Volume 10 Issue 1
Jan.  1990
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Shen Mei, Yang Pei-cai. DIMENSION AND PREDICTION OF THE SUNSPOT[J]. Chinese Journal of Space Science, 1990, 10(1): 1-7. doi: 10.11728/cjss1990.01.001
Citation: Shen Mei, Yang Pei-cai. DIMENSION AND PREDICTION OF THE SUNSPOT[J]. Chinese Journal of Space Science, 1990, 10(1): 1-7. doi: 10.11728/cjss1990.01.001

DIMENSION AND PREDICTION OF THE SUNSPOT

doi: 10.11728/cjss1990.01.001
  • Received Date: 1989-05-22
  • Rev Recd Date: 1900-01-01
  • Publish Date: 1990-01-24
  • In this paper the 9 days meaned series of the dayly international sunspot numbers from 1932-1982 are used to analyse the dynamical properties of the sunspots evolution. It is concluded that the sunspot is a complex dynamical system which should be described by at least seven independent variables, and that its correlation dimension is 6.3 ± 0.1, the 2-order Renyi entropy and the maximum Lyapunov exponent are respectively (0.37 ±0.02) bit/yr. The predictable time scales that they indicate, namely, the time for initial error becoming 2 times larger, are (2.7±0.2) years and (2.9±0.1) years, respectively.

     

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