A theoretical analysis of global characteristics of spread-F  

作　　者：Zuo Xiao Tianhua Zhang 

机构地区：[1]Peking Univ, Dept Geophys, Beijing 100871, Peoples R China

出　　处：《Chinese Science Bulletin》2001年第19期1593-1595,共3页

基　　金：This work was supported by the National Natural Science Foundation of China (Grant Nos. 49874041 and 49990454).

摘　　要：Spread-F is an important ionosphere pheonome-non and it has much effect on radio wave propogation. Taking magnetic inclination and declination into consideration, a theoretical model is deduced for the linear growth-rate of spread-F. It is a generalization of the earlier equatorial model and a relatively complete description o f the spread-F pheonomenon. This theory shows that the magnetic configuration, i.e. the magnetic strength, inclination and declination, affects the occurrence rate greatly, which forms some regional distribution characteristics of the spread-F.Spread-F is an important ionosphere pheonomenon and it has much effect on radio wave propogation. Taking magnetic inclination and declination into consideration, a theoretical model is deduced for the linear growth-rate of spread-F. It is a generalization of the earlier equatorial model and a relatively complete description of the spread-F pheonomenon. This theory shows that the magnetic configuration, i.e. the magnetic strength, inclination and declination, affects the occurrence rate greatly, which forms some regional distribution characteristics of the spread-F.

关 键 词：SPREAD-F IRREGULARITIES GLOBAL characteristics. 

分 类 号：P352[天文地球—空间物理学]