@article{oai:nagoya.repo.nii.ac.jp:00019755,
 author = {竹内, 利雄 and 高木, 増美 and TAKEUTI, Tosio and TAKAGI, Masumi},
 issue = {1-2},
 journal = {空電研究所報告},
 month = {Mar},
 note = {Simultaneous observations of thunderstorms at some places in Gunma prefecture have been carried since 1960. We obtained till now some results as following. A thundercloud consists of two vertical electric dipoles which have reversal senses each other and those two dipoles are horizontally apart a few kilometers from each other. Some of cloud discharges occur within one of those dipoles. Some of other cloud discharges neutralize one of those dipoles and the other successively. A few cloud discharges occur at other portions. The P-P discharge - the cloud discharge preceding ground discharge - occurs within upper positive dipole and successive ground discharge concerns upper negative dipole. Some records show that field changes due to ground strokes decrease those inclinations when distances between observation point and struck point increase. This cause does not clear.},
 pages = {1--6},
 title = {雷放電の多点同時観測の結果について},
 volume = {13},
 year = {1963}
}