ИСТИНА

The MLT distribution of electron (0.15–300 keV) and proton (0.15–6900 keV) flux/precipitation into the atmosphere based on NOAA POES and METOP satellite data during 2001–2008 in combination with different substorm activity was described. Substorms mostly increase particle precipitation in the night sector by about factor 2–4, but can also reduce it in the day sector. During substorms the maximum low energy electron flux is shifted by 2 degrees to the equator MLT dependence can be assigned to particles entering the magnetosphere at the cusp region and magnetospheric particles in combination with energy-specific drifts The maximum flux asymmetry ratio depends on particle energy, decreasing with Kp for low energetic particles and increasing with Kp for higher energy electrons, while high energy protons show a more complex dependency.