昆明站电离层闪烁形态与海口站的对比分析

Contrastive analysis for ionospheric scintillation morphology over Kunming and Haikou station

对昆明站和海口站2004年1～12月的GPS电离层闪烁形态进行了对比分析。结果表明，昆明站的闪烁频率和强度均弱于海口站，其闪烁发生的时间比海1：2站晚大约一小时，昆明站将近90％的闪烁事件发生在观测站以南，仅个剐事件发生在北向，而海口站闪烁事件发生在南向的不到70％。这充分体现了昆明站的地域特性及赤道异常区电离层不规则结构发展特性。

A contrastive analysis for GPS ionospheric scintillation morphology during Jan.-Dee. 2004 over Kunming and Haikou station were performed. The results show that, compared with Haikou station, the occurrence rate and the intensity of scintillations over Kunming station are reduced; the onset time of scintillations an hour later. Nearly 90% of the scintillations over Kunming station occur in the south of the station besides separate activities, while less than 70% occur in the south over Haikou station. All above indicate that the regional properties of Kun- ruing station and the evolution characteristics of ionospheric irregularities in the equatorial anomaly.