NDLI: On the Influence of Stroke Current Propagation Velocity on Lightning Horizontal Electric Fields

Content Provider	IEEE Xplore Digital Library
Author	Romero, F. Piantini, A. Cooray, V.
Copyright Year	1964
Abstract	This paper discusses the influence of stroke current propagation velocity on the characteristics of lightning horizontal electric fields, considering different types of soil and distances to the stroke location. The MTLE model is adopted for the determination of the current distribution along the return stroke channel, whereas the effect of the finite-ground conductivity is taken into account by using the modified Cooray-Rubinstein approximation. This paper also discusses the effect of the propagation velocity on each of the horizontal electric field components. The results show that the horizontal electric field is strongly influenced by the stroke current propagation velocity even for the case of good conductive ground and observation points relatively close to the stroke location. Regardless of the ground conductivity, the peak value of the static component decreases and the negative peak of the radiation component increases with the propagation velocity. Therefore, for short distances to the lightning channel, the absolute peak value of the horizontal electric field tends to decrease as the velocity increases, while for distances of few kilometers or larger its behavior is just the opposite, i.e., the amplitude increases with the propagation velocity.
Sponsorship	IEEE Electromagnetic Compatibility Society
Starting Page	940
Ending Page	948
Page Count	9
File Size	990746
File Format	PDF
ISSN	00189375
Volume Number	56
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Erbium Lightning Conductivity Soil Approximation methods Electromagnetics Mathematical model time-domain analysis Electromagnetic fields electromagnetic transient analysis electromagnetic transient propagation lightning
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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