Universiti Teknologi Malaysia Institutional Repository

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

Mohamad Sabri, Muhammad Haziq and Ahmad, Mohd. Riduan and Mohd. Esa, Mona Riza and Periannan, Dinesh and Seah, Boon York and Mohammad, Sulaiman Ali and Abdul-Malek, Zulkurnain and Lu, Gaopeng and Zhang, Hongbo and Yusop, Norbayah 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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Official URL: http://www.ekolojidergisi.com/article/environmenta...


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:environmental factors, intra-cloud flash, lightning initiation
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:88892
Deposited By: Yanti Mohd Shah
Deposited On:29 Dec 2020 12:42
Last Modified:29 Dec 2020 12:42

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