There also existed some correlation between the relative variation of water radon and the occurrence of earthquakes. 水氡的相对变化量与地震也存在着一定的关系。
Results of the experiment show that rock rupture may be considered as one of the causes of variation of Radon content before the occurrence of an earthquake. 实验结果表明,可以认为岩石破裂是引起地震之前氡含量异常的原因之一。