Dai Yinghun, Zhang Qingrong, Chen lianzhu, Zhao Mingchun. THE CHARACTERISTIC OF SEISMICITY BELT BEFORE MODERATE STRONG EARTHQUAKE IN NORTH CHINA[J]. North China Earthquake Sciences, 1985, 3(4): 61-67.
Citation: Dai Yinghun, Zhang Qingrong, Chen lianzhu, Zhao Mingchun. THE CHARACTERISTIC OF SEISMICITY BELT BEFORE MODERATE STRONG EARTHQUAKE IN NORTH CHINA[J]. North China Earthquake Sciences, 1985, 3(4): 61-67.
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THE CHARACTERISTIC OF SEISMICITY BELT BEFORE MODERATE STRONG EARTHQUAKE IN NORTH CHINA

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    • Abstract
  • Most of moderate strong shocks occur in active fault belt.It is important to stu-dy stress state of these seismic belt and temporal-spatial characteristic of earthquakes in the belt for exploring precursor information before large shock.Based on analysis of seismicity in seismic area before M≥6 earthquake in North China since 1970, it is shown that spatial distribution of moderate and micro-earthquakes trends to converge-nce towards the belt in 2-3 years before large shocks, and diverge outward belt in 1-2 seasons before shock.The tendency provides some information for earthquake prediction.
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