地下流体短期前兆典型特征分析

Studying on Typical Characters of Fluid Short-Term Precursory

分析了地震地下流体短期前兆异常资料 ,总结了转折型和单一型两类典型前兆的特征。通过对华北 (含西北 )和西南不同区域前兆特征的研究发现 :在空间分布上 ,这两类前兆表现出与构造分布的密切关系 ;在比例关系上 ,前兆异常会随着震级的不同而表现出数量上的差异性。

The underground fluid short-term anomalies of earthquake were studied. Two kinds of typical characters of precursory, turn around and single patterns, were summarized. Through studying regional characters both in north China (including northwest) and southwest China, the authors found that two kinds of precursory are well relation to geological engineering in spatial distribution and they show-varying characters with size of earthquake varying in proportion.