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磁暴是太阳活动与地磁场相互作用所引起的一种复杂的地球物理效应。它们之间的活动相关性已得到了一些定性的了解。例如,据统计分析1937—1959年的580个太阳大耀斑表明,有50％的大耀斑可以引起磁暴。以及太阳黑子数与地磁活动程度(u)之间的11年周期变化等。为了解磁暴与太阳黑子的关系,本文利用太阳黑子相对数与日本柿岗地磁台1948—1978年间(其中所缺的1959—1962年的资料利用鹿屋台资料)每年出现的磁暴数,并
Magnetic storm is a complex geophysical effect caused by the interaction between solar activity and geomagnetic field. The relevance of the activities between them has been given some qualitative understanding. For example, a statistical analysis of the 580 solar flares from 1937 to 1959 shows that 50% of the large flares can cause a magnetic storm. And the 11-year period change between sunspot number and degree of geomagnetic activity (u). In order to understand the relationship between magnetic storms and sunspots, this paper makes use of the relative numbers of sunspots and the annual numbers of magnetic storms in 1948-1978 years in Japan (the information of which is lacking in 1959-1962)