Hostname: page-component-8448b6f56d-wq2xx Total loading time: 0 Render date: 2024-04-19T13:30:29.615Z Has data issue: false hasContentIssue false
  • English
  • Français

AMS 14C Study of Transient Events and of the Ventilation Rate of the Pacific Intermediate Water During the Last Deglaciation

Published online by Cambridge University Press:  18 July 2016

Jean-Claude Duplessy ,
Maurice Arnold ,
Edouard Bard ,
Anne Juillet-Leclerc ,
Nejib Kallel  and
Laurent Labeyrie
Jean-Claude Duplessy
Affiliation:
Centre des Faibles Radioactivités, Laboratoire mixte CNRS-CEA F-91198 Gif-sur-Yvette Cedex, France
Maurice Arnold
Affiliation:
Centre des Faibles Radioactivités, Laboratoire mixte CNRS-CEA F-91198 Gif-sur-Yvette Cedex, France
Edouard Bard
Affiliation:
Centre des Faibles Radioactivités, Laboratoire mixte CNRS-CEA F-91198 Gif-sur-Yvette Cedex, France
Anne Juillet-Leclerc
Affiliation:
Centre des Faibles Radioactivités, Laboratoire mixte CNRS-CEA F-91198 Gif-sur-Yvette Cedex, France
Nejib Kallel
Affiliation:
Centre des Faibles Radioactivités, Laboratoire mixte CNRS-CEA F-91198 Gif-sur-Yvette Cedex, France
Laurent Labeyrie
Affiliation:
Centre des Faibles Radioactivités, Laboratoire mixte CNRS-CEA F-91198 Gif-sur-Yvette Cedex, France
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

14C analysis of monospecific samples of planktonic and benthic foraminifera were performed in deep-sea sediment cores from the Atlantic and Pacific Oceans by Accelerator Mass Spectrometry (AMS). These measurements demonstrate that the Younger Dryas cold event, first described in the north Atlantic, is also present at the same time in the north Pacific Ocean. The comparison of the 14C ages of planktonic and benthic foraminifera from the same sediment level in two Pacific cores shows that the ventilation time of the Pacific Ocean was greater than today during the last ice age, but significantly less than today during the deglaciation.

Type
II. Carbon Cycle in the Environment
Information
Radiocarbon , Volume 31 , Issue 3: June 20-25, 1988 Dubrovnik, Yugoslavia , 1989 , pp. 493 - 502
Copyright
Copyright © The American Journal of Science 

References

Arnold, M, Bard, E, Maurice, P and Duplessy, J C, 1987, 14C dating with the Gif-sur-Yvette Tandetron accelerator: status report: Nuclear Instruments & Methods, v B 29, p 120–123.Google Scholar
Bard, E, Arnold, M, Duprat, J, Moyes, J and Duplessy, J C, 1987a, Reconstruction of the last deglaciation: deconvolved records of d18O profiles, micropaleontological variations and accelerator mass spectrometric 14C dating: Climate Dynamics, v 1, p 101–112.CrossRefGoogle Scholar
Bard, E, Arnold, M, Maurice, P, Duprat, J, Moyes, J and Duplessy, J C, 1987b, Retreat velocity of the North Atlantic polar front during the last deglaciation determined by 14C accelerator mass spectrometry: Nature, v 328, p 791–794.Google Scholar
Broecker, W S, Andrée, M, Klas, M, Bonani, G, Wölfli, W and Oeschger, H, 1988a, New evidence from the South China Sea for an abrupt termination of the last glacial period: Nature, v 333, p 156–158.Google Scholar
Broecker, W S, Andrée, M, Wölfli, W, Oeschger, H, Bonani, G, Kennett, J and Peteet, D, 1988b, The chronology of the last deglaciation: implications to the cause of the Younger Dryas event: Paleoceanography, v 3, p 1–19.Google Scholar
Broecker, W S, Mix, A, Andrée, M and Oeschger, H, 1984, Radiocarbon measurements on coexisting benthic and planktonic foraminifera shells: potential for reconstructing ocean ventilation times over the past 20,000 years: Nuclear Instruments & Methods, v B5, p 331–339.Google Scholar
Duplessy, J C, Arnold, M, Maurice, P, Bard, E, Duprat, J and Moyes, J, 1986, Direct dating of the oxygen-isotope record of the last deglaciation by 14C accelerator mass spectrometry: Nature, v 320, p 350–352.Google Scholar
Duplessy, J C, Delibrias, G, Turon, J L, Pujol, C and Duprat, J, 1981, Deglacial warming of the Northeastern Atlantic Ocean: correlation with the paleoclimatic evolution of the European continent: Palaeogeogr, Palaeoclimat, Palaeoecol, v 35, p 121–144.Google Scholar
Duplessy, J C and Shackleton, N J, 1985, Response of global deep water circulation to Earth's climatic change 135,000–107,000 years ago: Nature, v 316, p 500–507.Google Scholar
Duplessy, J C, Shackleton, N J, Fairbanks, R G, Labeyrie, L, Oppo, D and Kallel, N, 1988, Deep water source variations during the last climatic cycle and their impact on the global deep water circulation: Paleoceanography, v 3, p 343–360.Google Scholar
Kallel, N, Labeyrie, L D, Juillet-Leclerc, A and Duplessy, J C, 1988, A deep hydrological front between intermediate and deep water masses in the glacial Indian Ocean: Nature, v 333, p 651–655.CrossRefGoogle Scholar
Pichon, J J, Labracherie, M, Labeyrie, L and Duprat, J, 1987, Transfer functions between diatom assemblages and surface hydrology in the Southern Ocean: Palaeogeogr, Palaeoclimat, Palaeoecol, v 61, 79–95.CrossRefGoogle Scholar
Ruddiman, W F and McIntyre, A, 1981, The North Atlantic Ocean during the last deglaciation: Palaeogeogr, Palaeoclimat, Palaeoecol, v 35, 145–214.Google Scholar
Shackleton, N J, Duplessy, J C, Arnold, M, Maurice, P, Hall, M and Cartlidge, J, 1988, Radiocarbon age of last glacial Pacific deep water: Nature, v 335, 708–711.Google Scholar
Thompson, P R and Shackleton, N J, 1980, North Pacific oceanography: late Quaternary coiling variations of planktonic foraminifer Neogloboquadrina pachyderma : Nature, v 287, p 829–833.Google Scholar