Analyses the variations of some seismometry indices before the Yongdeng MS 5.8 earthquake on July 22,1995.Finds out obvious anomalies of four indices appeared before the earthquake,which are strengthening of small earthquake activity,background seismic gap,activity belt of small earthquake and precursory seismic swarm.
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何秀琴,牛旺祥,王珍.永登5.8级地震前几项测震学指标的异常分析[J].地震工程学报,1996,18(3):79-83. He Xiuqin, Niu W ang xiang, Wang Zhen. ANOMALY ANALYSIS OF SOME SEISMOMETRY INDICES BEFORE THE YONGDENG MS 5.8 EARTHQUAKE[J]. China Earthquake Engineering Journal,1996,18(3):79-83.