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Speculations about the Next Glaciation

  • W. Dansgaard, S.J. Johnsen, H.B. Clausen (a1) and C.C. Langway (a2)
Abstract

A spectacular 10‰ drop in the 18O16O ratio (δ) in precipitation indicative of rapid cooling occurred at Camp Century, Greenland, 89,500 y.a. The timing is based upon an assumption of δ periodicity being constant in time. Onset of the Wisconsin pleniglacial is reflected by 6‰ δ drop at 73,000 BP. Similar event might have occurred 109,000 y.a., but the core at corresponding depth is missing. Could it also happen today?

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References
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Dansgaard W. Johnsen S.J. Clausen H.B. Langway C.C. 1971 Climatic record revealed by the Camp Century ice core Turekian K.K. The Cenozoic Glacial Ages Yale Univ. Press 37 56
Goldthwaith R.P. Dreimanis A. Forsyth J.L. Karrow P.F. White G.W. 1965 Pleistocene deposits of the Erie Lobe Wright H.E. Jr. Frey D.G. The Quaternary of the United States Princeton Univ. Press 85 97
Johnsen S.J. Dansgaard W. Clausen H.B. Langway C.C. 1972 Oxygen isotope profiles through the Antarctic and Greenland ice sheets Nature 235 229 234
Broecker W.S. 1968 In defense of the astronomical theory of glaciation Meteorological Monographs 2 No. 30
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Quaternary Research
  • ISSN: 0033-5894
  • EISSN: 1096-0287
  • URL: /core/journals/quaternary-research
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