CAOSP abstracts, Volume: 24, year: 1994
- Author(s): KULCAR, L.; SYKORA, J.
- Journal: Contributions of the Astronomical Observatory Skalnate Pleso,
vol. 24, p. 79-84.
- Date: 08/1994
- Title: Distribution of coronal holes over the solar surface 1970--1991
- Keyword(s): CORONAL HOLES, SOLAR CORONA, SOLAR CYCLE
- Pages: 79 -- 84
The latest catalogue of coronal holes (hereinafter CHs) was analysed to
find long-term and large-scale regularities in the latitudinal and longitudinal
distributions of this phenomenon.A systematic displacement of the CHs frequency
curves and different trends of this displacement were found when analysing the
CHs according to their size and helio-latitude. The longitudinal distribution
of the CHs shows two very flat maxima, and the global changes of the area
covered by coronal holes are discussed in relation to the 11-year solar cycle.
The analogy of the CHs latitudinal and longitudinal distributions with that of
the green corona low brightness regions (hereinafter GCLBRs) is indicated and
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