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Research on Seismicity Features and Prediction of 2012 Heyuan M4.8 Earthquake
详细信息   
摘要


    
    

///The
    research on M4.8 earthquake sequence of Feb.16, 2012 shows that the
    earthquake was late strong aftershock of Heyuan MS6.1
    principal earthquake in 1962. The focal mechanism solution identifies that the
    principal compressive stress of the earthquake has almost the same direction as
    that in South China, and is defined as strike-slip and fault rupture. The
    possible unconfirmed small broken belt in northwest of reservoir is also
    identified as the possible seismogenic structure for this earthquake. The b
    value calculation shows that Heyuan reservoir areas were in the low stress
    state since 1960, so it is believed that strong destructive earthquake is
    unlikely to occur again in the future. So far this is the only time that
    short-term information of seismometry and premonition with prediction
    significance was simultaneously acquired before happening of moderate strong
    earthquake in south China.


    
    

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