Characterization of measured lightning electric fields observed in Malaysia

Arshad, S. N. M.; Kadir, Mohd Zainal Abidin Ab; Izadi, Mahdi; Hamzah, M. N.; Gomes, Chandima; Jasni, Jasronita

doi:10.1109/iclp.2014.6973281

Cited by 16 publications

(7 citation statements)

References 12 publications

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“…The average slow front duration in this study is around 4.75 µs. The result here is similar to those reported in other studies in Malaysia, which capture the average slow front duration at around 4.95 µs [18], and 4.50 µs [20].…”

Section: Ice4ct2021supporting

confidence: 91%

“…This indicate that the PBPs will preceded the first return stroke by around 9.44 ms in average. The time obtain in this paper is very close when comparing the result with CL Wooi [18], which report the average PBPs to return stroke is around 10.5 ms. This time range is a good reference as a parameter for the engineer to design the relay to protect the electronic equipment.…”

Section: Ice4ct2021supporting

confidence: 76%

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Characteristics of Fast Electric Field Generated by Negative Lightning in Northern Peninsular Malaysia.

Hwang

Wooi

Ahmad

et al. 2022

J. Phys.: Conf. Ser.

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The development and advancement of lightning locating system (LLS) reaches until 2021 and the characteristics of lightning can be studied by observing the electric field produced by lightning. There are several studies proven that preliminary breakdown pulses (PBPs) are always preceded the return stroke, the duration of the PBPs and the time for the PBPs preceded the return stroke tend to be different depends on the types of lightning, regions, and location. This paper observed and recorded the fast electric field changes of negative cloud to ground lightning (CG). Total of ten sample data was captured on 13 May 2021 and selected to be analyzed in detail. Information such as rise time to peak, duration of preliminary breakdown pulses has been recorded. The captured result is compared with the results from other papers. The results show that the PBPs duration are very similar when compared with local results which shows an average of 2.347 ms. While the average time for PBPs to precede the first return stroke is around 9.44 ms and the rise time from 10% to 90% peak of first return stroke shows an average time of 4.86 μs

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Section: Ice4ct2021supporting

confidence: 91%

Section: Ice4ct2021supporting

confidence: 76%

Characteristics of Fast Electric Field Generated by Negative Lightning in Northern Peninsular Malaysia.

Hwang

Wooi

Ahmad

et al. 2022

J. Phys.: Conf. Ser.

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“…(2014), Arshad et al. (2014), and Hazmi et al. (2016) found AM values between 8 and 58 ms, in tropical regions.…”

Section: Resultsmentioning

confidence: 87%

“…Figure 3a shows the histogram of PB-RS intervals. Baharudin et al (2012), , Arshad et al (2014), andHazmi et al (2016) found AM values between 8 and 58 ms, in tropical regions. In most studies in tropical regions, the AM is shorter than 30 ms, this could be related to the pre-trigger used in different studies, we speculate that studies that use long pre-trigger are more likely to record longer PB-RS intervals.…”

Section: Preliminary Breakdown Pulse Train Characteristicsmentioning

confidence: 90%

Characteristics of Negative Cloud‐To‐Ground Flashes Observed in the Brazilian Amazon Region

et al. 2021

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Among the different types of lighting that occur on Earth, the cloud-to-ground (CG) lightning is the one most studied and investigated phenomenon because of its real threat to human beings, electric power systems, telecommunication systems, and electrical and electronic systems in general. The downward CG flashes consist of a single return-stroke (RS) or a first RS, followed by several subsequent strokes (SS). The CG lightning flash usually involves a preliminary breakdown (PB) process followed by a downward leader and a RS that connects to the ground during the attachment process. In negative RS, negative charge is effectively transported to the ground, and in positive RS, the opposite charge transfer occurs (Uman, 1987). The incidence of CG flashes is estimated to be 25% of all lightning occurrences on Earth (Rakov, 2016;Rakov & Uman, 2003). In the U.S, according to Medici et al. (2017), the incidence of CG flashes varies from 15% to 44%. The characteristics of CG lightning are in the field of interest for engineering applications, geophysical research, meteorology, among other fields of study.It is known that lightning parameters can vary from one storm to another (Saraiva et al., 2010;Y. Zhu, Rakov et al., 2015). Also, lightning parameters can change from one region to another region of the globe due to the regional physiography and atmospheric conditions (Kilinc & Beringer, 2007;Kuleshov, 2004;Mushtaq et al., 2018) and, mainly regarding different latitudes (Pinto et al., 1997;Thomson, 1980b). However, Thomson (1980b) suggested that those differences could be because of the different methodologies employed to measure the parameters, for instance, different sample rates of digitizers, different trigger thresholds, and different equipment in general. Recently, Cooray et al. (2020), developed a theory to explain why the peak current in negative return strokes increases as the latitude decreases. They showed that this dependence is related to the difference in the heights of the charge centers in the thunderclouds at different geographical regions. The Amazon region is located in the low latitude region, and so, high-intensity lightning flashes are expected. Those high-intensity CG flashes were observed by Almeida et al. (2012) in the eastern Amazon region.

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“…Comparative studies about the lightning discharge processes in different meteorological conditions can contribute to stablish the return strokes characteristics and provide a better understanding of the lightning phenomena [4], [10]- [12]. However, there are only a few measurements done in the tropical regions (Sri Lanka, Malaysia and Indonesia).…”

Section: Introductionmentioning

confidence: 99%

Characteristics of lightning-generated electric fields measured in the Bogotá Savanna, Colombia

Rojas

Cruz

Cortés

2017

revuin

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In this paper, important features of electric fields produced by cloud-to-ground (CG) lightning flashes in the central region of Colombia are analyzed. This study is the first conducted in the country where more than 100 CG lightning flash signatures are analyzed. The measurements were conducted at Bogotá, Colombia between August-September 2016. A total of 138 electric field waveforms obtained from 7 thunderstorms events with an average duration of 2.7 hours were included. The distance of the electric field signatures with respect to the measuring system was in the range between 40 and 249 km. The statistical analysis showed that 38% of the recorded negative CG flashes were singlestrokes, which is a high percentage in comparison with other tropical and sub-tropical regions. The maximum multiplicity during the season was 9 strokes per flash and the average duration of the multiple-stroke flashes was 165 ms. In addition, although electric field signatures present a signal-to-noise ratio (SNR) with a medium level, the preliminary breakdown pulse train was identified in 22.8% of the recorded flashes. The minimum and maximum duration of preliminary breakdown for the examined negative flashes were 800 ns and 22 ms, respectively. KEYWORDS:Cloud-to-ground lightning, Electric field, Negative return stroke, Preliminary breakdown pulses. RESUMENEn este artículo se presentan y analizan características importantes de los campos eléctricos producidos por rayos (flashes) nube-tierra (CG) en la región central de Colombia. Este estudio es el primero llevado a cabo en el país donde se analizan más de 100 registros de rayos CG. Las mediciones se realizaron en Bogotá, Colombia entre agosto y septiembre de 2016. En total, se incluyeron 138 formas de onda de campo eléctrico obtenidas a partir de 7 tormentas eléctricas con una duración media de 2,7 horas. La distancia de los registros de campo eléctrico estuvo entre 40 y 249 km con respecto al sistema de medición. El análisis estadístico mostró que el 38% de los rayos CG negativos registrados presentaron una sola descarga de retorno (return stroke), lo cual es un porcentaje alto en comparación con otras regiones tropicales y subtropicales. La multiplicidad máxima registrada durante la temporada fue de 9 strokes por flash y la duración media de los flashes con múltiples strokes fue de 165 ms. Además, aunque las formas de onda del campo eléctrico presentan una relación señal-a-ruido (SNR) con un nivel medio, se identificó el tren de impulsos asociados a las descargas preliminares en el 22,8% de los flashes registrados. La duración mínima y máxima de la descarga preliminar para los flashes negativos examinados fue de 800 ns y 22 ms, respectivamente.

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Characterization of measured lightning electric fields observed in Malaysia

Cited by 16 publications

References 12 publications

Characteristics of Fast Electric Field Generated by Negative Lightning in Northern Peninsular Malaysia.

Characteristics of Fast Electric Field Generated by Negative Lightning in Northern Peninsular Malaysia.

Characteristics of Negative Cloud‐To‐Ground Flashes Observed in the Brazilian Amazon Region

Characteristics of lightning-generated electric fields measured in the Bogotá Savanna, Colombia

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