The features of the partial reflection signals, radionoises and electron density variations in the middle latitude D-region of the ionosphere during the magnetic storms in 2004–2006

The changes of the partial reflection signals, radio-noises at 2.2-2.4 MHz and the electron density variations in the middle latitude D-region before, during and after five magnetic storms in 2004-2006 are investigated by the partial reflection technique. The quasi-periodic (with periods of T ges 30-60 minutes) more than 50-100% increase of electron density during tens of minutes was found. The estimations of the ionization rate of change were made. On the basis of the experimental data over the electron and proton precipitation periods, corresponding fluxes were estimated being p ~10⁷ - 10⁸m^-2sec^-1.