Deglacial Variability of Antarctic Intermediate Water Penetration into the North Atlantic from Authigenic Neodymium Isotope Ratios
Understanding intermediate water circulation across the last deglacial is critical in assessing the role of oceanic heat transport associated with Atlantic Meridional Overturning Circulation variability across abrupt climate events. However, the links between intermediate water circulation and abrup...
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ftolddominionuni:oai:digitalcommons.odu.edu:oeas_fac_pubs-1229 2023-06-11T04:06:01+02:00 Deglacial Variability of Antarctic Intermediate Water Penetration into the North Atlantic from Authigenic Neodymium Isotope Ratios Xie, Ruifang C. Marcantonio, Franco Schmidt, Matthew W. 2012-01-01T08:00:00Z application/pdf https://digitalcommons.odu.edu/oeas_fac_pubs/210 https://doi.org/10.1029/2012pa002337 https://digitalcommons.odu.edu/context/oeas_fac_pubs/article/1229/viewcontent/Xie_2012_Deglacial_variability_of_Antarctic_In.pdf unknown ODU Digital Commons https://digitalcommons.odu.edu/oeas_fac_pubs/210 doi:10.1029/2012pa002337 https://digitalcommons.odu.edu/context/oeas_fac_pubs/article/1229/viewcontent/Xie_2012_Deglacial_variability_of_Antarctic_In.pdf OES Faculty Publications AMOC Last glacial maximum Climate change Deep water Thermohaline circulation Ocean transport Geology Oceanography Paleontology article 2012 ftolddominionuni https://doi.org/10.1029/2012pa002337 2023-05-08T17:59:46Z Understanding intermediate water circulation across the last deglacial is critical in assessing the role of oceanic heat transport associated with Atlantic Meridional Overturning Circulation variability across abrupt climate events. However, the links between intermediate water circulation and abrupt climate events such as the Younger Dryas (YD) and Heinrich Event 1 (H1) are still poorly constrained. Here, we reconstruct changes in Antarctic Intermediate Water (AAIW) circulation in the subtropical North Atlantic over the past 25 kyr by measuring authigenic neodymium isotope ratios in sediments from two sites in the Florida Straits. Our authigenic Nd isotope records suggest that there was little to no penetration of AAIW into the subtropical North Atlantic during the YD and H1. Variations in the northward penetration of AAIW into the Florida Straits documented in our authigenic Nd isotope record are synchronous with multiple climatic archives, including the Greenland ice core δ18O record, the Cariaco Basin atmosphere Δ14C reconstruction, the Bermuda Rise sedimentary Pa/Th record, and nutrient and stable isotope data from the tropical North Atlantic. The synchroneity of our Nd records with multiple climatic archives suggests a tight connection between AAIW variability and high-latitude North Atlantic climate change. Article in Journal/Newspaper Antarc* Antarctic Greenland Greenland ice core ice core North Atlantic Old Dominion University: ODU Digital Commons Antarctic Greenland Paleoceanography 27 3 n/a n/a |
institution |
Open Polar |
collection |
Old Dominion University: ODU Digital Commons |
op_collection_id |
ftolddominionuni |
language |
unknown |
topic |
AMOC Last glacial maximum Climate change Deep water Thermohaline circulation Ocean transport Geology Oceanography Paleontology |
spellingShingle |
AMOC Last glacial maximum Climate change Deep water Thermohaline circulation Ocean transport Geology Oceanography Paleontology Xie, Ruifang C. Marcantonio, Franco Schmidt, Matthew W. Deglacial Variability of Antarctic Intermediate Water Penetration into the North Atlantic from Authigenic Neodymium Isotope Ratios |
topic_facet |
AMOC Last glacial maximum Climate change Deep water Thermohaline circulation Ocean transport Geology Oceanography Paleontology |
description |
Understanding intermediate water circulation across the last deglacial is critical in assessing the role of oceanic heat transport associated with Atlantic Meridional Overturning Circulation variability across abrupt climate events. However, the links between intermediate water circulation and abrupt climate events such as the Younger Dryas (YD) and Heinrich Event 1 (H1) are still poorly constrained. Here, we reconstruct changes in Antarctic Intermediate Water (AAIW) circulation in the subtropical North Atlantic over the past 25 kyr by measuring authigenic neodymium isotope ratios in sediments from two sites in the Florida Straits. Our authigenic Nd isotope records suggest that there was little to no penetration of AAIW into the subtropical North Atlantic during the YD and H1. Variations in the northward penetration of AAIW into the Florida Straits documented in our authigenic Nd isotope record are synchronous with multiple climatic archives, including the Greenland ice core δ18O record, the Cariaco Basin atmosphere Δ14C reconstruction, the Bermuda Rise sedimentary Pa/Th record, and nutrient and stable isotope data from the tropical North Atlantic. The synchroneity of our Nd records with multiple climatic archives suggests a tight connection between AAIW variability and high-latitude North Atlantic climate change. |
format |
Article in Journal/Newspaper |
author |
Xie, Ruifang C. Marcantonio, Franco Schmidt, Matthew W. |
author_facet |
Xie, Ruifang C. Marcantonio, Franco Schmidt, Matthew W. |
author_sort |
Xie, Ruifang C. |
title |
Deglacial Variability of Antarctic Intermediate Water Penetration into the North Atlantic from Authigenic Neodymium Isotope Ratios |
title_short |
Deglacial Variability of Antarctic Intermediate Water Penetration into the North Atlantic from Authigenic Neodymium Isotope Ratios |
title_full |
Deglacial Variability of Antarctic Intermediate Water Penetration into the North Atlantic from Authigenic Neodymium Isotope Ratios |
title_fullStr |
Deglacial Variability of Antarctic Intermediate Water Penetration into the North Atlantic from Authigenic Neodymium Isotope Ratios |
title_full_unstemmed |
Deglacial Variability of Antarctic Intermediate Water Penetration into the North Atlantic from Authigenic Neodymium Isotope Ratios |
title_sort |
deglacial variability of antarctic intermediate water penetration into the north atlantic from authigenic neodymium isotope ratios |
publisher |
ODU Digital Commons |
publishDate |
2012 |
url |
https://digitalcommons.odu.edu/oeas_fac_pubs/210 https://doi.org/10.1029/2012pa002337 https://digitalcommons.odu.edu/context/oeas_fac_pubs/article/1229/viewcontent/Xie_2012_Deglacial_variability_of_Antarctic_In.pdf |
geographic |
Antarctic Greenland |
geographic_facet |
Antarctic Greenland |
genre |
Antarc* Antarctic Greenland Greenland ice core ice core North Atlantic |
genre_facet |
Antarc* Antarctic Greenland Greenland ice core ice core North Atlantic |
op_source |
OES Faculty Publications |
op_relation |
https://digitalcommons.odu.edu/oeas_fac_pubs/210 doi:10.1029/2012pa002337 https://digitalcommons.odu.edu/context/oeas_fac_pubs/article/1229/viewcontent/Xie_2012_Deglacial_variability_of_Antarctic_In.pdf |
op_doi |
https://doi.org/10.1029/2012pa002337 |
container_title |
Paleoceanography |
container_volume |
27 |
container_issue |
3 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1768377735591231488 |