Abstract The mid-term periodicities of polar faculae are studied separately for the total disk, northern and southern hemispheres of the Sun for a time interval from 1951 August to 1998 December. Apart from the 11-year Schwabe cycle which is the fundamental period and is found in all of the three time series, the following prominent results are found: (1) the rotational periodicity of solar activity at high latitudes is approximately from 28 to 32days; (2) a large number of quasi-periods appearing in low-latitude solar activity (annual variation, 1.3–1.7years, quasi-biennial oscillation, and 4–5years) also exist in polar faculae; (3) the periodicities on both hemispheres are not identical.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    On mid-term periodicities of high-latitude solar activity


    Contributors:
    Deng, L.H. (author) / Li, B. (author) / Xiang, Y.Y. (author) / Dun, G.T. (author)

    Published in:

    Advances in Space Research ; 54 , 1 ; 125-131


    Publication date :

    2014-03-04


    Size :

    7 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English






    Variations of mid-term periodicities in solar activity physical phenomena

    Valdés-Galicia, J.F. / Velasco, V.M. | Elsevier | 2007


    INTERMEDIATE-TERM PERIODICITIES IN SOME SOLAR ACTIVITY INDICES DURING CYCLE 23

    Atac, T. / Ozguc, A. / Rybak, J. et al. | British Library Conference Proceedings | 2005