基于雷电监测的大气电场地震短临异常研究

Study on the Short-Impending Anomaly before Earthquakes of Atmospheric Electric Field Based on Lightning Monitoring

摘要: 本研究通过对2014年至2019年基于雷电监测的大气电场观测资料的分析，发现同期在四川省的16次中强地震前，在排除雷电干扰的情况下，存在以下特征：1) 日均值呈低值异常变化；2) 日均值的异常变化形态呈不规则的“W”型、“V”型及“U”型变化；3) 日均值低值异常出现后，第10天至19天时间范围内，周围r = eM空间范围内发生中强以上地震的概率为33%。

Abstract: In this study, through the analysis of the observational data of atmospheric electric field based on lightning monitoring from 2014 to 2019, it was found that before the 16 moderate and strong earthquakes in Sichuan Province, in the case of eliminating lightning interference, the following characteristics existed: 1) Daily mean values have anomalous variations of low values; 2) The trend of daily mean values have irregular “W”, “V” and “U” anomaly; 3) After the anomalous low value of daily mean, the probability of occurrence of moderate and strong earthquakes is 33% in r = eM space from the 10th day to the 19th day.