The Response of the Ionosphere to Different Levels of Geomagnetic Storms of CME Origin


Bayhan C., Can Z.

Turkish Physical Society 39th International Physics Congress, Muğla, Turkey, 31 August - 04 September 2023, pp.180

  • Publication Type: Conference Paper / Summary Text
  • City: Muğla
  • Country: Turkey
  • Page Numbers: pp.180
  • Yıldız Technical University Affiliated: Yes

Abstract

The Earth's ionosphere, a natural plasma, is located at an altitude of about 60 km to 1100 km above the earth's surface. The ionosphere varies depending on many factors such as solar activity, sunspots, phase of the solar cycle, geomagnetic storm, geographic location, season, time of day. The response of the ionosphere to the formed geomagnetic storms manifests itself as a positive or negative ionospheric storm, which is determined depending on the changes in the Total Electron Content (TEC) of the ionosphere. The effects of ionospheric storms, which are strong at high latitudes and weaker at mid latitudes, are seen at all latitudes. In this study, the changes in the ionosphere caused by CME origin geomagnetic storms at different G1, G2, G3 and G4 levels that occurred on 04.11.2021, 31.03.2022, 3.10.2022, 23.03.2023 within the scope of the 25th solar cycle were investigated. TEC changes before the storm, during the storm and after the storm were examined through the station data of DB049, RO041, RL042 and PQ052 real-time Giro Lowell ionosonde located in the mid-latitude region, these obtained data were analyzed with the designed GIRO Analysis v1.03 program and revealed that they formed in the ionosphere. By determining the ionospheric anomaly types and levels, the ionospheric storm types and their effects that occur depending on the geomagnetic storm intensity and geographical location are discussed in detail. *This study was produced from the Graduate Project ID 5624, FYL-2023-5624. Keywords: Solar wind, Geomagnetic Storm, Ionospheric Storm, Space Weather