The Effects of Gannon Geomagnetic Storms on the Mid- Latitude Ionosphere

Yege Y., Can Z.

TURKISH PHYSICAL SOCIETY 40th INTERNATIONAL PHYSICS CONGRESS, Muğla, Turkey, 2 - 06 September 2024, pp.269, (Summary Text)

  • Publication Type: Conference Paper / Summary Text
  • City: Muğla
  • Country: Turkey
  • Page Numbers: pp.269
  • Yıldız Technical University Affiliated: Yes

Abstract

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.