In the past 300 years, no earthquake nearly that large — nothing larger than magnitude-eight — had struck in the Japan subduction zone.
在过去的300年里,在日本俯冲地区,从没发生过一个如此巨大的地震-没有一次比八级还大。
Soon after the magnitude-7.9 Wenchuan earthquake struck lastMay, geologist Fan Xiao asked: Could a large dam near the faulthave triggered the devastating quake?
去年五月7.9级汶川地震发生后不久,地质学家范晓就发问道:是位于断层附近的大坝诱发了这次灾难性的大地震吗?
In particular, for very large earthquakes moment magnitude gives the most reliable estimate of earthquake size.
尤其是对于特别重大的地震,“矩震级”能够确定出最为可信的地震规模。
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