中国部分地区电离层临界频率的研究

中国部分地区电离层临界频率的研究 F 2 LAYER CRITICAL FREQUENCY VARIATION IN CHINA 何劲 He Jin Huang Tianxi 1 first-author 黄天锡 1 武汉大学空间物理系 武汉大学空间物理系 Department of Space Physics,Wuhan University Department of Space Physics,Wuhan University 本文采用旬滑动平均法,从设在南中国海口、广州、重庆三垂测台站和北中国兰州、北京、长春、乌鲁木齐、满洲里五垂测台站所获得的8万个数据中,分析了1964～1976年期间 F 2 层临频率正午值,子夜值的季节变化和逐年变化以及它们同太阳黑子数的关系。并将南北中国各台站临界频率变化进行了对比分析。 In this paper,by using ten-days smoothing method,eighty thousand iono- spherie data have been treated.These data were observed at 8 ionosonds in China during the period of 1964 throughout 1976.The using data,have been used to analyse,F 2 layers critical frequencys with seasonal and annual variations.The statistical results show the relationship between critical fre- quency and sunspot number At last,the similarity and diversity of the iono- spheric features over the south China was compared with that over the north china. 电离层纬度变化 电离层临界频率 太阳黑子周期 太阳黑子数 季节异常 latitude variation of the ionosphere ionospheric critical frequeney sunspot cycle sunspot number seasonal anomaly 1991-04-01 2021-04-01 4