摘要
根据中纬Ｗａｋｋａｎａｉ站与低纬Ｏｋｉｎａｗａ站的垂测数据，得出电离层峰区垂直漂移的频谱结构．结果表明，漂移除具有周期在２４ｈ之内的潮汐分量外，低纬站还呈现出值得特别注意的２．１ｄ的周期振荡．作者认为，低纬垂直漂移的振荡行为，主要是电场的波动分量引起；这种波动电场包含潮汐振荡与行星波两日振荡的成分．峰值电子浓度的振荡最直接地是由中性大气温度控制；而峰高的波动起伏，则主要是电场振荡的结果．
The spectral structures of the vertical drifts at the F2 peak are obtained, by using the ionospheric data of a mid-latitude station WAKKANAI and a lower midlatitude one OKINAWA, with the help of the SERVO model. The results indicate that there exist 6 hours, 8 hours and 24 hours tidal componements in the vertical drifts due to the neutral wind and the electric field, especially, the 2-day wave is clearly present at OKINAWA. It is concluded, that the oscillations at the lower mid-latitude are mainly contributed to the fluctuations of the E-field, in which tidal and 2-day planetary waves are included. As for f0F2 and hmF2, the major parameters of the ionospheric F2-layer,it is suggested that the oscillations of the maximum density may be directly related to the neutral temperature variations, while those of the peak height may result from the electric field fluctuations.
出处
《地球物理学报》
SCIE
EI
CSCD
北大核心
1994年第1期10-16,共7页
Chinese Journal of Geophysics
基金
国家自然科学基金
关键词
等离子体
漂移
电离层
振荡
Plasma drift,2-day oscillation,SERVO model.
