Environmental analysis of quasi-static electric field changes of tropical lightning flashes

Mohamad Sabri, Muhammad Haziq and Ahmad, Mohd Riduan and Periannan, Dinesh and Seah, Boon York and Yusop, Norbayah and Mohd Esa, Mona Riza and Mohammad, Sulaiman Ali and Abdul-Malek, Zulkurnain and Lu, Gaopeng and Zhang, Hongbo and Cooray, Vernon and Al-Kahtani, Ammar Ahmed and Ab Kadir, Mohamad Zainal Abidin and Mohd Hatta, Norhasliza and Abdullah, Noradlina and Yahaya, Mohd Pauzi (2019) Environmental analysis of quasi-static electric field changes of tropical lightning flashes. EKOLOJI, 28 (107). pp. 373-378. ISSN 1300-1361

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Abstract

The environmental conditions leading to the bouncing-wave discharge and the subsequent electron beam remain to be investigated in more detailed future studies. The analysis of quasi-static initial electric field changes (IECs) were found at the beginning of all 24 lightning flashes detected within reversal distance (22 Negative Cloud-to-Ground (–CG) and 2 normal Intra-Cloud (IC) flashes) in a tropical storm on June 15th, 2017 close to our station in Malacca, Malaysia (2.314077° N, 102.318282° E). The IECs durations averaged 4.28 ms for –CG flashes (range 1.48 to 9.45 ms) and averaged 11.30 ms for normal ICs flashes (range 7.24 to 15.35 ms). In comparison to Florida storms, the duration of IECs for –CG and IC flashes were 0.18 ms (range 0.08 to 0.33 ms) and 1.53 ms (range 0.18 to 5.70 ms), respectively. Moreover, the magnitudes of E-change for tropical thunderstorm were 0.13 V/m (range 0.03 to 0.44 V/m) for –CG flashes and-0.20 V/m (range-0.13 to-0.27 V/m) for IC flashes. The E-change magnitudes of tropical flashes are significantly larger than Florida flashes.

Item Type: Article
Uncontrolled Keywords: Breakdown pulse, Cloud to ground flash, Intra-cloud flash, Lightning initiation, Quasi-static, Electric field, Environmental factors
Divisions: Faculty of Electronics and Computer Engineering
Depositing User: Norfaradilla Idayu Ab. Ghafar
Date Deposited: 04 Aug 2020 15:59
Last Modified: 30 May 2023 11:29
URI: http://eprints.utem.edu.my/id/eprint/24167
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