摘要
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.
出处
《武汉大学学报（自然科学版）》
CSCD
1991年第4期53-60,共8页
Journal of Wuhan University(Natural Science Edition)
关键词
电离层
临界频率
太阳黑子数
latitude variation of the ionosphere
ionospheric critical frequeney
sunspot cycle
sunspot number
seasonal anomaly
