Results 1 to 10 of about 4,070 (175)

Time domain simulations of preliminary breakdown pulses in natural lightning [PDF]

Journal of Geophysical Research D: Atmospheres, 2015
AbstractLightning discharge is a complicated process with relevant physical scales spanning many orders of magnitude. In an effort to understand the electrodynamics of lightning and connect physical properties of the channel to observed behavior, we construct a simulation of charge and current flow on a narrow conducting channel embedded in three ...
Carlson BE, Liang C, Bitzer P, Christian H.   +3 more
exaly   +7 more sources

Characteristics of Preliminary Breakdown Pulses in Positive Ground Flashes during Summer Thunderstorms in Sweden [PDF]

Atmosphere, 2016
This paper presents the characteristics of the preliminary breakdown pulses (PBP) in 51 positive ground flashes recorded during 2014 summer thunderstorms in Sweden.
Dalina Johari, Vernon Cooray, Mahbubur Rahman, Pasan Hettiarachchi, Mohd Muzafar Ismail   +4 more
doaj   +5 more sources

The Characterization of Electric Field Pulses Observed in the Preliminary Breakdown Processes of Normal and Inverted Intracloud Flashes

Remote Sensing
We have studied the parameters of preliminary breakdown (PB) pulses in 395 normal and 319 inverted intracloud (IC) flashes observed in Gifu, Japan, and Ningxia, China, respectively, by using a low-frequency mapping system called fast antenna lightning ...
Dongdong Shi, Jinlai Zhang, Panliang Gao, Dong Zheng, Qi Qi, Jie Shao, Shiqi Kan, Daohong Wang, Ting Wu   +8 more
doaj   +4 more sources

Lightning initiation: Strong pulses of VHF radiation accompany preliminary breakdown [PDF]

Scientific Reports, 2018
We analyze lightning initiation process using magnetic field waveforms of preliminary breakdown (PB) pulses observed at time scales of a few tens of microseconds by a broad-band receiver.
Ivana Kolmašová, Ondřej Santolík, Eric Defer, William Rison, Sylvain Coquillat, Stéphane Pedeboy, Radek Lán, Luděk Uhlíř, Dominique Lambert, Jean-Pierre Pinty, Serge Prieur, Véronique Pont   +11 more
doaj   +5 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

Characterization of Preliminary Breakdown Pulse Trains in Negative Cloud-To-Ground Flashes Recorded during A Rainy Season in The Bogota Savannah, Colombia

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, Herbert E. Rojas, Francisco J. Román   +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

A model of preliminary breakdown pulse peak currents and their relation to the observed electric field pulses

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, Ivana Kolmasova, Ondřej Santolik   +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

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, Steven Cummer, Ivana Kolmasova   +2 more
exaly   +3 more sources