Acta Seismologica Sinica

, Volume 11, Issue 4, pp 495–500 | Cite as

Relationship between global seismicity and solar activities

  • Gui-Qing Zhang


The relations between sunspot numbers and earthquakes (M≧6), solar 10.7 cm radio flux and earthquakes, solar proton events and earthquakes have been analyzed in this paper. It has been found that: (1) Earthquakes occur frequently around the minimum years of solar activity. Generally, the earthquake activities are relatively less during the peak value years of solar activity, some say, around the period when magnetic polarity in the solar polar regions is reversed. (2) the earthquake frequency in the minimum period of solar activity is closely related to the maximum annual means of sunspot numbers, the maximum annual means of solar 10.7 cm radio flux and solar proton events of a whole solar cycle, and the relation between earthquake and solar proton events is closer than others. (3) As judged by above interrelationship, the period from 1995 to 1997 will be the years while earthquake activities are frequent. In the paper, the simple physical discussion has been carried out.

Key words

solar activity sunspot numbers solar radio flux solar proton events 


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Copyright information

© Acta Seismologica Sinica Press 1998

Authors and Affiliations

  • Gui-Qing Zhang
    • 1
  1. 1.Beijing Astronomical ObservatoryChinese Academy of ScienceBeijingChina

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