@article{oai:nagoya.repo.nii.ac.jp:00019606, author = {鎌田, 哲夫 and KAMADA, Tetsuo}, issue = {2}, journal = {空電研究所報告}, month = {Mar}, note = {This paper is described the preliminary works carried out so as to propose the directive type lightning counter which can count the number of discharge caused by lightning instanteneously on the azimuth divided in four or more. From the results obtained, we recognized the facts that the discharge number per unit time seems to be closely related to a developing process of thunderstorm-cell and therefore it would be possible to forecast the thunderstorm by the period where the discharge number per unit time starts to increase sharply. Hence, we believed that directive type lightning counter would be more useful than the one having no directivity for the study of making the thunderstorm distribution chart and locating the local sources of atmospherics.}, pages = {125--131}, title = {方位分割型雷放電計数器の研究(第1報) : 予備観測と必要性について}, volume = {4}, year = {1954} }