2018
DOI: 10.1029/2018sw001927
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Analysis of the Solar Flare Effects of 6 September 2017 in the Ionosphere and in the Earth's Magnetic Field Using Spherical Elementary Current Systems

Abstract: The interval 4-10 September 2017 was one of the most flare-productive periods of the solar cycle 24, producing strong-to-severe space weather episodes. Thus, on 6 September, the solar active region AR 30023 produced an X-9 level flare. The arrival of the associated coronal mass ejection produced severe geomagnetic storming on 7 and 8 September, preceded by two significant solar flare effects (Sfe) that could be seen in the lit hemisphere. In this article, we analyze the impact of these flares on the ionosphere… Show more

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Cited by 35 publications
(43 citation statements)
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“…In general, the solar and geomagnetic activity conditions for 4-11 September 2017 have been described as complex largely due to the occurrence of multiple solar flares of different classes (e.g., Curto et al, 2018;Mosna et al, 2020;Yasyukevich et al, 2018) and storm-related activity that led to two consecutive Dst minima separated by about 13 hr on the same day (e.g., Aa et al, 2019;Lei et al, 2018). Figure 2 shows changes in (a) solar wind velocity, V sw (m/s), and B z component of the interplanetary magnetic field, IMF B z (nT); (b) auroral electrojet, AE (nT) index and SYM-H (nT) index equivalent to high-resolution Dst index (Wanliss & Showalter, 2006); and (c) the interplanetary electric field, The black vertical straight lines on Figure 3a show the occurrence time of the two solar flares X2.2 and X9.3 at 0910 UT and 1158 UT, respectively, on the 6 September 2017 (e.g., Curto et al, 2018;Li et al, 2018;Mosna et al, 2020;Yasyukevich et al, 2018). As indicated in Figure 2, the first sudden storm commencement occurred on 6 September 2017 at 2343 UT, while both main and recovery phases were on 8 September 2017.…”
Section: Solar Wind and Geomagnetic Activity Conditionsmentioning
confidence: 99%
“…In general, the solar and geomagnetic activity conditions for 4-11 September 2017 have been described as complex largely due to the occurrence of multiple solar flares of different classes (e.g., Curto et al, 2018;Mosna et al, 2020;Yasyukevich et al, 2018) and storm-related activity that led to two consecutive Dst minima separated by about 13 hr on the same day (e.g., Aa et al, 2019;Lei et al, 2018). Figure 2 shows changes in (a) solar wind velocity, V sw (m/s), and B z component of the interplanetary magnetic field, IMF B z (nT); (b) auroral electrojet, AE (nT) index and SYM-H (nT) index equivalent to high-resolution Dst index (Wanliss & Showalter, 2006); and (c) the interplanetary electric field, The black vertical straight lines on Figure 3a show the occurrence time of the two solar flares X2.2 and X9.3 at 0910 UT and 1158 UT, respectively, on the 6 September 2017 (e.g., Curto et al, 2018;Li et al, 2018;Mosna et al, 2020;Yasyukevich et al, 2018). As indicated in Figure 2, the first sudden storm commencement occurred on 6 September 2017 at 2343 UT, while both main and recovery phases were on 8 September 2017.…”
Section: Solar Wind and Geomagnetic Activity Conditionsmentioning
confidence: 99%
“…Currently, a test dataset for the years 2003-2005 and 2017 and its description is available for download (Matzka et al, 2019). These years were chosen to include the Halloween storm in 2003 and a large number of moderate geomagnetic storms (in 2005) as well as the recent geomagnetic storm in September 2017 (e.g., Curto et al, 2018). It should be noted that the published test dataset of Hp is a version of the index that…”
Section: The Viscous Schemementioning
confidence: 99%
“…The 25 associated interplanetary coronal mass ejections collided with Earth's magnetosphere and caused the most intense magnetic storm of the recent solar cycle. The storm produced strong geomagnetic disturbances, ionospheric effects, magnificent auroral displays, elevated hazards to power systems and unstable HF radio wave propagation (Chertok et al, 2018;Clilverd et al, 2018;Curto et al, 2018;Yasyukevich et al, 2018).…”
Section: Space Weather Conditions On 6-9 September 2017mentioning
confidence: 99%