| 1992年黄海5.3级地震 |
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| 引用本文： | 林怀存,董旭光.1992年黄海5.3级地震[J].地震地磁观测与研究,1993,14(1):13-19. |
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| 作者姓名： | 林怀存 董旭光 |
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| 作者单位： | 山东省地震局，山东省地震局 |
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| 摘 要： | 对黄海5.3级地震序列研究表明,该序列属于一个典型的主-余震型地震。震源机制解的结果表明,该区主压应力方向基本上和华北地区主压应力方向一致。通过对5.3级地震前区域地震活动分析结果说明,该地震是在区域地震活动中期异常背景的情况下发生的,即存在明显的地震活动增强和孕育空区。
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| 关 键 词： | 黄海 地震 震源机制 空间分布 震级 |
The earthquake of M_s 5.3 in the Yellow Sea region in 1992 |
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| Lin Huaicun and Dong Xuguang Seismological Bureau of Shandong Province,Jinan ,China.The earthquake of M_s 5.3 in the Yellow Sea region in 1992[J].Seismological and Geomagnetic Observation and Research,1993,14(1):13-19. |
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| Authors: | Lin Huaicun and Dong Xuguang Seismological Bureau of Shandong Province Jinan China |
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| Institution: | Lin Huaicun and Dong Xuguang Seismological Bureau of Shandong Province,Jinan 250021,China |
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| Abstract: | The study on the earthquake sequence of mean shock M_s 5.3 occurred in Yellow Sea re- gion shows that the earthquake sequence is a typical main shock-after shock sequence.The P-axis orientation from focal mechanism solution of main shock is consistent with the princi- pal stress orientation of north China.Based on the analysis of regional seismic activity be- fore the main shock,we have obtained the results as follows:the earthquake was occurred on the background of intermediate-term precursors of regional seismic activity i.e.the regioanl seismic activity level has obviously increased and a seismogenic gap has appeared around the epicenter area before the shock. |
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| Keywords: | the Yellow Sea earthquake focal mecanism spatial distribution |
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