@article{oai:nagoya.repo.nii.ac.jp:00019750,
 author = {佐尾, 和夫 and SAO, Kazuo},
 issue = {1-2},
 journal = {空電研究所報告},
 month = {Mar},
 note = {The present study was designed in order to examine the polarities of the respective first half cycles of the waveforms of atmospherics with respect to those traversed distances, because it may be suggested that the polarities of received waveforms are mainly due to polarities of waveforms at origins, and that cloud-to-ground discharges are considered to have the opposite polarities to the intracloud discharges. The total number of smooth daytime type waveforms dealt here is 167, and those distaces from origins distribute from 120km to 4,OOOkm. The results obtained are that numbers of respective polarities are approximately equal within 1,OOOkm, whereas the rate of negative polarity of received waveforms decreases almost linearly with increasing distance, and finally the polarities of received waveforms at great distances become perfectly positive. From the above results it becomes evident that the rate of recetion of cloud-to-ground discharges increases with distance, because the waveforms with positive polarities consist of mainly the cloud-to-ground discharges, while those with negative polarities are originated completely from intracloud discharges. Now, the rate of reception of negative polarities increases abruptly over the distance of about 3,OOOkm. This change of polarity is considered as the phase-shift due to the long distance propagation. Next, the echo type waveforms at night are also considered. The total number of night-time waveforms is 204, and in this case the mean distance from respective origins is assumed to be about 1,000km, because the waveforms without sferics fixes are also dealt as well as those with sferics fixes. And the study was made to examine the polarities of the respective first peaks of the echo type waveforms. The statistical data yielded the following results that both the peaked regular peak type and the rounded regular peak type waveforms are originated from the intracloud discharges, while cloud-to-ground discharges mainly originate the rounded regular peak type waveforms.},
 pages = {1--3},
 title = {距離による受信空電波形の極性の変化},
 volume = {12},
 year = {1962}
}