摘要
本文回顾了１９８３年以来一些对太阳活动的谱分析结果。大致可分为两种规律：在太阳活动１１年周期的上升相一般呈现８０天左右的周期。下降相呈现１５０天左右的周期。这些规律均是由太阳全日面总体活动指数得到的谱分析结果。文中将第２２周上升段（１９８７．１．１—１９８８．７．３１）的太阳黑子群和Ｘ射线耀斑按经度带作了极大熵谱估计。结果表明，各经度带的活动规律不同，同一经度带内，太阳黑子群和Ｘ射线耀斑的出现规律也不尽相同。这种将事件按经度带分布得到的活动规律对事件本身的中期预报将会有实际应用价值。
The results of some spectrum analyses about the solar activity since 1983 have been reviewed in this paper.It rough contained two active petiods:the Period of about 80 days during the rising phase of the solar cycle of 11 years,and the period of about 150 days during the declining phase of the solar cycle of 11 y6ars.Both Peneds are estimated using the general index Of the solar activity of whole solar disk.The periods of the McIntosh classifications of sunspot groups and X-ray flares of every longitudinal zone (from January 1,1987 to July 31,1988)are estimated by using the Maximum Entropy method.It is showed that the different longitudinal zone has the different active periods,and the periods of sunspot groups are different from the Pened of X-ray flares in the same lOngitudinal zone.The active rhythm of the solar events in the varying longitudinal zone has the significant value for the medium-term prediction of solar activity.
出处
《云南天文台台刊》
CSCD
1996年第3期21-28,共8页
Publications of the Yunnan Observatoty
基金
国家自然科学基金
