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SCIENCE STUDY

Sands bubble when earth shakes

作者:TEENS
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A 6.2-magnitude earthquake hit Gansu and Qinghai just before midnight on Dec 18. Apart from bringing down buildings, the quake triggered (引发) a sand boil (砂涌) in several villages in Qinghai. The mud was about 2 to 3 meters deep, covering nearly 60,000 square meters.

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