陕西华阴台一次罕见气氡骤升异常的成因分析  

The Causal Mechanism of a Rare Soaring Anomaly in Radon Gas in Groundwater Observed at the Huayin Station,Shaanxi Province,China

作　　者：杨小林 张国强[2] 朱琳[2] 王新[2] 赵小茂[2] YANG Xiaolin;ZHANG Guoqiang;ZHU Lin;WANG Xin;ZHAO Xiaomao(Jinggangshan University,Jiangxi Ji'an 343009,China;Shaanxi Earthquake Agency,Shaanxi Xi'an 710068,China)

机构地区：[1]井冈山大学,江西吉安343009 [2]陕西省地震局,陕西西安710068

出　　处：《四川地震》2025年第1期52-56,共5页Earthquake Research in Sichuan

基　　金：国家自然科学基金(42104091)。

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。Anomalous variations in radon(222 Rn)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 earth-quakes,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 ob-servation 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.

关 键 词：气氡 突变异常 华阴台 测氡仪 电离室 

分 类 号：P315.7[天文地球—地震学]