The Basic Cycle of Solar Activity and the Global Magnetic Field and Active Phenomena Distribution
Abstract
We have compared the latitudinal distributions of polar faculae, green coronal emission maxima, prominences and of a new index of enhanced geomagnetic recurrence with the distribution of magnetic fields during the cycles Nos. 20 and 21. We did not find a distinct high-latitude initial stage of an extended cycle in the corona, prominences and polar faculae distribution. On the contrary, it seems that the polar faculae and their following polarity magnetic fields represent the last evolutionary phase of a magnetic activity cycle lasting 15 17 years. The enhanced recurrent geomagnetic activity seems to be related to the old cycle fields. All studied phenomena clearly display two types of latitudinal distribution: the polar belts, into which the old following polarity fields have been transported from the equatorial belt where both the polarities developin situ simultaneously, but in which the leading polarity fields only remain, crossing the equator during the minimum of activity, to play the same role on the opposite hemispheres in the new cycle.
- Publication:
-
Astrophysics and Space Science
- Pub Date:
- August 1990
- DOI:
- 10.1007/BF00652650
- Bibcode:
- 1990Ap&SS.170...85B
- Keywords:
-
- Faculae;
- Solar Activity;
- Solar Magnetic Field;
- Solar Terrestrial Interactions;
- Geomagnetism;
- Solar Corona;
- Spatial Distribution;
- Solar Physics