Unipolar and bipolar pulses emitted during the development of lightning flashes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10319623" target="_blank" >RIV/00216208:11320/15:10319623 - isvavai.cz</a>

Alternative codes found

RIV/68378289:_____/15:00445915

Result on the web

<a href="http://dx.doi.org/10.1002/2015GL064777" target="_blank" >http://dx.doi.org/10.1002/2015GL064777</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/2015GL064777" target="_blank" >10.1002/2015GL064777</a>

Result language

angličtina

Original language name

Unipolar and bipolar pulses emitted during the development of lightning flashes

Original language description

Both unipolar and bipolar magnetic or electric field pulses have been observed during preparatory stages of a lightning flash. We introduce a new simple analytical model to describe both kinds of pulses. We show how the polarity overshoot depends on theparameters of the model, including the propagation velocity of the current pulse, the step length, and the injected current waveshape. We observe that the expression for the radiation part of the magnetic field can be decomposed into two time-shifted terms with opposite polarities. The time shift of the two terms is determined by the overall propagation time of the current pulse. The model well corresponds not only to observations of the bipolar preliminary breakdown pulses at time scales of tens of microseconds but also to both unipolar and bipolar dart-stepped leader pulses at submicrosecond time scales.

Czech name

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Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BL - Plasma physics and discharge through gases

OECD FORD branch

—

Project

<a href="/en/project/GA14-31899S" target="_blank" >GA14-31899S: Satellite, balloon and ground-based measurements of electromagnetic manifestations of thunderstorms</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2015

Confidentiality

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

Name of the periodical

Geophysical Research Letters

ISSN

0094-8276

e-ISSN

—

Volume of the periodical

42

Issue of the periodical within the volume

17

Country of publishing house

US - UNITED STATES

Number of pages

8

Pages from-to

7206-7213

UT code for WoS article

000363411200043

EID of the result in the Scopus database

2-s2.0-84943361810