【摘要】 统计了太阳黑子活动11年周期和22年周期与华北地区(E108°～124°,N34°～42°)1815年～2002年187年6级以上强震的关系。结果显示,它们之间存在着较好的对应关系,华北地区的强震自1815年第4高潮以来,有84.6%的强震集中在太阳黑子11年变化周期的峰年段(±1年)和谷年段(±1年)内发生;其中尤以双周峰年段、单周谷年段较为集中;而单周下降时段却从未有过强震发生。目前正处于太阳黑子活动第23周单周峰年之后的下降时段,该统计区内强震发生的概率极低。更多还原

【Abstract】 The relation between sunspot activity cycle and over 6 magnitude earthquakes occurred in North China (108°～124°E, 34°～42°N) from 1815 to 2002 is studied with statistics. The results show that there was a good correspondence among them. Since the fourth climax, 86.6% of the strong earthquakes in North China concentrated in the peak period (±1 year) and valley period (±1 year) of the 11 years’ cycle, especially in double week peak and single week valley period. There was no earthquakes occurred in the period of declining period of a single week. It is in the declining period of 23rd week at present, so the probability of earthquake in the region is very low.更多还原