同步高度区电离层离子分布的半经验模型  

A Semiempirical Mode for Ionospheric Ions in the Synchronous Orbit Region

作　　者：史建魁[1] 刘振兴[1] 

机构地区：[1]中国科学院空间科学与应用中心,北京100080

出　　处：《科学技术与工程》2002年第4期29-31,共3页Science Technology and Engineering

基　　金：国家自然科学基金(40074042);(49834040)资助

摘　　要：以卫星观测资料为基础,采用理论模型和数值分析方法,研究了不同地磁活动条件下同步高度区O^+离子密度和通量密度的分布,主要结果为向阳侧O^+离子密度和通量密度较高,在背阳侧较低;K_p越大,O^+离子密度和通量密度及其沿经度的变化越大,理论值与半经验值之间的离差也越大;O^+离子密度和通量密度分别在经度120°和240°附近最小,K_p≥6时,在经度0°处最大,K_p<6时,分别在经度60°和300°附近最大。Basing on the satellite observation, the physical model and the numerical analysis method are used to study the O^+ ion's density and flux distribution with various geomagnetic activities. The main results show that:(1) The O^+ ion's density and flux are higher in the dayside than that in the night-side. (2) If the K_p is big, tbe variations of the density and flux of the ions versus longitude will be bigger and their differences between the values calculated and tbe values of the semiexperiential will be big. (3) The density and tbe flux have minimums at longitudes 120°and 240°, respectively, and have maximums at longitudes 0° when K_≥ 6and have maximums, respectively, at 60°and at 300°when K_p<6.

关 键 词：离子分布 半经验模型 电离层离子 同步轨道区 分布特征 

分 类 号：P421.34[天文地球—大气科学及气象学]