The Day‐Night Difference and Geomagnetic Activity Variation of Energetic Electron Fluxes in Region of South Atlantic Anomaly

Abstract

Utilizing the DEMETER observations at 670 km, we examined the day-night difference of energetic electrons (100-800 keV) in the South Atlantic Anomaly (SAA) region and their dependence on geomagnetic activities in different seasons. Under geomagnetically quiet conditions, the fluxes of higher-energy electrons (>200 keV) in the dusk and midnight (MLT~19-24 hr) are usually larger than those in the morning (MLT~8-12 hr) in the core region of the SAA (−50 ≤ λ ≤ − 20deg) during the northern and southern summers (

Complementary and Catalytic Roles of Man‐Made VLF Waves and Natural Plasma Waves in the Loss of Radiation Belt Electrons

“…However, the life times of natural hiss and LGWs are shorter than 20 days in most cases (see Figure 1 in the papers of Li, Liu, et al., 2017 and Green et al., 2020), and thus does not support the longer time diffusions. Moreover, the longer time diffusions (e.g., more than one year) are ignorable relative to rapid change sources such as the frequent electron injections by intense storms (Claudepierre et al., 2019; L. Y. Li et al., 2020).…”