浅析大姚及相邻地区地表水分与地震的关系  

The relationship between precipitation and earthquakes around Dayao area

作　　者：余晓红 王家翠 

机构地区：[1]云南省大姚县地震局,云南大姚675400

出　　处：《四川地震》2015年第1期25-28,共4页Earthquake Research in Sichuan

摘　　要：地表水分主要来源于降雨和水库蓄水的渗透,通过对大姚及相邻地区近20来年的地震活动与降雨和水库蓄水进行相关性分析研究认为,地下水大面积、大幅度上涨,与水分荷载和孔隙水压效应的叠加,是驱使大姚及邻区孕震体进入不稳定状态乃至失稳而产生地震的重要原因,也是开展地震预报的重要指标。Groundwater is mainly from precipitation and reservoir. Here we study the relationship between earthquakes and groundwater level around Dayao area. The result shows that the increase of both groundwater level and the flood area will lead to the increase of rock pore pressure. It is an important reason for the instability of seismogenic body to cause an earthquake occurred in Dayao County. The vast area of flood may be an important indicator for earthquake prediction.

关 键 词：水分荷载 孔隙水压 孕震体 预测预报 

分 类 号：P315.723[天文地球—地震学]