【摘要】 本文对蒲城至东风、昆明、上海三条传播路径BPL地波场强监测数据进行了统计分析。给出了我国西北、东南、西南等效地面电导率σ在暖季与冬季的区别,以及由σ变化引起的低频地波二次相位因子变化的程度。更多还原

【Abstract】 This paper analyses the statistical data of monitoring the BPL groundwave field intensty on the three paths from pucheng to Dongfeng, kunming and shanghai. It shows the difference of the conductivity σ in the summer season and winter season on the northwest, southeast and southwest in China, and that the conductivity σ conducts the changes of the add phase factor of the low frequency groundwave.更多还原