| 我国八级大震前的地震活动图象 |
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| 引用本文： | 李孟銮,董卫国,王一宽. 我国八级大震前的地震活动图象[J]. 地震工程学报, 1982, 4(4): 5-10 |
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| 作者姓名： | 李孟銮 董卫国 王一宽 |
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| 作者单位： | 宁夏地震局(李孟銮，董卫国)，宁夏地震局(王一宽) |
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| 摘 要： | 本文根据我国M≥8级地震的记录资料,研究了它们发生前的地震活动图象,发现主震前明显地存在有地震活动空白区、前兆性震中迁移和前震(包括广义前震)呈条带密集分布的异常图象,并提出了“地震活动空白带”的概念。根据b值和能量释放曲线外推,可以认为8级大地震的发生,是所在活动断裂带(或块体)长期活动的必然结果。
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| 收稿时间： | 1982-02-08 |
SEISMICITY PATTERN BEFORE MAGNITUDE 8 EARTHQUAKE OF CHINA |
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| Li Mengluan,Dong Weiguo and Wang Yikuan. SEISMICITY PATTERN BEFORE MAGNITUDE 8 EARTHQUAKE OF CHINA[J]. China Earthguake Engineering Journal, 1982, 4(4): 5-10 |
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| Authors: | Li Mengluan Dong Weiguo Wang Yikuan |
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| Affiliation: | Seismological Bureau of Ningxia Hui Autonomous Region,Seismological Bureau of Ningxia Hui Autonomous Region and Seismological Bureau of Ningxia Hui Autonomous Region |
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| Abstract: | This paper deals with the seismicity pattern before the earthquake ac-cording to seismological data of China.The results obtained from this work show that there are three abnor-mal patterns,namely,gap of the seismicities,epicenter shift and fore-sock''s belt densely-distributed and the concept of "gap belt of seismicity" has been proposed.Besides,according to the b-value and the energy-releasing curve,it is inferred that the occurrence of the M 8 earthquake was cau-sed by an active tectonic zone with a long time action |
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