地下流体中短期异常与地震活动性指标
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摘要
从地下流体前兆产生的机理出发，系统研究了地下流体中短期异常与地震活动性指标在空间和时间上的对应关系。研究结果表明：地下流体中短期异常点在空间上与地震空区、弱震条带、b值异常区有明显关系；在时间上与小震活动频度和b值、η值等也有密切的联系，其结果对判定地下流体中短期异常具有一定的指导意义。
Based on the precursor mechanism of ground fluid, the corresponding relation in space and time between ground fluid anomalies and seismicity parameter are systematically studied. The results show that there is obvious spatial relation among the medium-and short term anomalies of ground fluid, seismic gap, weak earthquake belt and distribution of b value anomalies, and there is close temporal relation between the medium-and short term anomalies of ground fluid, minor seismicity frequency, b and η value. The results provide the basis that is of genetic significance for judging medium-and short term anomaly indexes of hydrochemical parameter.
Based on the precursor mechanism of ground fluid, the corresponding relation in space and time between ground fluid anomalies and seismicity parameter are systematically studied. The results show that there is obvious spatial relation among the medium-and short term anomalies of ground fluid, seismic gap, weak earthquake belt and distribution of b value anomalies, and there is close temporal relation between the medium-and short term anomalies of ground fluid, minor seismicity frequency, b and η value. The results provide the basis that is of genetic significance for judging medium-and short term anomaly indexes of hydrochemical parameter.
引文
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2张炜,王吉易,鄂秀满,等. 水文地球化学预报地震的原理与方法.北京:教育科学出版社,1988.252～285
3郭增建,秦保燕. 地震成因和地震预报.北京:地震出版社,1991.97～120
4国家地震局分析预报中心第一研究室编.中国地震前兆资料图集(196～1980年).北京:地震出版社,1984.2～78
5刘耀炜,张元生.共和7.0级地震前地下流体前兆的动态演化特征.西北地震学报,1998,20(1):59～64
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