The Wavelet Analysis of the Solar and Cosmic-Ray Data

Details The Wavelet Analysis of the Solar and Cosmic-Ray Data The Wavelet Analysis of the Solar and Cosmic-Ray Data

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001ssrv...97..359r&link_type=abstract

Space Science Reviews, v. 97, Issue 1/4, p. 359-362 (2001).

Physics

8

Scientific paper

Results of the wavelet power spectrum (WPS) analysis(which covers the 1969 1998 years) obtained using the daily data of the following parameters: (i) the Mt. Wilson Magnetic Plage Strength index (MPSI), (ii) the solar LDE-type flare index (LDE-FI) and (iii) the Calgary cosmic-ray (CR) intensity, are reported for periods ranging between 64 and 1024 days. The temporal distribution of the WPS during the last three solar activity cycles is extremely discontinuous. A clear resemblance between the CR and LDE-FI WPS is obtained only for the 22nd solar activity cycle. Nevertheless, the CR multiperiod peak, observed in 1982, can well be identified with the WPS peaks obtained in both solar parameters under consideration. In the 21st cycle, we found significant the MPSI periods around 850 880 days (2.3 2.4 yr), while such periods are present in the LDE-FI data of the 22nd cycle. In the CR data we discerned a net periodicity around 650 days (1.7 yr).

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