The features of partial reflection signals, radionoises and electron density variations in the regional middle latitude D-region during five solar eclipses

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 solar eclipses 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 precipitation periods, stimulated by solar eclipses, corresponding fluxes were estimated, being p ~(10⁷ ...10⁸) m^-2sec^-1.