龙岩台GM4与FHD干扰因素对比分析

Comparative Analysis of Interference Factors of GM4 and FHD in Longyan Seismic Station

通过对龙岩台地磁GM4与FHD两套仪器在不同方向、不同距离受车辆、大型机械、高压直流等产生的干扰进行对比分析,作重研究了围墙外车辆停放或驶离过程中对仪器各分量产生的干扰原因,总结GM4与FHD两套仪器受车辆、大型机械、高压直流等干扰影响时的典型形态特征和日常处理方法 ,以便提高判断地磁干扰成因的能力和日常处理、剔除干扰的能力,为提高地磁观测资料质量服务。

GM4 and FHD are disturbed by many factors in different directions and different distance, such as vehicles, large machinery, high voltage DC in Longyan seismic station. Based on the comparative analysis, the paper focused on the causes of interference from vehicles which is parking outside or leaving soon. The typical morphological characteristics and processing methods of interference effect of GM4 and FHD by vehicles, large machinery, high voltage DC are summarized, so as to improve the ability of judgment and processing of daily geomagnetic disturbance causes and eliminate interference, which is useful for the service quality of geomagnetic observation data.