中文摘要：

对无仪器记录的历史地震,基于灾害信息给出的震级参数往往误差较大;即使有仪器记录以来,对某些较大地震事件,不同地震台网测定的震级值仍相差较大,这需要确定合理的地震震级值.为此,基于孕震断层多锁固段脆性破裂理论,提出了地震震级修订方法,并据此修订了全球地震目录震级参数,本文研究结果可供有关部门修订地震目录时参考.基于修订的参数,本文还讨论了全球是否已进入地震活跃期这一热点问题.

英文摘要：

In general,there is large error of magnitude parameters evaluated from disaster information for the historical earthquakes.Even for the earthquakes recorded by instruments,the magnitude values measured by different seismic networks are still quite different for some large events. Based on the brittle failure theory of multiple locked patches in a seismogenic fault system,we present a revision method of earthquake magnitude and then revise the magnitude parameters of global earthquake catalog,which could be referenced by the department concerned. In addition, we also discuss a hot issue whether the earth has entered into the seismic active period using the revised parameters.