TURKISH PHYSICAL SOCIETY 37 th INTERNATIONAL PHYSICS CONGRESS, Muğla, Türkiye, 1 - 05 Eylül 2021, ss.140-141
Positive and negative TEC (Total Electron Content) anomalies were calculated by
investigating the TEC disturbance effects on the Earth's ionosphere, a natural plasma,
caused by the 6.6-moment magnitude earthquake that occurred off the AegeanSea at
11:51:24 on October 30, 2020. By examining the effects of solar and geomagnetic activity
on ionospheric disturbance, TEC anomalies that are likely to be related to the earthquake
were determined. TEC data; obtained via three ground-based ionosondes (one selected
outside the earthquake preparation zone for comparison) and five satellite-based IGS
stations. The linear and polynomial correlations between the latitude and longitudinal
distances to the earthquake epicenter of the TEC anomalies, which were determined to be
caused by the earthquake, were obtained by various statistical operations.