南极中山站电离层变化特性分析

本文详细地分析了１９９０年３月至１９９１年２月南极中山站电离层Ｆ２层临界频率ｆｏＦ２、Ｆ层最低虚高ｈ＇Ｆ的变化特性。分析结果表明,中山站的ｆｏＦ２日变化不呈现明显的ＵＴ效应,季节变化具有冬季异常特征。ｈ＇Ｆ的夏季曲线和冬季曲线呈现出十分不同的图样。文章的最后给出了若干典型的电子浓度剖面分布。

Analyses of Ionospheric Properties Over Zhongshan Station Antarctica

The data of foF2 and h'F, which were obtained during March 1990 to February 1991 at Zhongshan station in Antarctica,are analysed in this paper. The results show that the seasonal variation of foF2 exists the winter anomaly. But the diurnal variation of foF2 has no evident UT effect. One important feature of diurnal variation of foF2 is the maximum value occurs at about 15:00 LT in all seasons. The most likely explanation for this is low-energy particles precipitation. For the h'F, it is very evident that the pattens in winter are quite different from those in summer. The "summer" patterns have evident diurnal variation, while the "winter" pattrens exhabit rather irregular. In the latter of the paper, some typical electron density profiles are also given.