Authigenic Pb and Nd isotope composition of sediments from the Southern Ocean
Weddell Sea-derived Antarctic Bottom Water (AABW) is one of the most important deep water masses in the Southern Hemisphere occupying large portions of the deep Southern Ocean (SO) today. While substantial changes in SO-overturning circulation were previously suggested, the state of Weddell Sea AABW...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.909084 2023-05-15T14:04:57+02:00 Authigenic Pb and Nd isotope composition of sediments from the Southern Ocean Huang, Huang Gutjahr, Marcus Eisenhauer, Anton Kuhn, Gerhard MEDIAN LATITUDE: -60.181255 * MEDIAN LONGITUDE: -9.457426 * SOUTH-BOUND LATITUDE: -74.100330 * WEST-BOUND LONGITUDE: -50.000660 * NORTH-BOUND LATITUDE: -49.013330 * EAST-BOUND LONGITUDE: 15.006300 * DATE/TIME START: 1983-12-11T00:00:00 * DATE/TIME END: 2002-12-20T21:48:00 2019-11-26 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.909084 https://doi.org/10.1594/PANGAEA.909084 en eng PANGAEA Huang, Huang; Gutjahr, Marcus; Eisenhauer, Anton; Kuhn, Gerhard (2020): No detectable Weddell Sea Antarctic Bottom Water export during the Last and Penultimate Glacial Maximum. Nature Communications, 11(1), https://doi.org/10.1038/s41467-020-14302-3 https://doi.pangaea.de/10.1594/PANGAEA.909084 https://doi.org/10.1594/PANGAEA.909084 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY AWI_Paleo GEOMAR Helmholtz Centre for Ocean Research Kiel Ocean Drilling Program ODP Paleoenvironmental Reconstructions from Marine Sediments @ AWI Dataset 2019 ftpangaea https://doi.org/10.1594/PANGAEA.909084 https://doi.org/10.1038/s41467-020-14302-3 2023-01-20T07:34:27Z Weddell Sea-derived Antarctic Bottom Water (AABW) is one of the most important deep water masses in the Southern Hemisphere occupying large portions of the deep Southern Ocean (SO) today. While substantial changes in SO-overturning circulation were previously suggested, the state of Weddell Sea AABW export during glacial climates remains poorly understood. Here we report seawater-derived Nd and Pb isotope records that provide evidence for the absence of Weddell Sea-derived AABW in the Atlantic sector of the SO during the last two glacial maxima. Increasing delivery of Antarctic Pb to regions outside the Weddell Sea traced SO frontal displacements during both glacial terminations. The export of Weddell Sea-derived AABW resumed late during glacial terminations, coinciding with the last major atmospheric CO~2~ rise in the transition to the Holocene and the Eemian. Our new records lend strong support for a previously inferred AABW overturning stagnation event during the peak Eemian interglacial. Dataset Antarc* Antarctic Southern Ocean Weddell Sea PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Southern Ocean Weddell Sea Weddell ENVELOPE(-50.000660,15.006300,-49.013330,-74.100330) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI_Paleo GEOMAR Helmholtz Centre for Ocean Research Kiel Ocean Drilling Program ODP Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
spellingShingle |
AWI_Paleo GEOMAR Helmholtz Centre for Ocean Research Kiel Ocean Drilling Program ODP Paleoenvironmental Reconstructions from Marine Sediments @ AWI Huang, Huang Gutjahr, Marcus Eisenhauer, Anton Kuhn, Gerhard Authigenic Pb and Nd isotope composition of sediments from the Southern Ocean |
topic_facet |
AWI_Paleo GEOMAR Helmholtz Centre for Ocean Research Kiel Ocean Drilling Program ODP Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
description |
Weddell Sea-derived Antarctic Bottom Water (AABW) is one of the most important deep water masses in the Southern Hemisphere occupying large portions of the deep Southern Ocean (SO) today. While substantial changes in SO-overturning circulation were previously suggested, the state of Weddell Sea AABW export during glacial climates remains poorly understood. Here we report seawater-derived Nd and Pb isotope records that provide evidence for the absence of Weddell Sea-derived AABW in the Atlantic sector of the SO during the last two glacial maxima. Increasing delivery of Antarctic Pb to regions outside the Weddell Sea traced SO frontal displacements during both glacial terminations. The export of Weddell Sea-derived AABW resumed late during glacial terminations, coinciding with the last major atmospheric CO~2~ rise in the transition to the Holocene and the Eemian. Our new records lend strong support for a previously inferred AABW overturning stagnation event during the peak Eemian interglacial. |
format |
Dataset |
author |
Huang, Huang Gutjahr, Marcus Eisenhauer, Anton Kuhn, Gerhard |
author_facet |
Huang, Huang Gutjahr, Marcus Eisenhauer, Anton Kuhn, Gerhard |
author_sort |
Huang, Huang |
title |
Authigenic Pb and Nd isotope composition of sediments from the Southern Ocean |
title_short |
Authigenic Pb and Nd isotope composition of sediments from the Southern Ocean |
title_full |
Authigenic Pb and Nd isotope composition of sediments from the Southern Ocean |
title_fullStr |
Authigenic Pb and Nd isotope composition of sediments from the Southern Ocean |
title_full_unstemmed |
Authigenic Pb and Nd isotope composition of sediments from the Southern Ocean |
title_sort |
authigenic pb and nd isotope composition of sediments from the southern ocean |
publisher |
PANGAEA |
publishDate |
2019 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.909084 https://doi.org/10.1594/PANGAEA.909084 |
op_coverage |
MEDIAN LATITUDE: -60.181255 * MEDIAN LONGITUDE: -9.457426 * SOUTH-BOUND LATITUDE: -74.100330 * WEST-BOUND LONGITUDE: -50.000660 * NORTH-BOUND LATITUDE: -49.013330 * EAST-BOUND LONGITUDE: 15.006300 * DATE/TIME START: 1983-12-11T00:00:00 * DATE/TIME END: 2002-12-20T21:48:00 |
long_lat |
ENVELOPE(-50.000660,15.006300,-49.013330,-74.100330) |
geographic |
Antarctic Southern Ocean Weddell Sea Weddell |
geographic_facet |
Antarctic Southern Ocean Weddell Sea Weddell |
genre |
Antarc* Antarctic Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Southern Ocean Weddell Sea |
op_relation |
Huang, Huang; Gutjahr, Marcus; Eisenhauer, Anton; Kuhn, Gerhard (2020): No detectable Weddell Sea Antarctic Bottom Water export during the Last and Penultimate Glacial Maximum. Nature Communications, 11(1), https://doi.org/10.1038/s41467-020-14302-3 https://doi.pangaea.de/10.1594/PANGAEA.909084 https://doi.org/10.1594/PANGAEA.909084 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.909084 https://doi.org/10.1038/s41467-020-14302-3 |
_version_ |
1766276417849393152 |