陇县地震台电磁扰动数据变化规律及影响因素分析  

Analysis of Variations and Influencing Factors of Electromagnetic Disturbance Data at Long County Seismic Station

作　　者：李远林 LI Yuanlin(Baoji Earthquake Agency,Baoji,Shaanxi 721004)

机构地区：[1]陕西省宝鸡市地震局,陕西宝鸡721004

出　　处：《山西地震》2023年第4期45-51,共7页Earthquake Research in Shanxi

摘　　要：对陇县地震台电磁扰动仪2019至2021年的数据变化规律及成因进行分析,发现电磁扰动值的年变和日变形态与气温呈明显的负相关,探讨电磁扰动异常变化的影响因素发现,陇县台电磁扰动对发生在台站一定距离内中强以上地震的同震效应显著;另外观测数据还容易受到雷电、强降雨、大功率电器等因素的影响。通过总结不同干扰因素的影响形态,为迅速排除干扰及正确识别前兆异常提供依据。Analysis of variations and influencing factors of electromagnetic disturbance data at Long County Seismic Station from 2019 to 2021.It is believed that the annual and diurnal variations of electromagnetic disturbance values were found to exhibit a significant negative correlation with temperature.The study explores the influencing factors of electromagnetic disturbance abnormal changes and finds that the electromagnetic disturbance at Long County station exhibits significant coseismic effects for moderate to strong earthquakes occurring within a certain distance from the station.Additionally,the observation data can be easily affected by factors such as lightning,heavy rainfall,and high-power electrical appliances.By summarizing the influence patterns of different interference factors,it provides a basis for rapid interference elimination and accurate identification of precursor anomalies.

关 键 词：干扰因素 电磁扰动 同震效应 观测数据 

分 类 号：P315.72[天文地球—地震学]