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The impacts of HF and VHF radiation towards preliminary breakdown events in lightning flashes

Even though the mechanisms pertinent to the generation of radiation in frequency range above 3 MHz (HF and VHF radiation) are not well understood, it is thought that this radiation is caused by the electrical breakdown of virgin air rather than by the high current pulses propagating in pre-existin...

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Main Authors: Ismail, Mohd Muzafar, Zakaria, Zahriladha, Abd Razak, Jeefferie, Junid, Ramli
Format: Article
Language:English
Published: Penerbit UTeM 2019
Online Access:http://eprints.utem.edu.my/id/eprint/28146/2/3864
http://eprints.utem.edu.my/id/eprint/28146/
https://jamt.utem.edu.my/jamt/article/view/5710
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spelling my.utem.eprints.281462025-01-06T11:02:15Z http://eprints.utem.edu.my/id/eprint/28146/ The impacts of HF and VHF radiation towards preliminary breakdown events in lightning flashes Ismail, Mohd Muzafar Zakaria, Zahriladha Abd Razak, Jeefferie Junid, Ramli Even though the mechanisms pertinent to the generation of radiation in frequency range above 3 MHz (HF and VHF radiation) are not well understood, it is thought that this radiation is caused by the electrical breakdown of virgin air rather than by the high current pulses propagating in pre-existing channels. The data presented in this paper also show that more HF radiation (3 MHz) is generated during preliminary breakdown processes taking place inside clouds (probably associated with breakdown of virgin air) than during the subsequent return strokes that propagate along conducting channels. Moreover, we also observe that VHF radiation (30 MHz) only from Preliminary Breakdown (PB) events. Penerbit UTeM 2019-09 Article PeerReviewed text en http://eprints.utem.edu.my/id/eprint/28146/2/3864 Ismail, Mohd Muzafar and Zakaria, Zahriladha and Abd Razak, Jeefferie and Junid, Ramli (2019) The impacts of HF and VHF radiation towards preliminary breakdown events in lightning flashes. Journal of Advanced Manufacturing Technology (JAMT), 13 (2(1)). pp. 119-129. ISSN 1985-3157 https://jamt.utem.edu.my/jamt/article/view/5710
institution Universiti Teknikal Malaysia Melaka
building UTEM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknikal Malaysia Melaka
content_source UTEM Institutional Repository
url_provider http://eprints.utem.edu.my/
language English
description Even though the mechanisms pertinent to the generation of radiation in frequency range above 3 MHz (HF and VHF radiation) are not well understood, it is thought that this radiation is caused by the electrical breakdown of virgin air rather than by the high current pulses propagating in pre-existing channels. The data presented in this paper also show that more HF radiation (3 MHz) is generated during preliminary breakdown processes taking place inside clouds (probably associated with breakdown of virgin air) than during the subsequent return strokes that propagate along conducting channels. Moreover, we also observe that VHF radiation (30 MHz) only from Preliminary Breakdown (PB) events.
format Article
author Ismail, Mohd Muzafar
Zakaria, Zahriladha
Abd Razak, Jeefferie
Junid, Ramli
spellingShingle Ismail, Mohd Muzafar
Zakaria, Zahriladha
Abd Razak, Jeefferie
Junid, Ramli
The impacts of HF and VHF radiation towards preliminary breakdown events in lightning flashes
author_facet Ismail, Mohd Muzafar
Zakaria, Zahriladha
Abd Razak, Jeefferie
Junid, Ramli
author_sort Ismail, Mohd Muzafar
title The impacts of HF and VHF radiation towards preliminary breakdown events in lightning flashes
title_short The impacts of HF and VHF radiation towards preliminary breakdown events in lightning flashes
title_full The impacts of HF and VHF radiation towards preliminary breakdown events in lightning flashes
title_fullStr The impacts of HF and VHF radiation towards preliminary breakdown events in lightning flashes
title_full_unstemmed The impacts of HF and VHF radiation towards preliminary breakdown events in lightning flashes
title_sort impacts of hf and vhf radiation towards preliminary breakdown events in lightning flashes
publisher Penerbit UTeM
publishDate 2019
url http://eprints.utem.edu.my/id/eprint/28146/2/3864
http://eprints.utem.edu.my/id/eprint/28146/
https://jamt.utem.edu.my/jamt/article/view/5710
_version_ 1821007585473462272
score 13.23648

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