• A 6-ka climatic cycle during at least the last 50,000 years. 

      Olsen, Lars; Hammer, Øyvind (NGU Bulletin (445), Journal article, 2005)
      The distribution of 264 dates in the interval 12,000-50,000 years BP from terrestrial and raised marine sediments from ic-free intervals in Norway shows a fairly strong cycle with a period of c.6 thousand years. The cycle, ...