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Review of Measurements of the RF Spectrum of Radiation From LightningA review is presented of the measurements reported in the literature of the spectrum of electromagnetic radiation from lightning in the frequency range from 1 kHz to 1 GHz. Measurements have been made either by monitoring the power received at individual frequencies using a narrow bandwidth recording device tuned to the frequencies under investigation or by recording the transient (time dependent) radiation with a wide bandwidth device and then Fourier transforming the waveform to obtain a spectrum. Measurements of the first type were made extensively in the 1950’s and 1960’s and several composite spectra have been deduced by normalizing the data of different investigators to common units of bandwidth and distance. The composite spectra tend to peak near 5 kHz and then decrease roughly as (frequency).’ upto nearly 100 MHz where scatter in the data make the behaviour uncertain. Measurements of the second type have been reported for return strokes, the stepped leader and for some intracloud processes. The spectrum of first return strokes obtained in this manner is very similar to the composite spectra obtained from the narrowband measurements.
Document ID
Acquisition Source
Goddard Space Flight Center
Document Type
Technical Memorandum (TM)
David M Le Vine ORCID
(Goddard Space Flight Center Greenbelt, United States)
Date Acquired
September 5, 2013
Publication Date
March 1, 1986
Publication Information
Publisher: National Aeronautics and Space Administration
Subject Category
Meteorology And Climatology
Report/Patent Number
NAS 1.15:87788
Accession Number
Distribution Limits
Work of the US Gov. Public Use Permitted.
Lightning Spectrum
Lightning Noise
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