The Chilean coast has a long history of very large earthquakes.

智力的海岸在历史上就常发生超级大地震。

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Stress builds up, and from time to time is released by large earthquakes like this one.

压力累积，时不时需要得到释放，就产生了这样的大地震。

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Is there something within the earth that might be preferentially triggering these large earthquakes?

地球内部有什么物质激发了这些大地震吗？

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This week,we will tell how some storms might help to prevent large earthquakes.

VOA: special.2009.07.07

The large subduction zone earthquakes are responsible for most of the ocean-wide tsunamis, such as the recent tsunami in Japan.

VOA: special.2011.06.07

This could explain why Taiwan has a large number of small earthquakes, but rarely a major one.

VOA: special.2009.07.07

Japan is prone to large earthquakes, but none were reported in the area in the morning.

BBC: Japan Sasago tunnel: Collapse traps cars

Eastern Canada has a relatively low rate of earthquake activity, according to Natural Resources Canada, but there have been large earthquakes before, with about four exceeding magnitude 4 per year.

CNN: Quake reported in eastern Canada

Study co-author Geoffrey Abers of Columbia University said that "there's something important about getting unexpectedly large earthquakes out of small systems that we have discovered here, " adding that "the risk of humans inducing large earthquakes from even small injection activities is probably higher" than had been believed.

BBC: Oklahoma earthquake linked to oil extraction wastewater