| 唐山7.8级地震前后地下流体动态异常演化特征 |
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| 引用本文： | 邵永新,李君英,田山,李一兵.唐山7.8级地震前后地下流体动态异常演化特征[J].西北地震学报,2001,23(1):26-29. |
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| 作者姓名： | 邵永新 李君英 田山 李一兵 |
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| 作者单位： | 天津市地震局, |
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| 摘 要： | 以30口水动态及油井动态观测井1973年至1978年的观测资料为基础，对唐山7．8级地震前后水动态和油井动态异常的演化过程进行了分析研究，认为该次地震前后水动态演化过程可分为4个阶段。异常首先在震中区附近出现，然后异常区向外围区扩展，并呈现多点集中的特点。在中短期阶段异常明显向震中区收缩、迁移。在临震阶段在震中区附近形成高异常集中区。
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| 关 键 词： | 唐山地震 地下水位异常 油井动态 空间演化图像 震中区 |
| 文章编号： | 1000-0844(2001)01-0026-04 |
| 收稿时间： | 2000/6/5 0:00:00 |
| 修稿时间： | 2000年6月5日 |
THE EVOLUTION FEATURE OF GROUND FLUID DYNAMIC ANOMALIES BEFORE AND AFTER THE 1976 TANGSHAN MS7.8 EARTHQUAKE |
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| SHAO Yong-xin,LI Jun-ying,TIAN Shan and LI Yi-bing.THE EVOLUTION FEATURE OF GROUND FLUID DYNAMIC ANOMALIES BEFORE AND AFTER THE 1976 TANGSHAN MS7.8 EARTHQUAKE[J].Northwestern Seismological Journal,2001,23(1):26-29. |
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| Authors: | SHAO Yong-xin LI Jun-ying TIAN Shan and LI Yi-bing |
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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: | On the basis of data of 30 observation wells for the dynamic of groundwater and oil from 1973 to 1978,evolving process of anomalies of groundwater and oil dynamic before and after the Tangshan 7.8 earthquake is analyzed and studied.The results show the evolving process can be divided into four stages. The anomalies arise first in near epicentral area and then anomalous areas spread outward,showing several concentration point of anomaly.In middle short stage,anomalous areas clearly contract and migrate from outer ring to epicentral area.In the imminent stage,an anomalous concentration area with high value is formed in the epicentral area. |
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| Keywords: | Tangshan earthquake Groundwater level anomaly Dynamic of oil well Anomalous character Special evolution pattern |
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