摘要
利用云南天文台太阳黑子观测资料，对太阳活动第１９ 周至第２２ 周日面高纬度（ 高于４０°） 的黑子群进行了统计．结果表明：高纬黑子面积绝大部分小于１００ ，平均５６ ，寿命大部分为１ ～３ 天，平均４ 天；黑子分类绝大部分为ＡＸＸ、ＨＳＸ、ＢＸＯ，其中ＡＸＸ 约占总数的一半．高纬黑子在日面南北半球上的不对称分布可用来预报该太阳周内的太阳活动在南北半球上的主次．由此预报２３
Based on the data of the sunspots observed at Yunnan Observatory, the sunspot groups at high latitudes (over 40°) during the solar cycles 19,20,21, and 22, and the rising period of the solar cycle 23 have been collected statistically in this paper. The results show that for most of the sunspots at high latitudes, the sunspot classes are AXX, BXO or HSX, the areas are less than 100, the lifetimes are 1 to 3 days, and the relation between lifetime and the maximum area is T=0.07×A. If sunspots at high latitides are found to dominate in one hemisphere (the northern or southern) in a solar cycle, then we can predict that solar activities will dominate in this hemisphere for the entire cycle. According to this finding, the dominance of solar activity in the southern hemisphere will continue during the coming cycle 23.
出处
《天文学报》
CSCD
北大核心
1999年第4期435-438,共4页
Acta Astronomica Sinica
