By using the rich historical earthquake data, the author studied some features of temporal and spatial variation of strong seismicity in the Sea of Japan.
利用日本海区丰富的震史资料，研究了该区强震活动时—空变化的某些特征。
It is shown that the evolution of seismicity patterns can predict well the strong earthquake preparation by the study of strong earthquakes in Qinghai area.
青海地区强震震例研究表明，地震活动图像演化过程对强震的孕育有较好的预示作用。
The space distribution of historical and modern earthquakes in and surrounding the Weihe basin shows that three dimensional cross structures have a strong dominion on seismicity in the basin.
分析了渭河盆地内部及其周边地区历史地震和现代地震的空间分布，发现立交构造对盆地内地震活动有着较强的控制作用。
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