Kleiven, K. F. McIntyre, K. Stability of North Atlantic Water Masses in Face of Pronounced Climate Variability During the Pleistocene |
topic_facet |
paleoceanography North Atlantic Deep Water Pleistocene Life Sciences Marine Biology |
description |
Geochemical profiles from the North Atlantic Ocean suggest that the vertical δ13C structure of the water column at intermediate depths did not change significantly between glacial and interglacial time over much of the Pleistocene, despite large changes in ice volume and iceberg delivery from nearby landmasses. The most anomalous δ13C profiles are from the extreme interglaciations of the late Pleistocene. This compilation of data suggests that, unlike today (an extreme interglaciation), the two primary sources of northern deep water, Norwegian‐Greenland Sea and Labrador Sea/subpolar North Atlantic, had different characteristic δ13C values over most of the Pleistocene. We speculate that the current open sea ice conditions in the Norwegian‐Greenland Sea are a relatively rare occurrence and that the high‐δ13C deep water that forms in this region today is geologically unusual. If northern source deep waters can have highly variable δ13C, then this likelihood must be considered when inferring past circulation changes from benthic δ13C records. |
format |
Article in Journal/Newspaper |
author |
Raymo, M. E. Oppo, D. W. Flower, Benjamin P. Hodell, D. A. McManus, J. F. Venz, K. A. Kleiven, K. F. McIntyre, K. |
author_facet |
Raymo, M. E. Oppo, D. W. Flower, Benjamin P. Hodell, D. A. McManus, J. F. Venz, K. A. Kleiven, K. F. McIntyre, K. |
author_sort |
Raymo, M. E. |
title |
Stability of North Atlantic Water Masses in Face of Pronounced Climate Variability During the Pleistocene |
title_short |
Stability of North Atlantic Water Masses in Face of Pronounced Climate Variability During the Pleistocene |
title_full |
Stability of North Atlantic Water Masses in Face of Pronounced Climate Variability During the Pleistocene |
title_fullStr |
Stability of North Atlantic Water Masses in Face of Pronounced Climate Variability During the Pleistocene |
title_full_unstemmed |
Stability of North Atlantic Water Masses in Face of Pronounced Climate Variability During the Pleistocene |
title_sort |
stability of north atlantic water masses in face of pronounced climate variability during the pleistocene |
publisher |
Digital Commons @ University of South Florida |
publishDate |
2004 |
url |
https://digitalcommons.usf.edu/msc_facpub/24 https://doi.org/10.1029/2003PA000921 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland Sea Labrador Sea North Atlantic Deep Water North Atlantic Sea ice |
genre_facet |
Greenland Greenland Sea Labrador Sea North Atlantic Deep Water North Atlantic Sea ice |
op_source |
Marine Science Faculty Publications |
op_relation |
https://digitalcommons.usf.edu/msc_facpub/24 https://doi.org/10.1029/2003PA000921 |
op_rights |
default |
op_doi |
https://doi.org/10.1029/2003PA000921 |
container_title |
Paleoceanography |
container_volume |
19 |
container_issue |
2 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1766016598912532480 |