摘要
为了预言并且评估 ionospheric 修正份量上,电子温度和密度的效果,不安以不同加热条件被分析,基于包括动量方程,连续性方程和精力方程的一个发达模型。(1 ) 强大的 HF 收音机波浪能引起电子温度显著地增加的结果表演,和最大的不安在思考层附近,但是电子密度在这个区域减少;(2 ) 越多在电离层降低中立煤气的密度,越电子温度和密度的 larger 骚乱;越高收音机频率,越多降低电子温度的增长;并且越高收音机力量,越电子温度和密度的 larger 骚乱被引起,但是在收音机力量和骚乱振幅之间没有线性关系;(3 ) 在夜间的不安比在 HF 加热的白天无线电与一样的力量飘动的大;在太阳的最小的电子温度不安在太阳的最大值比那大;并且在春天和秋天的电子温度不安比在冬季和夏天大;(4 ) 与相比低纬度,中间纬度有更小的不安,最大的电子温度不安是 30%( 在冬季的白天) ,并且密度是 5% 。
To predict and evaluate the effects of ionospheric modification quantitatively, the electron temperature and density perturbations are analyzed at different heating conditions, based on a developed model including momentum equation, continuity equation and energy equation. The results show that (1) powerful HF radio waves can cause the electron temperature to increase markedly, and the largest perturbation is near the reflection layer, but the electron density decreases at this area; (2) the lower neutral gas density in the ionosphere, the larger disturbance of the electron temperature and density; the higher radio frequency, the lower increment of electron temperature; and the higher radio power, the larger disturbance of electron temperature and density are caused, but there are no linear relationships between the radio power and disturbance amplitude; (3) the perturbations at nighttime are larger than at daytime when heated by HF radio waves with the same powers; the electron temperature perturbations in the solar mini- mum are larger than that in solar maximum; and the electron temperature perturbations in spring and autumn are larger than in winter and summer; (4) compared with the low-latitude, the mid-latitude has the smaller perturbations, the maximum electron temperature perturbation is -30% (at daytime of winter), and the density is -5%.
基金
supported by the National Natural Science Foundation of China(40505005)
the Specialized Research Fund for State Key Laboratories