| 华北地区大地震前地震的围空区特征 |
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| 引用本文： | 魏光兴,林趾祥,朱宣久,赵玉海,赵兴兰,侯海峰.华北地区大地震前地震的围空区特征[J].地球物理学报,1978,21(3):213-217. |
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| 作者姓名： | 魏光兴 林趾祥 朱宣久 赵玉海 赵兴兰 侯海峰 |
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| 作者单位： | 山东省地震局 |
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| 摘 要： | 本文分析了华北地震区九次7.0级以上大地震前中、小地震的平面分布,发现较多的大地震具有填空性.对大地震前的空区参数与大地震的关系进行了初步讨论.
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| 关 键 词： | 小地震 区特征 大地震 地震分布 讯号 华北地区 地震填空性 长轴 形成时间 8级地震 |
| 收稿时间： | 1977-10-08 |
ON SEISMIC GAPS PREVIOUS TO CERTAIN GREAT EARTHQUAKES OCCURRED IN NORTH CHINA |
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| WEI GUANG-XING,LIN ZHI-XIANG,ZHU XUAN-JIU,ZHAO YU-HAI,ZHAO XING-LAN,HOU HAI-FENG.ON SEISMIC GAPS PREVIOUS TO CERTAIN GREAT EARTHQUAKES OCCURRED IN NORTH CHINA[J].Chinese Journal of Geophysics,1978,21(3):213-217. |
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| Authors: | WEI GUANG-XING LIN ZHI-XIANG ZHU XUAN-JIU ZHAO YU-HAI ZHAO XING-LAN HOU HAI-FENG |
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| Institution: | Seismological Bureau of Shandong Province |
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| Abstract: | In this paper, the epicentral distributions of small and moderate earthquakes previous to 9 great earthquakes （M ≥ 7.0） occurred in North China have been analysized. It can be seen that most of these earthquakes are preceded by gaps in the surrounding regions of their epicenters. The relations between the parameters of the seismic gaps such as the lengths of their long and short axes, the areas of the gaps etc. and the parameters of the corresponding earthquakes are discussed. |
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