Variations in the Equatorial Ionospheric F Region Current during the 2022 Tonga Volcanic Eruption

In this work, the temporal variations in ionospheric F region current (FRC) during 2022 volcanic eruption Tonga are reported for first time. The FRC increased and underwent several polarity reversals following eruption, as observed by dual Swarm satellites. By combining neutral wind observations derived from Ionospheric Connection Explorer (ICON) satellite, we attempt to reveal potential physical mechanisms responsible these variations. ICON satellites were located at almost same distance epicenter of wave, thus providing a good opportunity analyzing coordinated observations. F-layer data reflect eastward westward fluctuations that basically consistent with identified FRC. E-layer also exhibits affect equatorial ionosphere electron density anomaly. These results show atmospheric caused analyzed affected pattern distribution E-F region, further affecting spatial layer.