Ionospheric TEC Variation and Gravity Waves Signatures During the Solar Eclipse on 21 June 2020 Over Southern China

Abstract

Solar eclipses provide a unique opportunity to study ionospheric disturbances. Several factors can cause ionospheric disturbances, such as geomagnetic variation (

Intermediate Descending Layers Emerged Simultaneously in Five Different Locations During the Solar Eclipse on 21 June 2020

“…The 70‐min period gravity waves induced by the same solar eclipse at mid‐ and low‐latitudes of China also have been reported by Gu et al. (2023). Therefore, it is very likely that the oscillations in ionospheric intermediate layer and F2‐layer were induced by the eclipse associated gravity waves.…”

“…The solar eclipse on 21 June 2020 has also induced the atmospheric gravity waves at mid‐ and low‐latitudes of China and are reported by Gu et al. (2023) and Wang et al. (2023).…”

“…The solar eclipse induces gravity waves have been observed and reported in many eclipse events (Chen et al, 2011b, 2021Lin et al, 2018;Liu et al, 1998;Nayak and Yiğit, 2018). The solar eclipse on 21 June 2020 has also induced the atmospheric gravity waves at mid-and low-latitudes of China and are reported by Gu et al (2023) and Wang et al (2023). The larger descending speed of the IDLs (>10 km/hr) reveals the influence of the gravity waves in their dynamics (Santos et al, 2021).…”