基于相似系统理论的地震危险性分析

Seismic risk analysis based on similarity system principle

不同地区地震危险性的产生机制具有相似性，地震危险性可由若干地震活动性指标（要素）加以描述，因此，这些指标特性的相似性反映了地震危险性大小的差异。为此，给出了一种计算相似度的新方法，并用这一方法对若干地区的地震危险性进行了评价，结果令人满意。

The mechanisms of seismic risk in different regions have some similarilties. Seismic risk can be described with some indices of seismicity which similarity reflects the difference of seismic risk. A new method calculating the similarity degree is established, based on which seismic risks of a few regions are evaluated. Satisfactory results are obtained.