TURKISH PHYSICAL SOCIETY 40th INTERNATIONAL PHYSICS CONGRESS, Muğla, Turkey, 2 - 06 September 2024, pp.269, (Summary Text)
Coronal Mass Ejections (CMEs) have been repeatedly launched from the AR3664
region, an active sunspot of the 25th solar cycle, and have crossed space at very high
speeds. Gannon geomagnetic storms, or G4 and G5 levels of geomagnetic storms,
occurred on May 10–11, 2024, due to these CMEs impacting the Earth's
magnetosphere. During these dates, there were also intense X-ray solar flare
explosions from the AR3664 region, approaching the solar maximum of the 25th
solar cycle. The ionosphere, a naturally occurring plasma layer that is ionized by
sunlight, exhibited both positive and negative anomalies in its Total Electron
Content (TEC) as a result of all these activities.
This paper examined comprehensively the space weather effects of the solar flare
events and CME bursts that produced the geomagnetic storms in the mid-latitude
region on May 10–11 using a variety of parameters (such as the flare index, F10.7
solar flux, sunspot number, and geomagnetic indices (Kp and Dst) and solar wind
parameters (density and speed). The TEC data from the mid-latitude ionosonde
stations Alpena AL 945 and Athena AT 148 was obtained from the Global
Ionosphere Radio Observatory (GIRO). The ionospheric change caused by the
Gannon geomagnetic storm was examined with Interquartile Range Methods (IQR).
This study will improve our perspective on severe geomagnetic storms affecting the
mid-latitude ionosphere.