Akademik Veri Yönetim Sistemi
Turkish Physical Society 39th International Physics Congress, Muğla, Türkiye, 31 Ağustos - 04 Eylül 2023, ss.180
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