Analysis of ionospheric irregularities during total solar eclipse 2016 based on GNSS observation

International Symposium on Sun, Earth, and Life

物理学;天文学;生物科学

Husin, A.^1 ; Jiyo^1 ; Anggarani, S.^1 ; Ekawati, S.^1 ; Dear, V.^1

Space Science Center, National Institute of Aeronautics and Space, Jl. Dr Junjunan 133, Bandung, Indonesia^1

关键词: Dual frequency receivers;    Eclipse periods;    Global Navigation Satellite Systems;    Ionospheric irregularities;    Percentage deviation;    Time resolution;    Total electron content;    Total solar eclipse;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/771/1/012035/pdf
DOI  :  10.1088/1742-6596/771/1/012035

来源: IOP

【 摘 要 】

A total solar eclipse occurred over Indonesia in the morning hours on 9 March 2016. Ionisations in the ionosphere which is associated with the solar radiation during the total eclipse provided a good opportunity to study the ionospheric irregularities. Using global navigation satellite system (GNSS) data taken from dual-frequency receivers in Manado, we investigated and analysed the total electron content (TEC) perturbations with a time resolution of 60 s to reveal ionospheric irregularities during total eclipse. Result showed that TEC conditions based on IPP were decreased during solar eclipse on March 9, comparing with the neighbour day. The maximum percentage deviation (DTEC) from the average value during eclipse period, 00:00 - 02:40 UT reach -41.5%. The duration of maximum decrement in TEC occurs were around 2-30 minutes after the maximum obscuration.