| 唐山地震前京津地区水氡异常场的某些特征 |
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| 引用本文： | 李宣瑚.唐山地震前京津地区水氡异常场的某些特征[J].地震地质,1982,4(1):57. |
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| 作者姓名： | 李宣瑚 |
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| 作者单位： | 国家地震局 |
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| 摘 要： | 本文通过对京津地区十个重点井孔水氡资料的处理分析,发现唐山地震前,京津地区水氡异常场有几个显著的特征。京津唐一带区域性水氡的升高变化,是该区构造应力场加强的结果,当观测区域受力达到线应变为10-6—10-5数量级的状态时,可以观测到水氡明显的异常变化。水氡中短期异常的扩散现象及临震突跳的收缩现象,是与震源应力场直接有关联的前兆变化。水氡异常的机理是复杂的,是多种作用的综合
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| 关 键 词： | 水氡异常 唐山地震 井孔 京津地区 突升 临震 短期异常 突跳 震源应力场 单点 |
SOME FEATURES OF RADON ANOMALOUS FIELD IN THE BEIJING-TIANJIN REGION BEFORE THE TANGSHAN EARTHQUAKE |
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| Abstract: | Analysing the radon data from several wells in Beijing-Tianjin region, it is believed that the main characteristics of radon anomalous field in this region before the Tangshan earthquake are as follows:1) There was a trend anomaly of the regional average variations in radon for nearly four years, and the anomalous duration was closely related to the Tangshan earthquake (including strong aftershocks). 2) The moderate-term anomaly of radon (1975.8-1976.4) showed a radiative transmission phenomenon |
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