@article{oai:nagoya.repo.nii.ac.jp:00019682,
 author = {金原, 淳 and KIMPARA, Atsushi},
 issue = {1-2},
 journal = {空電研究所報告},
 month = {Apr},
 note = {In the calm period of solar activity where only the solar flares of importance 1 occur, it is rather difficult to determine which flares among them are active enough to excite SEA in VLF range. The author investigated mainly in 1955 the correlation between SEA at 27, 21. and 10 kc and the outburst in solar radio waves at 3,750 Mc, and found that the stronger the outburst, the more distinctly SEA is observed, and in average the maximum intensity of 27 kc lags 6.4 minutes behind that of outburst while that of 21 kc leads 5.4 minutes, and both of them recovers to the normal value after the period of 20 minutes to more than 1 hour depending upon the intensity of outburst, and the intensity of 10 kc decreases for strong outburst and is indifferent to weak one.},
 pages = {21--31},
 title = {空電電界强度の異常増加について},
 volume = {6},
 year = {1956}
}