@article{oai:nagoya.repo.nii.ac.jp:00019891,
 author = {IWATA, Akira and KANADA, Masahiro},
 journal = {Proceedings of the Research Institute of Atmospherics, Nagoya University},
 month = {Mar},
 note = {The peak intensity spectra of atmospheric source signals have been investigated in a high frequency range to see the influence of different processes involved in lightning discharge on the nature of an intensity spectrum. It has been shown that a return stroke is the strongest source of an atmospheric source signal below a few Mc/s, while it tends to be a weaker source as the frequency is increased beyond 15 Mc/s. The recoil process which is responsible for a K-change becomes predominant beyond several Mc/s. It has been found that the break-down process preceding a leader process is not predominant in the frequency range investigated.},
 pages = {1--6},
 title = {ON THE NATURE OF FREQUENCY SPECTRUM OF ATMOSPHERIC SOURCE SIGNALS},
 volume = {14},
 year = {1967}
}