中强震前后泉水中砷含量变化特征及其在地震预报中应用的可行性研究

作者在滇西红河断裂带北段布设了5个泉点,开展了砷含量变化的观测研究。通过近三年的观测,发现泉水中砷含量的变化能较好地反映该地区的中强地震活动,地震前泉水中砷含量明显增高。以澜沧7.6级地震为例,讨论了地震前后地下水中砷含量的异常特征及异常机理,并对其在地震预报中应用的可行性进行了论证。

THE VARIATION OF ARSENIC CONTENT IN SPRING BEFORE AND AFIER MID-STRONG EARTHQUAKE AND THE STUDY OF ITS FEASIBILITY OF APPLY IN EARTHQUAKE PREDICTION

To monitor the Arsenic dynamic variations in fault gases and groundwater, five spring points were located at the north segment of the Red River fault in western Yunnan. For three years, we have conducted Arsenic observation, the results show that Arsenic changes are fairly relaxed to the moderately strong earthquakes in this region. With the example showing the relations in the M 7.6 Lancing earthquake, the Arsenic abnormal features in the seismogenic process and the abnormal mechanism are discussed. And the feasibility of applying Arsenic in earthquake prediction also is demonstrated.