【摘要】 地下流体中气氡含量具有较好的地震前兆指示价值,因此阐明气氡异常的物理本源,对地震预测预报业务具有重要的现实意义。2023年5—6月,陕西华阴台气氡测值出现了一次罕见的骤升异常,为探明其真实成因,本文尝试采用相关性分析、理论孕震范围估算和对比观测试验等方法,来对该异常事件进行系统分析。结果表明,该异常主要是由于DDL-1型气氡仪电离室的故障所致。该工作所获认识不但有助于类似变化的合理推定,而且还能为测氡仪的进一步改良提供参考。更多还原

【Abstract】 Anomalous variations in radon(²²²Rn) content in groundwater are often used as an important precursor indicator in earthquake prediction studies.Therefore,to effectively apply radon anomalies for earthquake prediction purposes,it is particular important to establish a genuine physical linkage between radon anomalies and earthquakes,which is helpful for understanding how radon anomalies are related to the earthquake mechanism or the other non-tectonic origins.Between May and June 2023,a rare soaring anomaly of radon gas in groundwater was observed at the Huayin station.We have attempted to uncover the causal mechanism for the remarkable anomaly.The methods are including correlation analysis,estimation of radius of earthquake preparation zone,and paired observation test.Our results show that the radon gas anomaly was caused by a malfunction in the ionization chamber of a DDL-1 type amanometer.This finding could improve the interpretation of similar anomalies and contribute to the improvement of amanometer.更多还原