Journal
GEOMAGNETISM AND AERONOMY
Volume 58, Issue 8, Pages 1170-1174Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S001679321808025X
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Funding
- Russian Foundation for Basic Research [16-02-00090, 18-32-00555, 16-02-00749]
- Presidium of the Russian Academy of Sciences [28]
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This paper describes some features of the two sunspot group populations' properties: Large Long-living Groups, LLG, and Small Short-living, SSG (each distributed lognormally), divided by the lifetime of the group (less and strictly more than 5 days). It is shown that the relative fraction of LLG varies with the latitude from 0.45 at mid-latitudes to 0.25-0.30 at low and high latitudes. The SSG has a wider spread in latitude than the LLG. It is shown that the N-S asymmetry is an overall global process to which both the LLG and the SSG are exposed. At the same time, the asymmetry of LLG shows a slightly higher dispersion of oscillations than the asymmetry of SSG. Other properties of sunspot groups in the context of the two separate populations existence are considered.
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