Statistics
Scientific paper
Jun 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975acasn..16...12s&link_type=abstract
Acta Astronomica Sinica, vol. 16, June 1975, p. 12-18. In Chinese, with abstract in English.
Statistics
2
Magnetic Field Configurations, Solar Flares, Solar Magnetic Field, Sunspots, Solar Cycles, Solar Protons, Statistical Analysis
Scientific paper
The magnetic configurations of sunspot groups are separated into two classes, normal and abnormal. The normal class includes typical configurations of ordinary bipolar groups, in which spots are arranged nearly along the equator with preceding spots at lower latitudes, and their polarities conform to the well-known Hale's rule. The abnormal class includes delta-configuration, antipolarity, preceding spots at higher latitude, and magnetic axis inclination greater than 30 deg. Study of the flare statistics shows that 85% of the proton flares occurred in sunspot groups which have abnormal configurations 1-3 days before. Although the A- and delta-configurations possess higher production rate, they have produced only 12% and 46% of proton flares, respectively. Thus, the separation of the abnormal configurations may be significant in forecasting and studying the mechanism of proton flares.
Ai Guo-Xiang
Lin Zheng-Yan
Qian Shan-Jie
Shi Zhing-Xian
Zhao Ren-Yang
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