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The 6 September 2017 X-class solar flares and their impacts on the ionosphere, GNSS and HF radio wave propagationстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 24 октября 2018 г.
- Авторы: Yury Yasyukevich, Elvira Astafyeva, Artem Padokhin, Vera Ivanova, Semen Syrovatskii, Aleksey Podlesnyi
- Журнал: Space Weather
- Том: 16
- Номер: 8
- Год издания: 2018
- Издательство: American Geophysical Union
- Местоположение издательства: United States
- Первая страница: 1013
- Последняя страница: 127
- DOI: 10.1029/2018SW001932
- Аннотация: On 6 September 2017, the Sun emitted two significant solar flares (SF). The first SF, classified X2.2, peaked at 09:10UT. The second one, X9.3, which is the most intensive SF in the current solar cycle, peaked at 12:02UT, and was accompanied by solar radio emission. In this work, we study ionospheric response to the two X-class SF, and their impact on the Global Navigation Satellite Systems (GNSS) and high-frequency (HF) propagation. In the ionospheric absolute vertical total electron content (TEC), the X2.2 SF caused an overall increase of 2-4 TECU on the dayside. The X9.3 SF produced a sudden increase of ~8-10 TECU at mid-latitudes and of ~15-16 TECU enhancement at low latitudes. These vertical TEC enhancements lasted longer than the duration of the EUV emission.In the deviation TEC, the two SF provoked sudden increases of ~0.2TECU and 1.3 TECU. Variations in TEC from geostationary and LEO GPS/GLONASS satellites show similar results with TEC derivative of ~1.3-1.7TECU/min for X9.3 and 0.18-0.24 TECU/min for X2.2 in the subsolar region.Further, analysis of the impact of the two SF on the GNSS-based navigation showed thatthe SF did not cause losses-of-lock in the GPS, GLONASS or Galileo systems, while the positioning error increased by ~3 times in GPS precise point positioning solution, and even more for the GLONASS solution. The two X-class SF had an impact on HF radio wave propagation causing blackouts at <30 MHz in the subsolar region and <15 MHz in the post-midday sector.
- Добавил в систему: Падохин Артем Михайлович