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ON THE FINE STRUCTURE OF ATMOSPHERICS NEAR THEIR ORIGINS Part II Interpretation of pulsive waveform of leader stroke
http://hdl.handle.net/2237/21553
http://hdl.handle.net/2237/21553675073cc-bb1f-419e-87bb-0e0c30a410b6
名前 / ファイル | ライセンス | アクション |
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Vol3-2.pdf (2.8 MB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2015-04-14 | |||||
タイトル | ||||||
タイトル | ON THE FINE STRUCTURE OF ATMOSPHERICS NEAR THEIR ORIGINS Part II Interpretation of pulsive waveform of leader stroke | |||||
言語 | en | |||||
著者 |
ISIKAWA, HARUZI
× ISIKAWA, HARUZI× TAKAGI, MASUMI |
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アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
抄録 | ||||||
内容記述 | The greater part of this paper is concerned with the interpretation of pulsive waveforms emitted by cloud discharges. The fine structure of these waveforms has already been discussed in Part I. of this paper. The statistical analysis of time intervals between large amplitude pulses on the waveform of violent cloud discharge, as well as of moderate cloud discharge, has shown that the minute discharge processes, each of which emits a large pulse, occur nearly at random in the course of a cloud discharge, and that the typical waveform of cloud discharge is composed of a random series of these large pulses. These results have lead the present authors to the conclusion that the minute discharges which occur in the course of a cloud discharge process and emit their respective large pulses do not correspond to each of the step streamers composing a whole of a stepped leader of violent cloud discharge, but correspond either to the exceptionally rapid step streamers, which present themselves thoroughly by chance from time to time in a train of step stremmers forming up a complete stepped leader, or to the random streamers which have the characteristic of a dart leader with short channel length and occur in the course of a moderate cloud discharge. This is just the same conclusion as that has already been obtained in Part I. The analysis of time intervals between small amplitude pusles on the waveform of violent cloud discharge, on the other hand, has indicated that the minute discharge processes, each of which emits a small pulse, can be inferred to correspond to the streamers having the same characteristic as the stepped leader of a ground discharge. Only one difference found between the nature of minute discharge processes emitting small pulses on the waveform of violent cloud discharge, and that of step streamer processes forming α types tepped leader of a ground discharge, is that the lower limit of the time interval between minute discharge processes is smaller than that of the time interval between step streamers. Generally speaking, this must mean that the stepped leader of cloud discharge can have smaller value of time of step pause than α type stepped leader of ground discharge. It can be concluded from the present results that the cloud discharges largerly consist of β type stepped leaders, when the discharges are violent in a thunder cloud and the structure of them has the nature of a stepped leader. | |||||
言語 | en | |||||
内容記述タイプ | Abstract | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | The Research Institute of Atmospherics, Nagoya University | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | departmental bulletin paper | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
ISSN(print) | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 0077-264X | |||||
書誌情報 |
en : Proceedings of the Research Institute of Atmospherics, Nagoya University 巻 3, p. 29-42, 発行日 1956-01-30 |
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著者版フラグ | ||||||
値 | publisher | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/21553 | |||||
識別子タイプ | HDL |