| 大地震前区域地震活动迁移 |
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| 引用本文： | 傅征祥. 大地震前区域地震活动迁移[J]. 地球物理学报,1982,25(06): 509-515, |
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| 作者姓名： | 傅征祥 |
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| 作者单位： | 国家地震局分析预报中心 |
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| 摘 要： | 本文初步分析了1966—1976年间,中国某些大地震（Ms≥7.0）前区域中小地震活动向未来大震震源区及其邻近集中迁移的异常现象。这种迁移现象反映出大震前远震源区和近震源区内地震活动交替活跃和平静的过程。 指出在大震孕育过程中的区域地震活动迁移过程,可能与区域介质强度或原有断面“闭锁”“粘结”程度存在差异有关。
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| 关 键 词： | 区域地震活动 中小地震活动 次大地震 远震源区 近震源区 震前 迁移过程 迁移现象 B区 震例 |
| 收稿时间： | 1980-11-14 |
| 修稿时间： | 1981-03-20 |
MIGRATION OF REGIONAL SEISMICITY BEFORE SOME GREAT EARTHQUAKES |
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| FU ZHENG-XIANG. MIGRATION OF REGIONAL SEISMICITY BEFORE SOME GREAT EARTHQUAKES[J]. Chinese Journal of Geophysics (in Chinese),1982,25(06): 509-515, |
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| Authors: | FU ZHENG-XIANG |
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| Affiliation: | Center for Analysis and Prediction,State Seismological Bureau |
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| Abstract: | The anomalous phenomena of the regional seismicity migration towards the future source area before some great earthquakes （Ms≥7.0） in China in 1966-1976 were analysed.The migration phenomena reveal a process that the seismicity in both the far-field and the near-field becomes intensive and quiet alternatively before a main shock.The migration process might be related to the difference of the medium strength in the different areas,and to the degree of locking on the different fault surfaces. |
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