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基于冰岛南部地区长达数世纪的地震活动模式,事先预测了该区转换型板块边界处的一个地震序列。该地震序列包括2000年6月的2个6.5级地震。从1999年开始的钻孔水中氡的监测表明氡的变化和这些事件具有明显、一致的相关性。在覆盖震中的50km×30km范围内,总计有7个采样站。这些站点显示了一致的变化模式,可识别出4种变化类型:1)震前氡下降,震前的101～167天观测到异常低值。2)震前上升,6个台站的时间序列在震前40～144天出现峰值。3)同震阶跃,极可能和在整个区域内观测到的地下水压力的同震变化有关。4)震后回归,大约3个月后,氡的值恢复到震前水平,与地下水的压力变化同时发生。
Based on centuries-old seismic patterns in the southern part of Iceland, a series of seismic sequences at the boundary of the transitional plate in this area are predicted in advance. The earthquake sequence includes two 6.5 magnitude earthquakes in June 2000. Monitoring of radon in borehole water, starting in 1999, showed a clear and consistent correlation between changes in radon and these events. In the range of 50km × 30km covering the epicenter, a total of 7 sampling stations. These sites show a consistent pattern of change that identifies four types of changes: 1) radon declines before the earthquake, with unusually low values observed 101 to 167 days before the earthquake. 2) Before the earthquake, the time series of 6 stations peaked 40- 144 days before the earthquake. 3) The coseismic step is most likely related to the co-seismic variation of the groundwater pressure observed over the entire area. 4) After the earthquake returns, after about 3 months, the value of radon will return to the pre-earthquake level, which coincides with the pressure change of groundwater.