Electron Diffusion by Magnetosonic Waves in the Earth’s Radiation Belts

We conduct a global survey of magnetosonic waves and compute the associated bounce drift averaged diffusion coefficients, taking into account co-located measurements fpe/fce, to assess role in radiation belt dynamics. The average wave intensities increase with increasing geomagnetic activity decreasing relative frequency majority power range fcp < f 0.3fLHR during active conditions. In region 4.0 ≤ L* 5.0, energy rates due never exceed those whistler mode chorus, suggesting that chorus is dominant for electron energisation relativistic energies this region. Further in, 2.0 3.5, pitch angle can plasmaspheric hiss very low (VLF) transmitters over energy-dependent ranges intermediate angles. lifetimes by solving 1D equation including effects hiss, VLF waves. find have significant effect on loss timescales slot reducing times from 5.6 1.5 days 500 keV electrons at = 2.5 140.4 35.7 1 MeV 2.0.