成组中强震前后动态小震的时空活动特征
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摘要
分析了进入活跃时段以来,新疆及邻近地区自1995年3月19日和硕Ms5.0对地震后,相继发生的12次Ms≥4.7地震前后调制小震和动态小震的时空活动特征,据此提出了孕震系统失稳模式:(1)外因调制-系统响应模式;(2)震源触发-系统响应模式.结果表明,调制小震密集区及边缘和受中强震触发引起长程关联活动的动态小震密集区及边缘,有可能是近期中强震的危险区.
The time - spacial characteristics of modulating small earthquake and dynamic small earthquakes before and after the 12 moderate earthquakes from Mar. 3, 1995 in Xinjiang and its nearby area were discussed , when these areas seismicity were in active period. Based on the above feature , we put for-word the instable model of seismogenic system: (a) the system response model due to the modulation of external factor; (b) the system response model due to the earthquake source trigger. The results show that the swarm region and its nearby of the modulating small earthquake and dynamic small earthquakes maybe the dangerous region of moderate earthquakes in the near future.
The time - spacial characteristics of modulating small earthquake and dynamic small earthquakes before and after the 12 moderate earthquakes from Mar. 3, 1995 in Xinjiang and its nearby area were discussed , when these areas seismicity were in active period. Based on the above feature , we put for-word the instable model of seismogenic system: (a) the system response model due to the modulation of external factor; (b) the system response model due to the earthquake source trigger. The results show that the swarm region and its nearby of the modulating small earthquake and dynamic small earthquakes maybe the dangerous region of moderate earthquakes in the near future.
引文
[1]周硕愚.系统科学导引.北京:地震出版社,1988
[2]秦保燕.强地震地点预报方法——交汇法.内陆地震,1997,11(2):103～111
[2]秦保燕.强地震地点预报方法——交汇法.内陆地震,1997,11(2):103～111
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