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

Abstract

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