Abstract

The main shock-aftershock earthquake statistical model has been carried out by analyzing distribution of 68 sets of main shocks and aftershocks data of Wenchuan earthquakes and Fukushima earthquakes which given by China Earthquake Networks Center (CENC) and Pacific earthquake engineering research center of America (PEER).The research revealed that both magnitude and epicenter intensity are interrelated with main shock and its aftershocks. A statistical strongest aftershock’s intensity achieved according to its main shock basic design intensity, and it is effective just to consider a strongest aftershock earthquake.

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