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EARTHQUAKE ›› 2004, Vol. 24 ›› Issue (2): 89-96.

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Study of relation between the successive occurrence and the Quietness of moderately strong earthquakes in Yunnan and its neighboring region

HE Hong-wei1, QING Jia-zheng1, HE Guo-wen2, QIAN Xiao-dong1, SHI Shao-xian1   

  1. 1. Seismological Bureau of Yunnan Province, Kunming 650041;
    2. Seismological Bureau of Lijiang Prefecture, Lijiang 674100, China
  • Online:2004-04-30 Published:2021-11-29

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Abstract: The characteristics of time distribution of M≥5.0 earthquakes occurred in Yunnan and its neighboring region since 1925 are systematically studied. The definitions of successive occurrence and the quietness of M≥5.0 earthquakes occurred in Yunnan and its neighboring region are separately put forward. The basic features of successive occurrence and the quietness of moderately strong earthquakes are analyzed and the relation between the events of successive occurrence and quietness and the active-quiet process of strong earthquake is studied. The analytical results contribute a certain practical significance to the prediction of the earthquake trend.

Key words: Yunnan and its neighboring region, Quietness of moderate earthquake, Active period of strong earthquake, quiet period of strong earthquake

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