Spectrum of solar atmosphere disturbances emitting solar noise storms at meter wavelengths

It is shown by observations, that the spectrum of noise storms is described by hyperbolic dependence G (F) = 1/F in the range of frequencies 0.001-0.1 Hz. Such hyperbolic spectrum can be formed by sum of pulses, which duration is in limits from 10 up to 1000 sec. Hence, the widespread hypothesis of noise storm formation from short-lived bursts is not confirmed by observations. In reality, the mechanism of noise storm radiation should provide the fluctuations of intensity with duration from part of second up to 1000 sec.