音频大地电磁EH4法在新疆某地地下水资源勘查中的应用

Application of Audio Magnetotelluric EH4 Method in a Groundwater Resources Exploration in Xinjiang

该文以新疆伊犁河谷西部平原区的地下水勘查为例,通过音频大地电磁法成果,从电阻率异常形态、高低阻变化以及平面电阻率等值线异常特征等方面进行了分析,并结合钻孔资料,对该区地层划分、构造位置、基底形态及地下水富水分布情况进行了推断,为进一步寻找地下水资源提供了地球物理依据。

In this paper,taking the groundwater exploration in the western plain area of Yili River Valley in Xinjiang as an example,through the results of audio magnetotelluric method,the anomalous form of resistivity、change of high and low resisitivity、and the abnormal characteristics of contour lines of plane resistivity and so on are analysed. And combined with the drilling data,the stratigraphic division,tectonic location,basement morphology and distribution of rich water of underground water are inferred. The geophysical basis is provided for further exploration of groundwater resources.