@article{oai:nagoya.repo.nii.ac.jp:00019789,
 author = {KIMPARA, Atsushi},
 journal = {Proceedings of the Research Institute of Atmospherics, Nagoya University},
 month = {Mar},
 note = {Since last general assembly extensive studies on characteristics of atmospherics radiated from lightning discharges have been made experimentally and theoretically all over the world and the remarkable progress has been attained, e. g. their frequency spectra have been obtained for almost all frequency ranges from ELF to UHF for every stage of ground and cloud discharges. Propagation characteristics of VLF waves and atmospherics have been made clear for ELF and VLF ranges, e. g. the attenuation was found almost the same for frequency range 4-10 kc and about 7 to 9 db/1,000 km at 6 kc and decreases to about 1 to 3 db/1,000 km on frequencies higher than 10 kc for atmospherics and these values are fairly well coincident with those obtained for radio waves. The intensity and phase characteristics of VLF waves and atmospherics have been investigated at normal and abnormal propagation conditions such as solar flares, geomagnetic storms, nuclear explosions, etc.},
 pages = {13--18},
 title = {LIGHTNING FLASHES AND ATMOSPHERICS},
 volume = {11},
 year = {1964}
}