桂林电子科技大学学报Issue(2)：127-131,5.
赤道异常特征对桂林地区L波段电离层闪烁逐日变化的影响
The influence of EIA features on the day-to-day variability of L-band ionospheric scintillations at Guilin
摘要
Abstract
In order to study the reason of the day-to-day variability of L-band ionospheric scintillations at Guilin,the influ-ences of equatorial ionization anomaly (EIA)features along 110°E longitude on the day-to-day variability of L-band iono-spheric scintillations at Guilin (geographic coordinates:25.29°N,110.33°E;geomagnetic coordinates:15.04°N,181.98°E) have been investigated under quiet geomagnetic conditions on the basis of L-band ionospheric scintillations data obtained by an ionospheric scintillation monitor GSV4004 installed at Guilin and the global vertical total electron content (VTEC)data provided by the international GNSS service (IGS).The results show that the EIA features along 110°E longitude in scintilla-tion days are very different from those in non-scintillation days.The resurgence-like features of EIA during the post-sunset period are much more pronounced in scintillation days.Namely,VTEC at the crest of EIA is larger in scintillation days,the ratio of VTEC crest to VTEC trough is larger in scintillation days,the VTEC gradient in the regions between VTEC crest and trough is larger in scintillation days,the duration of the resurgence-like features of EIA lasts longer in scintillation days, and the latitude of the north crest of the resurgent EIA is higher in scintillation days.关键词
L波段电离层闪烁/闪烁逐日变化/赤道异常Key words
L-band ionospheric scintillations/day-to-day variability of scintillations/equatorial ionization anomaly (EIA)分类
天文与地球科学引用本文复制引用
汪文君,邹玉华,李娇..赤道异常特征对桂林地区L波段电离层闪烁逐日变化的影响[J].桂林电子科技大学学报,2015,(2):127-131,5.基金项目
国家自然科学基金(41464005) （41464005）
广西自然科学基金(2014GXNSFAA118374) （2014GXNSFAA118374）
