Sedimentology, age models and stable isotope ratios of sediment cores from the equatorial Pacific
Based on detailed reconstructions of global distribution patterns, both paleoproductivity and the benthic d13C record of CO2, which is dissolved in the deep ocean, strongly differed between the Last Glacial Maximum and the Holocene. With the onset of Termination I about 15,000 years ago, the new (ex...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.803254 2024-09-15T18:35:32+00:00 Sedimentology, age models and stable isotope ratios of sediment cores from the equatorial Pacific Sarnthein, Michael Winn, Kyaw MEDIAN LATITUDE: 0.028039 * MEDIAN LONGITUDE: -90.629294 * SOUTH-BOUND LATITUDE: -18.594000 * WEST-BOUND LONGITUDE: -113.079000 * NORTH-BOUND LATITUDE: 13.120833 * EAST-BOUND LONGITUDE: -20.498000 * DATE/TIME START: 1981-05-31T00:00:00 * DATE/TIME END: 1983-03-14T00:00:00 1991 application/zip, 17 datasets https://doi.pangaea.de/10.1594/PANGAEA.803254 https://doi.org/10.1594/PANGAEA.803254 en eng PANGAEA Oppo, Delia W; Fairbanks, Richard G (1987): Variability in the deep and intermediate water circulation of the Atlantic Ocean during the past 25.000 years: Northern Hemisphere modulation of the Southern Ocean. Earth and Planetary Science Letters, 86(1), 1-15, https://doi.org/10.1016/0012-821X(87)90183-X Sarnthein, Michael; Winn, Kyaw (1990): Reconstruction of low and middle latitude export productivity, 30000 years BP to present: Implications for global carbon reservoirs. In: Schlesinger, ME (ed), Climate-Ocean Interaction, Kluwer Academic Publishers, Dordrecht, the Netherlands, 319-342, hdl:10013/epic.46001.d001 Sarnthein, Michael; Winn, Kyaw; Duplessy, Jean-Claude; Fontugne, Michel R (1988): Global variations of surface ocean productivity in low and mid latitudes: influence on CO2 reservoirs of the deep ocean and atmosphere during the last 21,000 years. Paleoceanography, 3(3), 361-399, https://doi.org/10.1029/PA003i003p00361 Shackleton, Nicholas J; Duplessy, Jean-Claude; Arnold, Maurice; Maurice, Pierre; Hall, Michael A; Cartlidge, Julie E (1988): Radiocarbon age of last glacial Pacific deep water. Nature, 335, 708-711, https://doi.org/10.1038/335708a0 https://doi.pangaea.de/10.1594/PANGAEA.803254 https://doi.org/10.1594/PANGAEA.803254 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Winn, Kyaw; Sarnthein, Michael; Erlenkeuser, Helmut (1991): d18O stratigraphy and chronology of Kiel sediment cores from the East Atlantic. Berichte-Reports, Geologisch-Paläontologisches Institut der Universität Kiel, 45, 99 pp, https://doi.org/10.2312/reports-gpi.1991.45 GIK/IfG Institute for Geosciences Christian Albrechts University Kiel dataset publication series 1991 ftpangaea https://doi.org/10.1594/PANGAEA.80325410.2312/reports-gpi.1991.4510.1016/0012-821X(87)90183-X10.1029/PA003i003p0036110.1038/335708a0 2024-07-24T02:31:21Z Based on detailed reconstructions of global distribution patterns, both paleoproductivity and the benthic d13C record of CO2, which is dissolved in the deep ocean, strongly differed between the Last Glacial Maximum and the Holocene. With the onset of Termination I about 15,000 years ago, the new (export) production of low- and mid-latitude upwelling cells started to decline by more than 2-4 Gt carbon/year. This reduction is regarded as a main factor leading to both the simultaneous rise in atmospheric CO2 as recorded in ice cores and, with a slight delay of more than 1000 years, to a large-scale gradual CO2 depletion of the deep ocean by about 650 Gt C. This estimate is based on an average increase in benthic d13C by 0.4-0.5 per mil. The decrease in new production also matches a clear 13C depletion of organic matter, possibly recording an end of extreme nutrient utilization in upwelling cells. As shown by Sarnthein et al., [1987], the productivity reversal appears to be triggered by a rapid reduction in the strength of meridional trades, which in turn was linked via a shrinking extent of sea ice to a massive increase in high-latitude insolation, i.e., to orbital forcing as primary cause. Other/Unknown Material Sea ice PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-113.079000,-20.498000,13.120833,-18.594000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
GIK/IfG Institute for Geosciences Christian Albrechts University Kiel |
spellingShingle |
GIK/IfG Institute for Geosciences Christian Albrechts University Kiel Sarnthein, Michael Winn, Kyaw Sedimentology, age models and stable isotope ratios of sediment cores from the equatorial Pacific |
topic_facet |
GIK/IfG Institute for Geosciences Christian Albrechts University Kiel |
description |
Based on detailed reconstructions of global distribution patterns, both paleoproductivity and the benthic d13C record of CO2, which is dissolved in the deep ocean, strongly differed between the Last Glacial Maximum and the Holocene. With the onset of Termination I about 15,000 years ago, the new (export) production of low- and mid-latitude upwelling cells started to decline by more than 2-4 Gt carbon/year. This reduction is regarded as a main factor leading to both the simultaneous rise in atmospheric CO2 as recorded in ice cores and, with a slight delay of more than 1000 years, to a large-scale gradual CO2 depletion of the deep ocean by about 650 Gt C. This estimate is based on an average increase in benthic d13C by 0.4-0.5 per mil. The decrease in new production also matches a clear 13C depletion of organic matter, possibly recording an end of extreme nutrient utilization in upwelling cells. As shown by Sarnthein et al., [1987], the productivity reversal appears to be triggered by a rapid reduction in the strength of meridional trades, which in turn was linked via a shrinking extent of sea ice to a massive increase in high-latitude insolation, i.e., to orbital forcing as primary cause. |
format |
Other/Unknown Material |
author |
Sarnthein, Michael Winn, Kyaw |
author_facet |
Sarnthein, Michael Winn, Kyaw |
author_sort |
Sarnthein, Michael |
title |
Sedimentology, age models and stable isotope ratios of sediment cores from the equatorial Pacific |
title_short |
Sedimentology, age models and stable isotope ratios of sediment cores from the equatorial Pacific |
title_full |
Sedimentology, age models and stable isotope ratios of sediment cores from the equatorial Pacific |
title_fullStr |
Sedimentology, age models and stable isotope ratios of sediment cores from the equatorial Pacific |
title_full_unstemmed |
Sedimentology, age models and stable isotope ratios of sediment cores from the equatorial Pacific |
title_sort |
sedimentology, age models and stable isotope ratios of sediment cores from the equatorial pacific |
publisher |
PANGAEA |
publishDate |
1991 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.803254 https://doi.org/10.1594/PANGAEA.803254 |
op_coverage |
MEDIAN LATITUDE: 0.028039 * MEDIAN LONGITUDE: -90.629294 * SOUTH-BOUND LATITUDE: -18.594000 * WEST-BOUND LONGITUDE: -113.079000 * NORTH-BOUND LATITUDE: 13.120833 * EAST-BOUND LONGITUDE: -20.498000 * DATE/TIME START: 1981-05-31T00:00:00 * DATE/TIME END: 1983-03-14T00:00:00 |
long_lat |
ENVELOPE(-113.079000,-20.498000,13.120833,-18.594000) |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Supplement to: Winn, Kyaw; Sarnthein, Michael; Erlenkeuser, Helmut (1991): d18O stratigraphy and chronology of Kiel sediment cores from the East Atlantic. Berichte-Reports, Geologisch-Paläontologisches Institut der Universität Kiel, 45, 99 pp, https://doi.org/10.2312/reports-gpi.1991.45 |
op_relation |
Oppo, Delia W; Fairbanks, Richard G (1987): Variability in the deep and intermediate water circulation of the Atlantic Ocean during the past 25.000 years: Northern Hemisphere modulation of the Southern Ocean. Earth and Planetary Science Letters, 86(1), 1-15, https://doi.org/10.1016/0012-821X(87)90183-X Sarnthein, Michael; Winn, Kyaw (1990): Reconstruction of low and middle latitude export productivity, 30000 years BP to present: Implications for global carbon reservoirs. In: Schlesinger, ME (ed), Climate-Ocean Interaction, Kluwer Academic Publishers, Dordrecht, the Netherlands, 319-342, hdl:10013/epic.46001.d001 Sarnthein, Michael; Winn, Kyaw; Duplessy, Jean-Claude; Fontugne, Michel R (1988): Global variations of surface ocean productivity in low and mid latitudes: influence on CO2 reservoirs of the deep ocean and atmosphere during the last 21,000 years. Paleoceanography, 3(3), 361-399, https://doi.org/10.1029/PA003i003p00361 Shackleton, Nicholas J; Duplessy, Jean-Claude; Arnold, Maurice; Maurice, Pierre; Hall, Michael A; Cartlidge, Julie E (1988): Radiocarbon age of last glacial Pacific deep water. Nature, 335, 708-711, https://doi.org/10.1038/335708a0 https://doi.pangaea.de/10.1594/PANGAEA.803254 https://doi.org/10.1594/PANGAEA.803254 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.80325410.2312/reports-gpi.1991.4510.1016/0012-821X(87)90183-X10.1029/PA003i003p0036110.1038/335708a0 |
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1810478728080261120 |