The response of TEC at quasi-conjugate point GPS stations during solar flares |
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Authors: | Siti Aminah Bahari Mardina Abdullah Baharudin Yatim |
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Institution: | 1.Institute of Space Science,Universiti Kebangsaan Malaysia,Bangi,Malaysia;2.Department of Electrical, Electronic and Systems Engineering,Universiti Kebangsaan Malaysia,Bangi,Malaysia;3.School of Applied Physics, Faculty of Science and Technology,Universiti Kebangsaan Malaysia,Bangi,Malaysia |
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Abstract: | Global Positioning System (GPS) derived total electron content (TEC) measurements were analyzed to investigate the ionospheric
response during the X-class solar flare event that occurred on 5-6 December 2006 at geomagnetic conjugate stations: Syowa,
Antarctica (SYOG) (GC: 69.00°S, 39.58°E; CGM: 66.08°S, 71.65°E) and árholt, Iceland (ARHO) (GC: 66.19°N, 342.89°E; CGM: 66.37°N,
71.48°E). Bernese GPS software was used to derive the TEC maps for both stations. The focus of this study is to determine
the symmetry or asymmetry of TEC values which is an important parameter in the ionosphere at conjugate stations during these
solar flare events. The results showed that during the first flares on 5 December, effects were more pronounced at SYOG than
at ARHO. However, on 6 December, the TEC at ARHO showed a sudden spike during the flare with a different TEC variation at
SYOG. |
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