OBSERVATION OF CO2 IN THE FIELD OF ZHANGBEI SHANGYI EARTHQUAKE AND PREDICTION OF SEISMIC TREND AFTER MAIN SHOCK

SEISMOLOGY AND GEOLOGY ›› 1998, Vol. 20 ›› Issue (2): 117-121.

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OBSERVATION OF CO₂ IN THE FIELD OF ZHANGBEI SHANGYI EARTHQUAKE AND PREDICTION OF SEISMIC TREND AFTER MAIN SHOCK

Lin Yuanwu, Liu Wuzhou, Wang Jihua, Che Yongtai

Insitiute of Geology, Seismology Bureau of China, Beijing 100029

Received:1998-02-28 Revised:1998-03-31 Online:1998-06-10 Published:2009-11-25

张北-尚义地震现场CO₂测量与震后趋势判断

林元武, 刘五洲, 王基华, 车用太

中国地震局地质研究所, 北京 100029

基金资助:
国家地震局地质研究所论著98B00012。

Abstract

Abstract: Dynamic characteristics of CO₂ at 4 observation sites in the field of Zhangbei Shangyi M 6.2 earthquake are studied by using fast measurement method for CO₂.The source of CO₂ is discussed preliminarily.The results indicate that no anomaly in CO₂ is observed.It is suggested that there is no signal of increase in tectonic stress after Zhangbei Shangyi earthquake.According to the regulation of change in CO₂,on Jun.10 and Feb.3,1998 ,respectively,we predicted that there will be little possibility to occur strong aftershocks of M_s≥5.0 in 15 days.The fact indicates that the prediction is correct.It is suggested that the fast measurement method for CO₂ will pay an important role in prediction of seismic trend after main shock.

Key words: Fault product gas, Aftershock, ZhangbeiShangyi earthquake

摘要： 利用CO₂快速测定法监测了张北-尚义地震现场4个观测点的CO₂动态特征,并初步讨论了CO₂的来源。结果表明CO₂没有明显的异常,故认为6.2级地震之后,震区构造应力没有进一步增强的迹象。因此于1998年1月20日和2月3日两次提出15d内震区发生M_s≥5.0强余震的可能性不大的震后趋势预测意见。事实证明这个判断是正确的。

关键词: 断层气, 余震, 张北-尚义地震

Lin Yuanwu, Liu Wuzhou, Wang Jihua, Che Yongtai. OBSERVATION OF CO₂ IN THE FIELD OF ZHANGBEI SHANGYI EARTHQUAKE AND PREDICTION OF SEISMIC TREND AFTER MAIN SHOCK[J]. SEISMOLOGY AND GEOLOGY, 1998, 20(2): 117-121.

林元武, 刘五洲, 王基华, 车用太. 张北-尚义地震现场CO₂测量与震后趋势判断[J]. 地震地质, 1998, 20(2): 117-121.

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OBSERVATION OF CO₂ IN THE FIELD OF ZHANGBEI SHANGYI EARTHQUAKE AND PREDICTION OF SEISMIC TREND AFTER MAIN SHOCK

张北-尚义地震现场CO₂测量与震后趋势判断

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