泾阳、临猗地震的地下流体异常特征
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摘要
总结了１９９８ 年泾阳Ｍｓ４．８ 及临猗Ｍｓ ４．６ 级地震的地下流体异常特征， 结果表明： 异常点数量有随震中距的增大而减少的趋势， 同时又受构造条件的制约； 异常时间以短临为主， 短期异常主要集中在震前３ 个月左右， 临震异常出现在震前１０ ｄ 左右； 异常幅度与地震三要素关系不明显。
The characteristics of underground fluid anomalies of 1998 Jingyang Ms 4 8 and Linyi Ms 4 6 earthquakes are summarized The results indicate a tendency that the number of anomaly points decreases with the increase in epicenter distance and is controlled by tectonic condition Time periods of anomalies are mainly short and immediate terms Short term anomalies are concentrated in 3 months before the quakes The immediate term anomalies occurred in 10 days before the events The relation of amplitude of anomaly with three elements of earthquake is not clear
The characteristics of underground fluid anomalies of 1998 Jingyang Ms 4 8 and Linyi Ms 4 6 earthquakes are summarized The results indicate a tendency that the number of anomaly points decreases with the increase in epicenter distance and is controlled by tectonic condition Time periods of anomalies are mainly short and immediate terms Short term anomalies are concentrated in 3 months before the quakes The immediate term anomalies occurred in 10 days before the events The relation of amplitude of anomaly with three elements of earthquake is not clear
引文
1 国家地震局预测预防司. 地下流体地震预报方法. 北京: 地震出版社, 1997
2 王长岭, 张慧, 张佩山. 1990年共和7.0级地震水化学前兆场特征. 西北地震学报, 1999, 21 (1): 1～6
3 范树全, 郭君杰, 范玉俊. 夏县台井溶解气体变化特征. 山西地震, 1996, 3: 37～39
4 车用太, 鱼金子, 刘五洲, 易立新. 张北—尚义地震的地下流体异常场及其成因分析. 地震学报, 1999, 21(2): 194～201
2 王长岭, 张慧, 张佩山. 1990年共和7.0级地震水化学前兆场特征. 西北地震学报, 1999, 21 (1): 1～6
3 范树全, 郭君杰, 范玉俊. 夏县台井溶解气体变化特征. 山西地震, 1996, 3: 37～39
4 车用太, 鱼金子, 刘五洲, 易立新. 张北—尚义地震的地下流体异常场及其成因分析. 地震学报, 1999, 21(2): 194～201
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