Title: Latitudinal and temporal distribution of the solar photospheric magnetic flux periodicities during 1975 - 200 years
Author: Anna Antalová
Affil: Astronomical Institute of the Slovak Academy of Sciences, 059 60 Tatranská Lomnica, The Slovak Republic
Email: antalova@ta3.sk
Authors: Ján Rybák
Abstract: The distribution of the intermediate-term solar
periodicities in the heliographic latitudes from
the equator up to latitude 
has been
analysed, for the epoch 1975 - 2000, using NSO/Kitt
Peak synoptic data. Results of the wavelet power spectrum
(WPS) analysis of the total magnetic flux (averaged
over the separate Carrington rotation) are reported, for
periods ranging between 64 and 1024 days. The
northern and southern hemispheres of the Sun are
divided into 11 latitudinal zones, 
wide
each. The temporal distribution of WPS of all periods
in the 
- latitudinal
zones strongly supports the dual-peaked structure of the solar cycle
maximum (the best is zone from to 
), which seems to be the proper phenomenon of the
solar cycle. The existence of the second maxima in
the 
- belt of the both solar
hemispheres is in contradiction with the expectation of the
sole steady equatorward progression of the magnetic
field occurrence throughout a given cycle (the Spörer's
Law), indicating that there must be also the poleward directed magnetic
flux, after the sunspot maximum. Contrary, the temporal distribution pf the WPS in the 
to 
and
-latitudinal zones confirmed the Spörer's Law, where single multiperiod peaks are displayed in 1982 and 1991 years. The intermittent (during solar cycle maxima) 150-day, as well as, the 1.3 yr periodicities occur in all latitudinal zones. Their relation to periodicities of other solar phenomena (LDE-type flares) are discussed.