Journal article Open Access

Evidence of 6 000-Year Periodicity in Reconstructed Sunspot Numbers

Xapsos, M. A.; Burke, E. A.


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{
  "description": "Reconstructed sunspot data are available that extend solar activity back to 11 360 years before the present. We have examined these data using Hurst analysis, a moving average filter, and Fourier analysis. All of the procedures indicate the presence of a long term (\u22486 000 year) cycle not previously reported. A number of shorter cycles formerly identified in the literature by using Fourier analysis, Bayes methods, and maximum entropy methods were also detected in the reconstructed sunspot data.", 
  "license": "https://creativecommons.org/publicdomain/zero/1.0/legalcode", 
  "creator": [
    {
      "@type": "Person", 
      "name": "Xapsos, M. A."
    }, 
    {
      "@type": "Person", 
      "name": "Burke, E. A."
    }
  ], 
  "headline": "Evidence of 6 000-Year Periodicity in Reconstructed Sunspot Numbers", 
  "image": "https://zenodo.org/static/img/logos/zenodo-gradient-round.svg", 
  "datePublished": "2009-05-27", 
  "url": "https://zenodo.org/record/1232840", 
  "@context": "https://schema.org/", 
  "identifier": "https://doi.org/10.1007/s11207-009-9380-3", 
  "@id": "https://doi.org/10.1007/s11207-009-9380-3", 
  "@type": "ScholarlyArticle", 
  "name": "Evidence of 6 000-Year Periodicity in Reconstructed Sunspot Numbers"
}
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