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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F17%3A00467892" target="_blank" >RIV/68378289:_____/17:00467892 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/17:10371299

Výsledek na webu

<a href="http://dx.doi.org/10.1002/2016GL071483" target="_blank" >http://dx.doi.org/10.1002/2016GL071483</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/2016GL071483" target="_blank" >10.1002/2016GL071483</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

Preliminary 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. We demonstrate that the PBP peak currents can reach 200 kA, and can be comparable or higher than the corresponding RS peak currents. For a typical PBP electric field waveform PBP peak currents are approximately proportional to the electric field amplitudes. We show that the PBP bipolar overshoot depends primarily on the characteristic time of the line conductivity increase. The magnitude of the charge centers is demonstrated to be very large in order to model the observed PBPs with amplitudes up to 32 V/m at 100 km. Such energetic current pulses might be capable to produce elves or terrestrial gamma-ray flashes.

Název v anglickém jazyce

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

Popis výsledku anglicky

Preliminary 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. We demonstrate that the PBP peak currents can reach 200 kA, and can be comparable or higher than the corresponding RS peak currents. For a typical PBP electric field waveform PBP peak currents are approximately proportional to the electric field amplitudes. We show that the PBP bipolar overshoot depends primarily on the characteristic time of the line conductivity increase. The magnitude of the charge centers is demonstrated to be very large in order to model the observed PBPs with amplitudes up to 32 V/m at 100 km. Such energetic current pulses might be capable to produce elves or terrestrial gamma-ray flashes.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/GA14-31899S" target="_blank" >GA14-31899S: Družicová, balonová a pozemní meření elektromagnetických projevů bouřkové aktivity</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Geophysical Research Letters

ISSN

0094-8276

e-ISSN

—

Svazek periodika

44

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

596-603

Kód UT WoS článku

000393954900068

EID výsledku v databázi Scopus

2-s2.0-85010637654