Results 11 to 20 of about 1,732,841 (212)
The Scientific World Journal, 2021 We have analyzed the breakdown pulse train with or without the main event in this paper. Among the selected 81 flashes, 36 flashes are starting positively, and 45 are starting negatively.
Pitri Bhakta Adhikari +1 more
doaj +2 more sources
TecnoLógicas, 2022 Lightning-generated electric field measurement is used to characterize cloud-to-ground (CG) flashes. Prior to the first return stroke (FRS), these signals sometimes exhibit a pulse train, known as preliminary breakdown pulses (PBP), whose study provides ...
Camilo A. Granados +2 more
doaj +2 more sources
Temporal and Spatial Characteristics of Preliminary Breakdown Pulses in Intracloud Lightning Flashes [PDF]
Journal of Geophysical Research D: Atmospheres, 2019 AbstractWe have studied the temporal and spatial characteristics of preliminary breakdown (PB) pulses in 32 normal intracloud flashes recorded by a fast antenna lightning mapping array system called Fast Antenna Lightning Mapping Array. It was found that PB processes started with a stage of preliminary isolated pulses (PIPs) and followed by classic PB ...
Daohong Wang, Shi Dong Dong, Ting Wu
exaly +2 more sources
Locating Preliminary Breakdown Pulses in Positive Cloud‐to‐Ground Lightning [PDF]
Journal of Geophysical Research D: Atmospheres, 2018 AbstractThis paper provides the first concrete evidence that preliminary breakdown (PB) pulses of either polarity in positive cloud‐to‐ground (+CG) lightning are produced by negative leaders. Three‐dimensional location results of PB pulses in 46 +CG flashes are analyzed.
Daohong Wang, Ting Wu
exaly +2 more sources
Geophysical Research Letters, 2017 AbstractPreliminary breakdown pulses (PBPs) occur in the initial phase of lightning. A realistic model for their description is employed to investigate relation between PBP peak currents and PBP electric field amplitudes and their relation to the return stroke (RS) peak currents.
Thomas Farges +2 more
exaly +4 more sources
Pulse trains that are characteristic of preliminary breakdown in cloud‐to‐ground lightning but are not followed by return stroke pulses [PDF]
Journal of Geophysical Research, 2008 In this study, we identify and examine electric field pulse trains that are characteristic of preliminary breakdown in negative cloud‐to‐ground discharges but are not followed by return stroke waveforms. We assume that such trains are manifestations of the initiation of downward negative stepped leaders that fail to propagate all the way to the ground ...
Vladimir Rakov, Amitabh Nag
exaly +2 more sources
Comparing Upward Negative Stepped Leader and Preliminary Breakdown Pulses [PDF]
The study explores the characteristics of upward negative stepped leader pulses recorded at the Säntis Tower in Switzerland. Analysis of simultaneous channel-base current and 14.7-km vertical electric field data revealed two distinct types of pulses associated with upward negative stepped leaders [2].Category A pulses were characterized by ...
Chaumont Behrs, Toma +4 more
openaire +2 more sources
Subionospheric propagation and peak currents of preliminary breakdown pulses before negative cloud‐to‐ground lightning discharges [PDF]
Geophysical Research Letters, 2016 AbstractWe analyze broadband electromagnetic measurements of pulse sequences occurring prior to first return strokes of negative cloud‐to‐ground lightning flashes. Signals generated by lightning discharges were recorded close to the thunderstorm by a magnetic field receiver and traveled up to 600 km to three distant electric field receivers.
Thomas Farges +2 more
exaly +3 more sources
Impulse-driven surface breakdown data : a Weibull statistical analysis [PDF]
, 2012 Surface breakdown of oil-immersed solids chosen to insulate high-voltage, pulsed-power systems is a problem that can lead to catastrophic failure. Statistical analysis of the breakdown voltages, or times, associated with such liquid-solid interfaces can ...
Given, M +7 more
core +4 more sources