Study of the Ionospheric Effects of Selected Cases of Solar Flares over Abidjan
作者机构：Laboratoire de Physique de l'AtmosphereUniversite Felix Houphouet Boigny Abidjan22 B.P.582 Abidjan 22Cote-d'Ivoire
出 版 物：《Journal of Physical Science and Application》 (物理科学与应用（英文版）)
年 卷 期：2018年第8卷第3期
页 面：18-25页
主 题：TEC ionospheric scintillation solar flare X-ray
摘 要：The present study investigates the changes in TEC(total electron content)and ionospheric scintillation index(S4)inferred from the GNSS data recorded at the SCINDA station of Abidjan(Latitude=5.34°N,Longitude=3.90°W)during and after a solar *** the course of 2014,a year of high solar activity,three(3)cases of extreme(X1.66)and moderate(M6.23 and M2.13)solar flares recorded in the months of September and December effects on the ionosphere have been studied using the X ray fluxes,the magnetic parameters(Vx,Bz,Dst),the ionospheric scintillation index S4 and TEC and its ROT(time rate of change).The ROT exhibits a prominent peak between ten(10)and twelve(12)minutes after the occurrence of the maximum peak of the time rate of change of the X-ray flux emitted during the *** ROT maximum value occurs simultaneously with an enhancement of the S4 *** perturbations of the solar flare on the TEC in the SCINDA station of Abidjan occur within 42 to 54 hours after an M-class solar flare and within 46 to 58 hours following an X-Class solar *** magnetic storms resulted from these flares show an increment of 20%on VTEC observed when compared to the average VTEC()computed from the most five(5)quietest days of the selected months.
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