断层气CO_2测定新方法与张北-尚义6.2级地震预报  

A NEW MEASUREMENT METHOD FOR CO_2 IN FAULT GAS AND PREDICTION OF ZHANGBEI-SHANGYI M6.2 EARTHQUAKE

作　　者：林元武[1] 王基华[1] 高松升[1] 

机构地区：[1]中国地震局地质研究所,中国北京100029

出　　处：《地震》1998年第4期353-357,共5页Earthquake

摘　　要：简要介绍了断层气CO2快速测定法的特点，分析了近7年来在怀来后郝窑断层气CO2观测点测得的9个4级以上地震的CO2前兆异常特征。张北-尚义地震前47天，断层气CO2出现突升异常，异常峰值是背景值的10倍左右，据此在震前12天对这次地震提出了较好的短临预报意见。A fast measurement method is introduced here for measuring CO2 in fault gas. The characteristics of CO2 precursory anomalies , which were observed in 9 earthquakes (M ≥4) in Houhaoyao, Huailai county for last 7 years, are analyzed- Forty-seven days before the Zhangbei-Shangyi earthquake，an anomaly of abrupt increase in CO2 in fault gas was observed. The peek value of CO2 is about 10 times as the background value. Based upon the above-mentioned result, a relatively accurate short-term and impending prediction for the earthquake was made 12 days before it.

关 键 词：断层气 前兆异常 张北-尚义地震 地震预报 

分 类 号：P315.7[天文地球—地震学]