𝔖 Bobbio Scriptorium
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Periodicities in solar activity

✍ Scribed by T. W. Cole


Publisher
Springer
Year
1973
Tongue
English
Weight
484 KB
Volume
30
Category
Article
ISSN
0038-0938

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πŸ“œ SIMILAR VOLUMES


Short periodicities in solar activity
✍ K. Ramanuja Rao πŸ“‚ Article πŸ“… 1973 πŸ› Springer 🌐 English βš– 261 KB

Several indices of solar activity are subjected to a high pass filter and power spectral analysis to verify the existance of shorter per~di.cit~j..n...solar act iviLy:yhgu~h all these indices show the presence of short periodicities, above 95 ~ confidence level, the common indices like sunspot numbe

Intermediate-term periodicities in solar
✍ R. Oliver; M. Carbonell; J. L. Ballester πŸ“‚ Article πŸ“… 1992 πŸ› Springer 🌐 English βš– 731 KB

The presence of intermediate-term periodicities in solar activity, at approximately 323 and 540 days, has been claimed by different authors. In this paper, we have performed a search for them in the historical records of two main indices of solar activity, namely, the daily sunspot areas (cycles 12-