【摘要】 该文对陕西乾陵地震台地电场日变化特征和常见的干扰因素进行分析。研究结果表明,地电场静日变化具有较为典型的单峰双谷形态,在发生地电暴时,高频成分明显增加,日变幅比静日有较大幅度的增加;存在的干扰主要是高压直流输电干扰、工业游散电流影响等;也有大风、降雨和雷电自然因素干扰;高压直流输电影响幅度的大小与入地电流的大小、距离及地下介质等因素有关;其他方面的干扰,是局部、短时间内电磁环境的变化而影响地电场的变化。更多还原

【Abstract】 The diurnal variation characteristics of geoelectric field and common interference factors at Qianling Seismic Station in Shaanxi province are analyzed in this paper. The results show that the static diurnal variation of geoelectric field has a typical form of single peak and double valley. When a geoelectric storm occurs, the high frequency component increases obviously and thediurnal variation amplitude increases considerably compared with the static diurnal variation. The main disturbances are HVDC transmission interference, industrial drifting current influence, and natural factors such as gale, rainfall and thunder and lightning.The magnitude of influence of HVDC is related to the magnitude, distance and underground medium of ground current, and other disturbances are the changes of local and short time electromagnetic environment which affect the changes of geoelectric field.更多还原