A Detection Study of the Ionospheric Total Electron Contents Variations Using GPS Network

Journal of Astronomy and Space Sciences

Sang-Jeong Lee¹  Byung-Kyu Choi²  Jong-Uk Park² 

[1] Dept. of Electronics Engineering, Chungnam University, Daejeon 305-764, Korea;GNSS Technology Group, Korea Astronomy & Space Science Institute, Daejeon 305-348, Korea;

关键词: ionosphere;    GPS network;    total electron content;    magnetic storm;   

DOI  :  10.5140/JASS.2007.24.4.269

来源: DOAJ

【 摘 要 】

We established a regional ionospheric model for investigating ionospheric TEC (Total Electron Contents) variations over the Korean Peninsula during major geomagnetic storms. In order to monitor the ionospheric TEC variations, we used nine permanent GPS reference stations uniformly distributed in South Korea operated by the Korea Astronomy and Space Science Institute (KASI). The cubic spline smoothing (CSS) interpolation method was used to analyze the characteristics of the ionospheric TEC variations. It has been found that variations of TEC over the Korean Peninsula increase when a major geomagnetic storm occurred on November 20, 2003. The TEC has increased about one and a half of those averaged quite days at the specific time during a geomagnetic storm . It has been indicated that the KASI GPS-derived TEC has a correlation with the geomagnetic storm indices (eq. Kp and Dst indices).

【 授权许可】

Unknown