Stability of North Atlantic water masses in face of pronounced climate variability during the Pleistocene
Author Posting. © American Geophysical Union, 2004. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Paleoceanography 19 (2004): PA2008, doi:10.1029/2003PA000921. Geochemical profiles from the No...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/3424 2023-05-15T16:27:59+02:00 Stability of North Atlantic water masses in face of pronounced climate variability during the Pleistocene Raymo, Maureen E. Oppo, Delia W. Flower, Benjamin P. Hodell, David A. McManus, Jerry F. Venz, K.A. Kleiven, Helga F. McIntyre, K. 2004-04-21 application/pdf text/plain application/postscript https://hdl.handle.net/1912/3424 en_US eng American Geophysical Union https://doi.org/10.1029/2003PA000921 Paleoceanography 19 (2004): PA2008 https://hdl.handle.net/1912/3424 doi:10.1029/2003PA000921 Paleoceanography 19 (2004): PA2008 doi:10.1029/2003PA000921 Paleoceanography North Atlantic Deep Water Pleistocene Article 2004 ftwhoas https://doi.org/10.1029/2003PA000921 2022-05-28T22:57:58Z Author Posting. © American Geophysical Union, 2004. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Paleoceanography 19 (2004): PA2008, doi:10.1029/2003PA000921. 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. National Science Foundation grants OCE-0118005 and OCE-0118001, which supported MER and DWO. Article in Journal/Newspaper Greenland Greenland Sea Labrador Sea North Atlantic Deep Water North Atlantic Sea ice Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Greenland Paleoceanography 19 2 n/a n/a |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Paleoceanography North Atlantic Deep Water Pleistocene |
spellingShingle |
Paleoceanography North Atlantic Deep Water Pleistocene Raymo, Maureen E. Oppo, Delia W. Flower, Benjamin P. Hodell, David A. McManus, Jerry F. Venz, K.A. Kleiven, Helga 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 |
description |
Author Posting. © American Geophysical Union, 2004. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Paleoceanography 19 (2004): PA2008, doi:10.1029/2003PA000921. 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. National Science Foundation grants OCE-0118005 and OCE-0118001, which supported MER and DWO. |
format |
Article in Journal/Newspaper |
author |
Raymo, Maureen E. Oppo, Delia W. Flower, Benjamin P. Hodell, David A. McManus, Jerry F. Venz, K.A. Kleiven, Helga F. McIntyre, K. |
author_facet |
Raymo, Maureen E. Oppo, Delia W. Flower, Benjamin P. Hodell, David A. McManus, Jerry F. Venz, K.A. Kleiven, Helga F. McIntyre, K. |
author_sort |
Raymo, Maureen 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 |
American Geophysical Union |
publishDate |
2004 |
url |
https://hdl.handle.net/1912/3424 |
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 |
Paleoceanography 19 (2004): PA2008 doi:10.1029/2003PA000921 |
op_relation |
https://doi.org/10.1029/2003PA000921 Paleoceanography 19 (2004): PA2008 https://hdl.handle.net/1912/3424 doi:10.1029/2003PA000921 |
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 |
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1766017599632572416 |