Nd and Pb isotopes in ferromanganese crusts
The intensity of North Atlantic Deep Water (NADW) production has been one of the most important parameters controlling the global thermohaline ocean circulation system and climate. Here we present a new approach to reconstruct the overall strength of NADW export from the North Atlantic to the Southe...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.735989 2023-05-15T17:13:49+02:00 Nd and Pb isotopes in ferromanganese crusts Frank, Martin Whiteley, N Kasten, Sabine Hein, James R O'Nions, R K MEDIAN LATITUDE: -44.672657 * MEDIAN LONGITUDE: 16.417909 * SOUTH-BOUND LATITUDE: -64.966700 * WEST-BOUND LONGITUDE: -91.266700 * NORTH-BOUND LATITUDE: -27.966700 * EAST-BOUND LONGITUDE: 126.742000 * DATE/TIME START: 1970-12-03T00:00:00 * DATE/TIME END: 1970-12-03T00:00:00 2002-03-31 application/zip, 7 datasets https://doi.pangaea.de/10.1594/PANGAEA.735989 https://doi.org/10.1594/PANGAEA.735989 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.735989 https://doi.org/10.1594/PANGAEA.735989 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Frank, Martin; Whiteley, N; Kasten, Sabine; Hein, James R; O'Nions, R K (2002): North Atlantic Deep Water export to the Southern Ocean over the past 14 Myr: Evidence from Nd and Pb isotopes in ferromanganese crusts. Paleoceanography, 17(2), 1022, https://doi.org/10.1029/2000PA000606 ANTIPODE ANTP-109D-C Atlantis_II_D4-1 BAS-DR153 Dredge DRG gcmd1 Hand drill HDRILL Indian Ocean Melville Moana Wave MW8801 MW8801-18 TBD463-6854-6 VULCAN-5-34-42D Dataset 2002 ftpangaea https://doi.org/10.1594/PANGAEA.735989 https://doi.org/10.1029/2000PA000606 2023-01-20T07:31:43Z The intensity of North Atlantic Deep Water (NADW) production has been one of the most important parameters controlling the global thermohaline ocean circulation system and climate. Here we present a new approach to reconstruct the overall strength of NADW export from the North Atlantic to the Southern Ocean over the past 14 Myr applying the deep water Nd and Pb isotope composition as recorded by ferromanganese crusts and nodules. We present the first long-term Nd and Pb isotope time series for deep Southern Ocean water masses, which are compared with previously published time series for NADW from the NW Atlantic Ocean. These data suggest a continuous and strong export of NADW, or a precursor of it, into the Southern Ocean between 14 and 3 Ma. An increasing difference in Nd and Pb isotope compositions between the NW Atlantic and the Southern Ocean over the past 3 Myr gives evidence for a progressive overall reduction of NADW export since the onset of Northern Hemisphere glaciation (NHG). The Nd isotope data allow us to assess at least semiquantitatively that the amount of this reduction has been in the range between 14 and 37% depending on location. Dataset NADW North Atlantic Deep Water North Atlantic Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science Indian Southern Ocean ENVELOPE(-91.266700,126.742000,-27.966700,-64.966700) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
ANTIPODE ANTP-109D-C Atlantis_II_D4-1 BAS-DR153 Dredge DRG gcmd1 Hand drill HDRILL Indian Ocean Melville Moana Wave MW8801 MW8801-18 TBD463-6854-6 VULCAN-5-34-42D |
spellingShingle |
ANTIPODE ANTP-109D-C Atlantis_II_D4-1 BAS-DR153 Dredge DRG gcmd1 Hand drill HDRILL Indian Ocean Melville Moana Wave MW8801 MW8801-18 TBD463-6854-6 VULCAN-5-34-42D Frank, Martin Whiteley, N Kasten, Sabine Hein, James R O'Nions, R K Nd and Pb isotopes in ferromanganese crusts |
topic_facet |
ANTIPODE ANTP-109D-C Atlantis_II_D4-1 BAS-DR153 Dredge DRG gcmd1 Hand drill HDRILL Indian Ocean Melville Moana Wave MW8801 MW8801-18 TBD463-6854-6 VULCAN-5-34-42D |
description |
The intensity of North Atlantic Deep Water (NADW) production has been one of the most important parameters controlling the global thermohaline ocean circulation system and climate. Here we present a new approach to reconstruct the overall strength of NADW export from the North Atlantic to the Southern Ocean over the past 14 Myr applying the deep water Nd and Pb isotope composition as recorded by ferromanganese crusts and nodules. We present the first long-term Nd and Pb isotope time series for deep Southern Ocean water masses, which are compared with previously published time series for NADW from the NW Atlantic Ocean. These data suggest a continuous and strong export of NADW, or a precursor of it, into the Southern Ocean between 14 and 3 Ma. An increasing difference in Nd and Pb isotope compositions between the NW Atlantic and the Southern Ocean over the past 3 Myr gives evidence for a progressive overall reduction of NADW export since the onset of Northern Hemisphere glaciation (NHG). The Nd isotope data allow us to assess at least semiquantitatively that the amount of this reduction has been in the range between 14 and 37% depending on location. |
format |
Dataset |
author |
Frank, Martin Whiteley, N Kasten, Sabine Hein, James R O'Nions, R K |
author_facet |
Frank, Martin Whiteley, N Kasten, Sabine Hein, James R O'Nions, R K |
author_sort |
Frank, Martin |
title |
Nd and Pb isotopes in ferromanganese crusts |
title_short |
Nd and Pb isotopes in ferromanganese crusts |
title_full |
Nd and Pb isotopes in ferromanganese crusts |
title_fullStr |
Nd and Pb isotopes in ferromanganese crusts |
title_full_unstemmed |
Nd and Pb isotopes in ferromanganese crusts |
title_sort |
nd and pb isotopes in ferromanganese crusts |
publisher |
PANGAEA |
publishDate |
2002 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.735989 https://doi.org/10.1594/PANGAEA.735989 |
op_coverage |
MEDIAN LATITUDE: -44.672657 * MEDIAN LONGITUDE: 16.417909 * SOUTH-BOUND LATITUDE: -64.966700 * WEST-BOUND LONGITUDE: -91.266700 * NORTH-BOUND LATITUDE: -27.966700 * EAST-BOUND LONGITUDE: 126.742000 * DATE/TIME START: 1970-12-03T00:00:00 * DATE/TIME END: 1970-12-03T00:00:00 |
long_lat |
ENVELOPE(-91.266700,126.742000,-27.966700,-64.966700) |
geographic |
Indian Southern Ocean |
geographic_facet |
Indian Southern Ocean |
genre |
NADW North Atlantic Deep Water North Atlantic Southern Ocean |
genre_facet |
NADW North Atlantic Deep Water North Atlantic Southern Ocean |
op_source |
Supplement to: Frank, Martin; Whiteley, N; Kasten, Sabine; Hein, James R; O'Nions, R K (2002): North Atlantic Deep Water export to the Southern Ocean over the past 14 Myr: Evidence from Nd and Pb isotopes in ferromanganese crusts. Paleoceanography, 17(2), 1022, https://doi.org/10.1029/2000PA000606 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.735989 https://doi.org/10.1594/PANGAEA.735989 |
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.735989 https://doi.org/10.1029/2000PA000606 |
_version_ |
1766071010923118592 |