西安台地电阻率异常的分析

AN ANALYSIS OF EARTH-RESISTIVITY ANOMALIES OF XIAN STATION

摘要:

西安台地电阻率自1975年8月开始观测以来,出现了长趋势的下降异常及在趋势下降的背景上又迭加了两个负异常。趋势下降与西安地区地裂缝活动、西安地区构造性下陷以及承压水位的下降明显相关,两个负异常则与地裂缝的两次加速活动以及构造性运动由下陷转变为抬升有关。

Abstract:

There are many factors which influence the earth-resistivity of Xian station. But the tendency to decrease and the two lowering bow anomalies on the background are the truev arieties of the earth-resistivity in this area. The tendency to decrease is dependent on the cavein of the earth's surface, the creep of the earth's surface crevice and the drop of the level of load-bearing water in Xian area. The two lowering bow anomalies are closely related with reverse varieties of the earth's surface deformation and the accelerative activity of the earth's surface crevice in the area.