【摘要】 基于2014—2019年四川气象监测的雷电大气静电场资料,研究了同期四川M_S≥5.0地震前的异常信息。结果显示,50%的M_S≥5.0地震前,大气静电场日均值有异常变化,主要表现为低值突跳,异常形态呈多样性,较突出的有不规则"W""V""U"型等。日均值低值异常出现后114天r=e~M空间范围内发生M_S≥5.0地震的可能性较大,其中,第10—19天,发震概率为33%;第2—9天,发震概率为17%。基于气象雷电监测的大气静电场观测资料,在排除雷电等干扰的情况下,可用于地震监测预报。更多还原

【Abstract】 Based on the data of lightning atmospheric electrostatic field monitored by Sichuan meteorological from 2014 to 2019,the anomaly information before M_S≥5.0 earthquakes in Sichuan Province in the same period is studied.The results show that before half of the M_S≥5.0 earthquakes,the daily mean value of the atmospheric electrostatic field shows abnormal changes,mainly appearing as low-value sudden jumps with diverse anomaly forms.Typical anomaly forms include irregular “U”,“V” and “W” shapes.After the occurrence of a low-value anomaly of daily mean value,there is a high possibility of M_S≥5.0 earthquake within the distance of R=e~M in 114 days,of which the probability of earthquake occurrence is 33% from day 10 to day 19 and 17% from day 2 to day 9.The observation data of atmospheric electrostatic field monitored by meteorological lightning observation can be used for earthquake monitoring and prediction after removing interference such as lightning.更多还原