| 唐山7.8级地震前水氡异常演化特征 |
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| 引用本文： | 邵永新,李君英,李一兵,田山.唐山7.8级地震前水氡异常演化特征[J].西北地震学报,2000,22(3):247-250. |
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| 作者姓名： | 邵永新 李君英 李一兵 田山 |
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| 作者单位： | 天津市地震局,天津 300201 |
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| 摘 要： | 应用华北地区３６个水化观测点的水氡观测资料，以半年为尺度对唐山７．８级地震前水氡的异常演化过程进行了系统研究。结果表明：该次地震前水氡异常存在由外围向震中区迁移的特征，异常先在外围地区出现，短临阶段才地震中区附近形成较强的异常区，异常形态有由复杂向简单演化的特征。震后水氡动态演化图像呈现离散态势，并逐步恢复正常。
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| 关 键 词： | 唐山地震 水氡 氡异常 异常特征 |
| 文章编号： | 1000-0844(2000)03-0247-04 |
| 收稿时间： | 2000/6/5 0:00:00 |
| 修稿时间： | 2000年6月5日 |
EVOLUTION FEATURE OF RADON ANOMALY IN GROUNDWATER BEFORE THE TANGSHAN MS7.8 EARTHQUAKE |
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| SHAO Yong-xin,LI Jun-ying,LI Yi-bing and TIAN Shan.EVOLUTION FEATURE OF RADON ANOMALY IN GROUNDWATER BEFORE THE TANGSHAN MS7.8 EARTHQUAKE[J].Northwestern Seismological Journal,2000,22(3):247-250. |
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| Authors: | SHAO Yong-xin LI Jun-ying LI Yi-bing and TIAN Shan |
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| Institution: | Seismological Bureau of Tianjin, Tianjin 300201, China,Seismological Bureau of Tianjin, Tianjin 300201, China,Seismological Bureau of Tianjin, Tianjin 300201, China and Seismological Bureau of Tianjin, Tianjin 300201, China |
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| Abstract: | Observation data of radon in groundwater of 36 wells in northern part of North China are used to study the evolution processes of radon anomaly before the Tangshan M S7.8 earthquake taking per half year as scale.The results show anomalies of the radon in groundwater progressed from outer ring to epicentral region and anomalous pattern changed from complicated to simple before the earthquake.In the short impending stage,strong anomaly region was formed at Tangshan area.After the earthquake,the anomalous pattern dispersed and normally recovered. |
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| Keywords: | Tangshan earthquake Radon in groundwater Radon anomaly Anomalous character |
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