A number of power plants have been affected along Japan's North-East coast following Friday's 8.9 magnitude earthquake sparking fears of a nuclear explosion.

9级大地震使日本东北沿岸一系列发电站受到牵连，引发对核爆炸的担忧。

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The occurrence condition and mechanism of gas explosion are discussed and the possible magnitude of induced earthquake is estimated in this paper.

本文讨论了气爆机理。通过弹性理论分析和能量计算，讨论了它产生的条件，估计了其一般震级。

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It glowed like a 4th magnitude star, NASA says, thanks to an explosion equivalent to 5 tons of TNT.

CNN: Bright explosion on moon visible from Earth, NASA says