Wavelet-analysis of series of observations of relative sunspot numbers. The dependence of the periods of cyclic activity on the time at different time scales

Autor:	Borisov, A. A., Bruevich, E. A., Bruevich, V. V., Rozgacheva, I. K., Shimanovskaya, E. V.
Rok vydání:	2015
Předmět:	Astrophysics - Solar and Stellar Astrophysics
Druh dokumentu:	Working Paper
Popis:	We applied the method of continuous wavelet-transform to high-quality time-frequency analysis to the sets of observations of relative sunspot numbers. Wavelet analysis of these data reveals the following pattern: at the same time there are several activity cycles whose periods vary widely from the quasi biennial up to the centennial period. These relatively low-frequency periodic variations of the solar activity gradually change the values of periods of different cycles in time. This phenomenon can be observed in every cycle of activity. Comment: 11 pages, 5 figures. arXiv admin note: text overlap with arXiv:1304.4545
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1512.04098 Zobrazit plný text záznamu View this record from Arxiv