Publication: Environmental analysis of quasi-static electric field changes of tropical lightning flashes
Date
2019
Authors
Sabri M.H.M.
Ahmad M.R.
Esa M.R.M.
Periannan D.
York S.B.
Mohammad S.A.
Abdul-Malek Z.
Lu G.
Zhang H.
Yusop N.
Journal Title
Journal ISSN
Volume Title
Publisher
Cevkor Vakfi
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. � Foundation Environmental Protection & Research-FEPR.
Description
cloud to ground lightning; comparative study; electric field; electron; environmental assessment; environmental conditions; environmental factor; lightning; storm; thunderstorm; tropical environment; wave dispersion; Malaysia; Strait of Malacca