Abstract
Oxygen isotope analysis of anew ice core from the crest of the Greenland ice sheet reveals a climatic record of the past 1,420 years. Climatic changes of medium frequencies are in phase with corresponding changes in Iceland and England, whilst long-term changes at mid Atlantic longitudes are out of phase with Europe and North America. Reconciliation with Norse history suggests a strong climatic impact, and a parallel is drawn to the present critical situation of the human society.
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Dansgaard, W., Johnsen, S., Reeh, N. et al. Climatic changes, Norsemen and modern man. Nature 255, 24–28 (1975). https://doi.org/10.1038/255024a0
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DOI: https://doi.org/10.1038/255024a0
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