而代表一个震源区主要大小地震的特征事件，其震级波动大多在0.5个震级单位左右。

In most cases, the variation of the magnitudes of the characteristic events which may be representative of the major size earthquakes is about 0.5 unit of magnitude.

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今年以来累计数十次大小地震，让很多人不禁产生这样的疑问：地球是否进入新一轮地震活跃期？

So far, dozens of earthquakes of varying magnitudes have been registered in aggregate this year. People therefore start to wonder whether the Earth has entered a new phase of frequent earthquakes.

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