Abstract：We study the observational data of the geoelectric field in northeast China and combined with the Songyuan MS5.7 earthquake on May 28, 2018, in Jilin. At the same time, we comparatively analyze the background, imminent and post-earthquake response time series changes of the natural electric field ESP and the telluric field ET around the epicenter. In the study area, we calculate the dominant direction of charge movement by applying the charge movement seepage model of rock fissure water. The results show that the natural electric field ESP in Suihua, Lindian, Zhaodong, and Wangkui show obvious small-amplitude sudden jumps or large-scale jumps before the earthquake, and 45° extrusion or tension anomalies feature occurred in the dominant direction of charge movement within 3 months before the earthquake.
LI Mengying,ZHANG Zhihong,JIAO Mingruo et al. Study on Variation Characteristics of Natural Electric Field in Songyuan MS5.7 Earthquake on May 28, 2018[J]. jgg, 2022, 42(12): 1276-1280.
