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观测地壳电阻率随时间变化并研究这种变化与地震的关系,这是当前地电阻率方法的工作内容。20世纪六十年代以来,苏联、美国、日本和中国开展了此项研究工作。苏联从1965年开始在中亚加尔姆实验场用偶极装置进行地电阻率测量。在帕米尔山区采用供电电流达100安培、偶极中心距为6公里的装置,1967～1970年间在震中距小于10公里的中强地震前观测到地电阻率15～18%的下降异常;后来用功率为12～15兆瓦的磁流体发电设
Observing changes in the crustal resistivity over time and studying the relationship between this change and earthquakes is the work of the current earth resistivity method. The research was carried out by the Soviet Union, the United States, Japan and China since the 1960s. The Soviet Union from 1965 began in the Central Asia Garm experimental site with dipole device for the resistivity measurement. In Pamir Mountain, a device with a current of 100 A and a dipole center distance of 6 km was used. Before 1948-1970, a descending anomaly of earthquakes of 15-18% was observed before the moderate-strong earthquakes less than 10 km in epicentral distance. With power of 12 to 15 MW of magnetic fluid power plant