利用线性回归法,分析河北省隆尧地电阻率和地下水位的关系,发现该地区地电阻率季节性年变和近年来显著的趋势上升变化与地下水位动态变化相关.调查发现,年降雨量减小和农业用水量增大引起该区地下水位下降,从而导致地电阻率发生趋势上升变化.
We analyzed the relationship between apparent resistivity at Longyao Seismic Station and ground water level by using the method of linear regression.The results show that it is well correlated between earth resistivity and ground water level,and the ascent of water level can cause the apparent resistivity to rise.Through the investigation of ground water at Longyao region,we find that the falling of ground water level is caused by the reducing of annual rainfall and the increasing of agricultural water.