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Climatic changes, Norsemen and modern man

Dansgaard, W., Johnsen, S.J., Reech, N., Gundestrup, N., Clausen, H.B. and Hammer, C.U. 1975; Nature 255: 24-28


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.