France has carried out an underground nuclear explosion on Mururoa Atoll in the South Pacific.

法国已经在南太平洋的穆鲁罗瓦环礁进行了地下核爆。

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Measuring results of sonic velocities of rock samples subjected to shock produced by underground nuclear explosion are given in this Paper.

本文给出了地下核爆炸爆后围岩样品声速测量结果。

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Furthermore, calculation is carried out to underground structures on nuclear explosion load by quasi-static load method.

此外，对地下结构抗核爆荷载以拟静力的方法进行了计算。

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Shatter cones are surface features with distinctive wavy patterns that are known to be created only by the tremendous force of a meteorite impact or an underground nuclear explosion.

MSN: Massive meteorite crater found in Canadian Arctic

Pyongyang is angry about ongoing U.S.-South Korean military drills and about new U.N. sanctions, issued over the North's December long-range rocket launch, which the U.N. called a cover for a banned missile test, and its third underground nuclear explosion, conducted Feb. 12.

NPR: NKorea Criticizes SKorea Prez's 'Swish Of Skirt'

Nuclear test monitors in Vienna say the underground explosion had double the force of the last test, in 2009, despite the use of a device said by the North to be smaller.

BBC: Obama: Nuclear test 'isolates North Korea further'