
We examine the relationship between fluctuations in Dst and fluctuations in the relativistic electron flux during magnetic storms using relativistic electron data from the CRRES and Polar satellites and the LANL geosynchronous satellites. We see evidence of negative excursions in Dst in all phases of major storms corresponding to significant reductions in radiation belt electrons. Similarly increases in Dst correspond to increases in the radiation belt electron population. We include a superposed epoch analysis of the effect of substorms on the relativistic electron population in the radiation belt.