Wavelet analysis of the ELF signatures of global thunderstorm activity

The signals from near and long-distance thunderstorms are considered using the method of wavelet transforms with the purpose of checking a hypothesis about the presence of the 1/f-noise component in the investigated processes. It is shown that when the thunderstorm center moves up to a reception point, the Schumann or global resonances on a spectral plane decrease, gaining a characteristic of the flicker-noise process with a power spectrum 1/f^γ with γ accepting values in limits from 1 to 1.2