电离层－热层耦合系统中由中性风引起的F区运动

NEUTRAL WIND-INDUCED F REGION MOVEMENTS UNDER THE COUPLING OF IONOSPHERE-THERMOSPHERE

利用一种时变电离层剖面的数值模型，研究电离层最大电子浓度所在高度对热层子午风变化的响应．对武昌（３０．５°Ｎ，１１４．４°Ｅ）和Ｗａｋｋａｎａｉ（４５．４°Ｎ，１４１．７°Ｅ）讨论三种不同类型的风场对峰高的控制作用．结果表明：（１）峰高对中性风的响应过程，存在南北方向不对称性、日夜不对称性和纬度差异．在真实背景大气下，热层与电离层通过风场强烈耦合．（２）由伺服理论推算的风场基本上是合理可靠的．（３）水平风模式ＨＷＭ－９０在所关心的地区，大致能反映实际子午风状况，但合理程度不及伺服理论的风场．

Responses of ionospheric F2 peak to three types of meridional winds,namely constant winds,Servo Model-based winds and HWM-90 winds,are investigated numerically for Wuchang (30.5'N,114.4'E) and Wakkanai(45°5,N,141.7°E),with the help of a theoretical model for one-dimensional and time dependent ionospheric profile.The results indicate thats(1) the response is north-south and day-night asymmetrical,and the latitudinal difference is obvious as can be expected.It shows that within an actual atmosphere background,the ionosphere-ther.mosph#re may be strongly coupled through the neutral wind.(2) The Servo Model-based meridional wind is verified to be reasonable and reliable.(3) HWM-90 gives a passable description of the meridional wind for the two stations concened,while it looks not so good as the Servo Model-based wind.