空间科学学报2026，Vol.46Issue(3)：618-627,10.DOI:10.11728/cjss2026.03.2025-0128
2013年7月13-14日磁暴期间中国低纬电离层不均匀体的时空演化
Case of the Ionospheric Irregularities in China Low Latitude during the Geomagnetic Storm on 13-14 July 2013
摘要
Abstract
This study investigates the effects of a moderate geomagnetic storm during 13-14 July 2013 on the development of ionospheric irregularities in the low latitude region of China.Although in the East Asian sector,ionospheric irregularities are relatively uncommon in July,unseasonal irregularities are observed during this geomagnetic storm.Ground-based GNSS data from Crustal Movement Observa-tion Network of China(CMONOC)and Hong Kong Satellite positioning Reference stations(SatRef),S4 index data from the Ionospheric Scintillation Monitor(ISM)at Shenzhen(22.59°N,113.97°E)station,ionosonde data from Fuke(19.4°N,109.0°E)station,and geomagnetic data are used to show the evolu-tion of the ionospheric irregularities in the low latitude region of China during the geomagnetic storm.Geomagnetic and solar activity parameters are used to analyze the generation mechanisms of the irregu-larities.It is shown that the eastward electric field enhanced by the geomagnetic storm is the major fac-tor contributing to the generation of the irregularities.Satellite traces in the ionograms before the onset of the irregularities indicate that large-scale wave structures acting as seed perturbations may also con-tribute to this event.Furthermore,it is found that the temporal distribution of S4 index and ROTI are generally similar(enhanced during 15:00-18:00 UT)and coincide with the time range of the irregulari-ties,but the distribution of L2 loss of lock is slightly different(occurring around 14:00 UT,about one hour earlier).These loss of lock occurrences are unrelated to this event.关键词
电离层不均匀体/电离层闪烁/磁暴/总电子含量(TEC)/频高图Key words
Ionospheric irregularities/Ionospheric scintillation/Geomagnetic storm/Total electron content/Ionogram分类
天文与地球科学引用本文复制引用
高鸿宇,张东和,张雅彬,田耀宇,李科..2013年7月13-14日磁暴期间中国低纬电离层不均匀体的时空演化[J].空间科学学报,2026,46(3):618-627,10.基金项目
电波环境特性及模化技术国家重点实验室基金项目(6142403240301),国家自然科学基金项目(42474206)和子午工程项目共同资助 （6142403240301）
