Solar Physics

, Volume 163, Issue 2, pp 259–266 | Cite as

Chaotic behavior of the north-south asymmetry of sunspots?

  • Shinichi Watari


North-south asymmetry in the distribution of sunspots was examined. Weak correlations between north-south asymmetry and sunspot number were found in several time lags. Higuchi's fractal dimension (1988) was calculated to evaluate irregularity in north-south asymmetry. The fractal dimension obtained is 1.90 ± 0.01 and this implies that the north-south asymmetry is highly irregular. The method of Sugihara and May (1990), based on the nonlinear prediction method, was used to distinguish between deterministic chaos and noise. The results do not confirm the idea that north-south asymmetry is an example of deterministic chaos.


Fractal Dimension Prediction Method Weak Correlation Sunspot Number Chaotic Behavior 
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Copyright information

© Kluwer Academic Publishers 1996

Authors and Affiliations

  • Shinichi Watari
    • 1
  1. 1.Communications Research LaboratoryTokyoJapan

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