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Sarnthein, Michael; Winn, Kyaw (1991): Sedimentology, age models and stable isotope ratios of sediment cores from the equatorial Pacific [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.803254, 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

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Abstract:
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.
Related to:
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
Project(s):
Institute for Geosciences, Christian Albrechts University, Kiel (GIK/IfG)
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
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
17 datasets

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Datasets listed in this publication series

  1. Sarnthein, M; Winn, K (1991): Age model of sediment core EN066-38PG. https://doi.org/10.1594/PANGAEA.357183
  2. Sarnthein, M; Winn, K (1991): Age model of sediment core SO26-12KA. https://doi.org/10.1594/PANGAEA.803246
  3. Sarnthein, M; Winn, K (1991): Stable isotope values of foraminifera from sediment core SO26-12KA. https://doi.org/10.1594/PANGAEA.803247
  4. Sarnthein, M; Winn, K (1991): Age model of sediment core SO26-47KA. https://doi.org/10.1594/PANGAEA.803248
  5. Sarnthein, M; Winn, K (1991): Stable isotope ratios of foraminifera from sediment core SO26-47KA. https://doi.org/10.1594/PANGAEA.803252
  6. Sarnthein, M; Winn, K (1991): Age model of sediment core SO26-58KA. https://doi.org/10.1594/PANGAEA.803740
  7. Sarnthein, M; Winn, K (1991): Carbon and oxygen isotope measurements on planktonic and benthic foraminifera, organic carbon and dry density in equatorial Pacific core SO26-58KA. https://doi.org/10.1594/PANGAEA.803741
  8. Sarnthein, M; Winn, K (1991): Age model of sediment core SO26-90KA. https://doi.org/10.1594/PANGAEA.803733
  9. Sarnthein, M; Winn, K (1991): Carbon and oxygen isotope measurements on planktonic and benthic foraminifera, organic carbon and dry density in equatorial Pacific core SO26-90KA. https://doi.org/10.1594/PANGAEA.803734
  10. Sarnthein, M; Winn, K (1991): Age model of equatorial Pacific core SO26-96KA. https://doi.org/10.1594/PANGAEA.804567
  11. Sarnthein, M; Winn, K (1991): Carbon and oxygen isotope measurements on Globigerinoides ruber (white) and Cibicides wuellerstorfi, organic carbon and dry density in equatorial Pacific core SO26-96. https://doi.org/10.1594/PANGAEA.804568
  12. Sarnthein, M; Winn, K (1991): Age model of equatorial Pacific core SO26-127KA. https://doi.org/10.1594/PANGAEA.804569
  13. Sarnthein, M; Winn, K (1991): Carbon and oxygen isotope measurements on Globigerinoides dutertrei, G. dutertrei dextral and Cibicides wuellerstorfi, organic carbon and dry density in equatorial Pacific core SO 26-127. https://doi.org/10.1594/PANGAEA.804570
  14. Sarnthein, M; Winn, K (1991): Age model of sediment core SO26-131. https://doi.org/10.1594/PANGAEA.805123
  15. Sarnthein, M; Winn, K (1991): Carbon and oxygen isotope measurements on Globoquadrina dutertrei dextral and Cibicides wuellerstorfi, dry density, carbonate and organic carbon contents in equatorial Pacific core SO26-131. https://doi.org/10.1594/PANGAEA.805124
  16. Sarnthein, M; Winn, K (1991): Age model of sediment core SO26-189KA. https://doi.org/10.1594/PANGAEA.805128
  17. Sarnthein, M; Winn, K (1991): Carbon and oxygen isotope measurements on Globigerinoides ruber white and Cibicides wuellerstorfi, dry density, carbonate and organic carbon contents in southeast tropical Pacific core SO26-189. https://doi.org/10.1594/PANGAEA.805129