史忠先^*

（  中国国家天文台；  ）

摘要： 21-23周期（1976-2007年），我国共观测到黑子群12528群。南半球6637群，北半球5891群。黑子群面积<100的小黑子群，共9440群，占总数的0.75。面积≥100的黑子群3088群，面积≥650的黑子群有439群，面积≥750的黑子群共329群，它们各占总体的0.0350和0.0263。大的XXF-HX耀斑都发生在大黑子群中。
关键词： 太阳黑子，太阳黑子群，黑子群变化，黑子群变化规律，黑子群面积变化分类研究

Shi Zhongxian^*

（  The National Astronomical Observatory of Chinese；  ）

Abstract： 21-23 period (1976-2007 years), the observed sunspot group 12528 group. The 6637 group of southern hemisphere, the northern hemisphere 5891 group. Sunspot group area <100 small sunspot group, a total of 9440 group, accounting for 0.75 of the total. Area ≥ 100 sunspot group 3088 group, area ≥ 650 sunspot group 439 group, area ≥ 750 sunspot group consists of 329 groups, each accounting for 0.0350 and 0.0263. Large XXF-HX flare occurred in large sunspot group.
Keywords： Sunspots, sunspot group, sunspot group sunspot group changes, changes, classification of sunspot group area change

 

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