泾阳地磁台地磁观测干扰分析

Analysis of geomagnetic observation interference at Jingyang Geomagnetic Station

地磁观测作为地震前兆观测的主要手段之一,在前兆观测中较为成熟,其数据的准确和稳定对监测预报工作有很大影响。文章选取泾阳地磁台2022—2023年受干扰的地磁观测数据,对干扰形态、持续时间以及处理方法进行了分析。结果表明,泾阳台地磁观测数据干扰可以通过工作人员对观测环境的密切跟踪保护,发现干扰时可以在预处理地磁数据时剔除掉这些非天然变化,相对完整地保留天然地磁场数据。

Geomagnetic observation,as one of the main means of earthquake precursor observation,is relatively mature in precursor observation.The accuracy and stability of its data have a great impact on monitoring and forecasting work.This article selects geomagnetic observation data from Jingyang Geomagnetic Observatory from 2022 to 2023,and analyzes the interference forms,duration,and processing methods.The results indicate that the interference of geomagnetic observation data in Jingbalconies can be closely monitored and protected by the staff in the observation environment.When interference is detected,these non natural changes can be removed during the preprocessing of geomagnetic data,and the natural geomagnetic field data can be relatively intact.