Detection of solar flare using IGS network stations: case study for September 6, 2017
This research shows the viability of using GNSS (Global Navigation Satellite System) stations from IGS (International GNSS Service) network in the detection of solar flare. For this it was considered a flare of class X9.3 occurred on September 6, 2017 as a case study. If the flare is in the directio...
| Principais autores: | Pereira, Vinícius Amadeu Stuani, Monico, João Francisco Galera, Camargo, Paulo de Oliveira |
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| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
Universidade Tecnológica Federal do Paraná (UTFPR)
2021
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| Acesso em linha: |
http://periodicos.utfpr.edu.br/rbgeo/article/view/13418 |
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| Resumo: |
This research shows the viability of using GNSS (Global Navigation Satellite System) stations from IGS (International GNSS Service) network in the detection of solar flare. For this it was considered a flare of class X9.3 occurred on September 6, 2017 as a case study. If the flare is in the direction of Earth, a series of events in the ionosphere may occur, which are called Sudden Ionospheric Disturbances (SID). Among the SID there is the Sudden Increases in the Total Electron Content (SITEC). This immediate variability of the TEC can be estimated from the ROTI index. Since the electromagnetic radiation takes about eight minutes to reach the Earth, the ROTI is presented as a great solar flare detector. In this sense, ROTI was estimated for several IGS stations. It was verified that there was an increase in ROTI in the period of the solar flare and in the equatorial region of the Sun-oriented Earth. Detection of an Earth-directed solar flare is of great interest for the GNSS positioning and Space Weather, since, probably after a flare, there will be geomagnetic and ionospheric storms within few days (as occurred on 7 and 8 September), which will deteriorate the positioning accuracy. |
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