| 唐山地震的重力异常及其震后变化 |
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| 引用本文： | 张晶,孙柏成.唐山地震的重力异常及其震后变化[J].地震,1998,18(3):293-298. |
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| 作者姓名： | 张晶 孙柏成 |
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| 作者单位： | 中国地震局分析预报中心(张晶!中国北京100036)，中国地震局综合观测中心(孙柏成!中国北京100039，张成强!中国北京100039) |
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| 摘 要： | 将唐山地区 1 981～ 1 997年流动重力资料进行整理 ,分析唐山地震前后重力变化的全过程。震后二十余年 ,唐山地区未出现过震前量级的重力异常 ,且在震后 1 0年里重力值逐渐恢复至正常水平。研究表明 ,唐山地震前的异常变化是确实存在的 ,1 995年 1 0月古冶 ML5.4地震前亦出现了形态相似的重力变化
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| 关 键 词： | 唐山地震 重力 异常 |
GRAVITY ANOMALY BEFORE TANGSHAN EARTHQUAKE AND GRAVITY CHANGESAFTER THE EARTHQUAKE |
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| Zhang Jing Sun Baicheng Zhang Chengqiang Center for Analysisand Prediction,CSB,Beijing ,China Comprehensive Surveying Brigade,CSB,Beijing ,China.GRAVITY ANOMALY BEFORE TANGSHAN EARTHQUAKE AND GRAVITY CHANGESAFTER THE EARTHQUAKE[J].Earthquake,1998,18(3):293-298. |
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| Authors: | Zhang Jing Sun Baicheng Zhang Chengqiang Center for Analysisand Prediction CSB Beijing China Comprehensive Surveying Brigade CSB Beijing China |
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| Institution: | Zhang Jing1 ) Sun Baicheng2 ) Zhang Chengqiang2 ) 1 ) Center for Analysisand Prediction,CSB,Beijing1 0 0 0 36,China 2 ) Comprehensive Surveying Brigade,CSB,Beijing 1 0 0 0 39,China |
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| Abstract: | The data of mobile gravity measurementin Tangshan region are processed from1 981 to1 997.Analyzing gravity changes before and after Tangshan earthquake,it indicates that no similar gravity anomaly appeared in Tangshan region 2 0 years after the earth- quake,and the gravity value has gradually return to the normal level within1 0 years after the earthquake.The resultshows thatthere was the gravity anomaly certainly existed be- fore Tangshan earthquake and there was similar gravity change before the Guye earth- quake with ML5.4 ,1 995,in this area. |
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| Keywords: | Tangshan earthquake Gravity Anomaly |
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