Abstract
We present the results of statistical R/S analysis of natural electromagnetic noise in the frequency range of Schumann resonance. The Hurst exponent was derived for the records of two horizontal magnetic antennas performed at the Negev desert, Israel. Analysis shows that ELF radio noise is an anti‐persistent random process. Temporal variations of the R/S ratio contain diurnal and slower variations probably indicating changes in the global lightning rate.
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