The August 2018 Geomagnetic Storm Observed by the High-Energy Particle Detector on Board the CSES-01 Satellite

On 25 August 2018, a G3-class geomagnetic storm reached the Earth’s magnetosphere, causing transient rearrangement of charged particle environment around planet, which was detected by High-Energy Particle Detector (HEPD) on board China Seismo-Electromagnetic Satellite (CSES-01). We found that count rates electrons in MeV range were characterized depletion during storm’s main phase and clear enhancement recovery caused large substorm activity, with key role played auroral processes mapped into outer belt. A post-storm rate increase localized at L-shells immediately above ∼3 mostly driven non-adiabatic local acceleration possible resonant interaction low-frequency magnetospheric waves.