The profiles of phase space density (PSD) showed clear deepening minimums consistent with the scattering by electromagnetic ion cyclotron (EMIC) waves . Long-term evolution shows that local minimums in PSD can persist for relatively long times.
The deepening PSD minimums were observed around L* = 4 during 17 January 2013 storm and around L* = 3.5 during 1 March 2013 storm. We showed a new method that can help identify the location, magnitude, and time of the local loss and will help quantify local loss in the future. We also provided additional clear and definitive evidence that local loss plays a major role for the dynamics of the multi-MeV electrons.
Publushed reasearch: Shprits, Y. Y., A. Kellerman, N. Aseev, A. Y. Drozdov, and I. Michaelis (2017), Multi-MeV Electron Loss in the Heart of the Radiation Belts, Geophys. Res. Lett., 44, doi:10.1002/2016GL072258