蚌埠台水氡观测数据变化分析

Analysis of variation characteristics of radon observation data in Bengbu station

对蚌埠地震台2020年4月15日以来出现的水氡数据转折下降—恢复上升的变化趋势进行分析,文章通过环境调查、气象因素对比、抽水取样化验后和研究得出:本次水氡变化与气温水温呈正相关关系,相关性显著,气温引起水温的变化,进而引起气体的溶解度和脱气率改变,从而引起水氡测值的变化。结合往年震例分析结果认为,气温可能不是引起水氡测值下降的单一因素,应该是环境干扰与地震前兆信息共同作用的结果,而水氡与气温之间的相关系数降低,与周边发生地震有一定的关联性。

This paper analyzes the trend of water radon data from Bengbu seismic station since April 15,2020.It is found that radon in Bengbu station is fluctuating.Through environmental investigation,comparison of meteorological factors and pumping sampling test,it is concluded that the change of radon in water has a positive and significant correlation with air temperature and water temperature.The air temperature changes the water temperature,and then changes the solubility and degassing rate of gas,thus causing the change of radon measurement value in water.According to the analysis results of previous earthquake cases,air temperature may not be the only factor causing the drop in radon readings.It should be the result of the interaction of environmental disturbance and earthquake precursory information.It is concluded that the reduction of correlation coefficient between water radon and temperature is related to the surrounding earthquakes.