以上海地区的3 个地电场观测台站的资料为例，结合地电场多极距观测原理对地电场信号异常进行识别分析。结果表明，利用地电场多极距观测装置系统和分析方法可以有效识别并区分地电场观测中的电极极化干扰、雷击干扰、高压直流输电干扰、电离层扰动干扰和自然电场异常等信号。

In this paper，the abnormal variations of geoelectric field observed at three stations in the Shanghai area are studied by the principle of multi-dipole observation system of geoelectric field，and the different types of interference of geoelectric field are distinguished． The results show that the multi-dipole observation system of geoelectric field and the analysis method can effectively recognize the abnormal signal of Electrode polarization interference， Lightning interference，HVDC transmission interference， ionospheric disturbances， and abnormities of spontaneous electric field．

地震科技星火计划( XH12016) 及上海市科研计划项目( 12231202700) 共同资助