Last Glacial Maximum carbon isotopic composition
We present Holocene and last glacial maximum (LGM) oxygen and carbon isotope measurements on Planulina wuellerstorfi in six southeast Pacific cores. Sedimentation rates are low in this part of the ocean, and measurements were made on individual foraminiferal shells in order to identify the Holocene...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.856907 2023-05-15T17:25:25+02:00 Last Glacial Maximum carbon isotopic composition Matsumoto, Katsumi Lynch-Stieglitz, Jean MEDIAN LATITUDE: -40.074653 * MEDIAN LONGITUDE: -62.395523 * SOUTH-BOUND LATITUDE: -53.670000 * WEST-BOUND LONGITUDE: -123.100000 * NORTH-BOUND LATITUDE: -14.100000 * EAST-BOUND LONGITUDE: 140.166667 * DATE/TIME START: 1963-04-19T00:00:00 * DATE/TIME END: 1988-02-01T00:00:00 1999-01-14 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.856907 https://doi.org/10.1594/PANGAEA.856907 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.856907 https://doi.org/10.1594/PANGAEA.856907 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Matsumoto, Katsumi; Lynch-Stieglitz, Jean (1999): Similar glacial and Holocene deep water circulation inferred from southeast Pacific benthic foraminiferal carbon isotope composition. Paleoceanography, 14(2), 149-163, https://doi.org/10.1029/1998PA900028 Dataset 1999 ftpangaea https://doi.org/10.1594/PANGAEA.856907 https://doi.org/10.1029/1998PA900028 2023-01-20T07:33:39Z We present Holocene and last glacial maximum (LGM) oxygen and carbon isotope measurements on Planulina wuellerstorfi in six southeast Pacific cores. Sedimentation rates are low in this part of the ocean, and measurements were made on individual foraminiferal shells in order to identify the Holocene and glacial individuals on the basis of their extreme d18O. The new d13C data were combined with previous P. wuellerstorfi data for interpretation of global thermohaline circulation. Data from the Southern Ocean were examined closely for regional coherency and a few anomalous d13C values suspected of having productivity overprint were removed. The resulting global d13C distributions and gradients indicate that the deep water circulation was similar during the Holocene and LGM. This interpretation brings d13C data to a better agreement with Cd/Ca data and marks a sharp contrast with a widely held view based on d13C measurements that the glacial Southern Ocean was the terminus of the thermohaline circulation. The proposed presence of glacial North Atlantic Deep Water does not necessarily contradict the postulated presence of Glacial North Atlantic Intermediate Water. Dataset North Atlantic Deep Water North Atlantic Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science Pacific Southern Ocean ENVELOPE(-123.100000,140.166667,-14.100000,-53.670000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
description |
We present Holocene and last glacial maximum (LGM) oxygen and carbon isotope measurements on Planulina wuellerstorfi in six southeast Pacific cores. Sedimentation rates are low in this part of the ocean, and measurements were made on individual foraminiferal shells in order to identify the Holocene and glacial individuals on the basis of their extreme d18O. The new d13C data were combined with previous P. wuellerstorfi data for interpretation of global thermohaline circulation. Data from the Southern Ocean were examined closely for regional coherency and a few anomalous d13C values suspected of having productivity overprint were removed. The resulting global d13C distributions and gradients indicate that the deep water circulation was similar during the Holocene and LGM. This interpretation brings d13C data to a better agreement with Cd/Ca data and marks a sharp contrast with a widely held view based on d13C measurements that the glacial Southern Ocean was the terminus of the thermohaline circulation. The proposed presence of glacial North Atlantic Deep Water does not necessarily contradict the postulated presence of Glacial North Atlantic Intermediate Water. |
format |
Dataset |
author |
Matsumoto, Katsumi Lynch-Stieglitz, Jean |
spellingShingle |
Matsumoto, Katsumi Lynch-Stieglitz, Jean Last Glacial Maximum carbon isotopic composition |
author_facet |
Matsumoto, Katsumi Lynch-Stieglitz, Jean |
author_sort |
Matsumoto, Katsumi |
title |
Last Glacial Maximum carbon isotopic composition |
title_short |
Last Glacial Maximum carbon isotopic composition |
title_full |
Last Glacial Maximum carbon isotopic composition |
title_fullStr |
Last Glacial Maximum carbon isotopic composition |
title_full_unstemmed |
Last Glacial Maximum carbon isotopic composition |
title_sort |
last glacial maximum carbon isotopic composition |
publisher |
PANGAEA |
publishDate |
1999 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.856907 https://doi.org/10.1594/PANGAEA.856907 |
op_coverage |
MEDIAN LATITUDE: -40.074653 * MEDIAN LONGITUDE: -62.395523 * SOUTH-BOUND LATITUDE: -53.670000 * WEST-BOUND LONGITUDE: -123.100000 * NORTH-BOUND LATITUDE: -14.100000 * EAST-BOUND LONGITUDE: 140.166667 * DATE/TIME START: 1963-04-19T00:00:00 * DATE/TIME END: 1988-02-01T00:00:00 |
long_lat |
ENVELOPE(-123.100000,140.166667,-14.100000,-53.670000) |
geographic |
Pacific Southern Ocean |
geographic_facet |
Pacific Southern Ocean |
genre |
North Atlantic Deep Water North Atlantic Southern Ocean |
genre_facet |
North Atlantic Deep Water North Atlantic Southern Ocean |
op_source |
Supplement to: Matsumoto, Katsumi; Lynch-Stieglitz, Jean (1999): Similar glacial and Holocene deep water circulation inferred from southeast Pacific benthic foraminiferal carbon isotope composition. Paleoceanography, 14(2), 149-163, https://doi.org/10.1029/1998PA900028 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.856907 https://doi.org/10.1594/PANGAEA.856907 |
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.856907 https://doi.org/10.1029/1998PA900028 |
_version_ |
1766116842726752256 |