Deep thermohaline Circulation in the low-latitude Atlantic during the Last Glacial ...

Present-day low-latitude eastern and western Atlantic basins are geochemically distinct below the sill depth of the Mid-Atlantic Ridge. While Antarctic Bottom Water (AABW) circulates freely in the western Atlantic, flow into the eastern Atlantic is restricted below 4 km which results in filling the...

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Bibliographic Details
Main Authors: Beveridge, N, Elderfield, Henry, Shackleton, Nicholas J
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA 1995
Subjects:
M25
Online Access:https://dx.doi.org/10.1594/pangaea.692007
https://doi.pangaea.de/10.1594/PANGAEA.692007
id ftdatacite:10.1594/pangaea.692007
record_format openpolar
spelling ftdatacite:10.1594/pangaea.692007 2024-09-15T17:47:20+00:00 Deep thermohaline Circulation in the low-latitude Atlantic during the Last Glacial ... Beveridge, N Elderfield, Henry Shackleton, Nicholas J 1995 application/zip https://dx.doi.org/10.1594/pangaea.692007 https://doi.pangaea.de/10.1594/PANGAEA.692007 en eng PANGAEA https://dx.doi.org/10.1029/94pa03353 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 Kasten corer CD53 M25 Charles Darwin Meteor 1964 Biogeochemical Ocean Flux Study BOFS Joint Global Ocean Flux Study JGOFS article Collection Supplementary Publication Series of Datasets 1995 ftdatacite https://doi.org/10.1594/pangaea.69200710.1029/94pa03353 2024-08-01T10:59:11Z Present-day low-latitude eastern and western Atlantic basins are geochemically distinct below the sill depth of the Mid-Atlantic Ridge. While Antarctic Bottom Water (AABW) circulates freely in the western Atlantic, flow into the eastern Atlantic is restricted below 4 km which results in filling the abyssal depths of this basin with water of geochemical similarity to nutrient depleted North Atlantic Deep Water. Using carbon isotopes and Cd/Ca ratios in benthic foraminifera we reconstruct the geochemistry of these basins during the last glacial maximum. Results indicate that deep eastern and western Atlantic basins became geochemically identical during the last glacial. This was achieved by shoaling of the upper surface of AABW above the sill depth of the Mid-Atlantic Ridge, which allowed bottom waters in both basins to be filled with the same water mass. Although AABW became the dominant water mass in the deep eastern Atlantic basin during the glacial, Holocene-glacial delta13C-PO4 shifts in this basin are in ... : Supplement to: Beveridge, N; Elderfield, Henry; Shackleton, Nicholas J (1995): Deep thermohaline circulation in the low-latitude Atlantic during the last glacial. Paleoceanography, 10(3), 643-660 ... Article in Journal/Newspaper Antarc* Antarctic North Atlantic Deep Water North Atlantic DataCite
institution Open Polar
collection DataCite
op_collection_id ftdatacite
language English
topic Kasten corer
CD53
M25
Charles Darwin
Meteor 1964
Biogeochemical Ocean Flux Study BOFS
Joint Global Ocean Flux Study JGOFS
spellingShingle Kasten corer
CD53
M25
Charles Darwin
Meteor 1964
Biogeochemical Ocean Flux Study BOFS
Joint Global Ocean Flux Study JGOFS
Beveridge, N
Elderfield, Henry
Shackleton, Nicholas J
Deep thermohaline Circulation in the low-latitude Atlantic during the Last Glacial ...
topic_facet Kasten corer
CD53
M25
Charles Darwin
Meteor 1964
Biogeochemical Ocean Flux Study BOFS
Joint Global Ocean Flux Study JGOFS
description Present-day low-latitude eastern and western Atlantic basins are geochemically distinct below the sill depth of the Mid-Atlantic Ridge. While Antarctic Bottom Water (AABW) circulates freely in the western Atlantic, flow into the eastern Atlantic is restricted below 4 km which results in filling the abyssal depths of this basin with water of geochemical similarity to nutrient depleted North Atlantic Deep Water. Using carbon isotopes and Cd/Ca ratios in benthic foraminifera we reconstruct the geochemistry of these basins during the last glacial maximum. Results indicate that deep eastern and western Atlantic basins became geochemically identical during the last glacial. This was achieved by shoaling of the upper surface of AABW above the sill depth of the Mid-Atlantic Ridge, which allowed bottom waters in both basins to be filled with the same water mass. Although AABW became the dominant water mass in the deep eastern Atlantic basin during the glacial, Holocene-glacial delta13C-PO4 shifts in this basin are in ... : Supplement to: Beveridge, N; Elderfield, Henry; Shackleton, Nicholas J (1995): Deep thermohaline circulation in the low-latitude Atlantic during the last glacial. Paleoceanography, 10(3), 643-660 ...
format Article in Journal/Newspaper
author Beveridge, N
Elderfield, Henry
Shackleton, Nicholas J
author_facet Beveridge, N
Elderfield, Henry
Shackleton, Nicholas J
author_sort Beveridge, N
title Deep thermohaline Circulation in the low-latitude Atlantic during the Last Glacial ...
title_short Deep thermohaline Circulation in the low-latitude Atlantic during the Last Glacial ...
title_full Deep thermohaline Circulation in the low-latitude Atlantic during the Last Glacial ...
title_fullStr Deep thermohaline Circulation in the low-latitude Atlantic during the Last Glacial ...
title_full_unstemmed Deep thermohaline Circulation in the low-latitude Atlantic during the Last Glacial ...
title_sort deep thermohaline circulation in the low-latitude atlantic during the last glacial ...
publisher PANGAEA
publishDate 1995
url https://dx.doi.org/10.1594/pangaea.692007
https://doi.pangaea.de/10.1594/PANGAEA.692007
genre Antarc*
Antarctic
North Atlantic Deep Water
North Atlantic
genre_facet Antarc*
Antarctic
North Atlantic Deep Water
North Atlantic
op_relation https://dx.doi.org/10.1029/94pa03353
op_rights Creative Commons Attribution 3.0 Unported
https://creativecommons.org/licenses/by/3.0/legalcode
cc-by-3.0
op_doi https://doi.org/10.1594/pangaea.69200710.1029/94pa03353
_version_ 1810496471534927872