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Propagation effects due to finitely conducting ground on lightning-generated magnetic fields evaluated using sommerfeld's integrals
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
2009 (English)In: IEEE transactions on electromagnetic compatibility (Print), ISSN 0018-9375, E-ISSN 1558-187X, Vol. 51, no 3, 526-531 p.Article in journal (Refereed) Published
Abstract [en]

The effects of finitely conducting ground on the signature of lightning-generated magnetic fields at ground level were evaluated by numerical solution of Sommerfeld's integrals. Results are presented for distances between 10 m to 1 km from the lightning channel and for ground conductivities in the range of 0.01 and 0.0001 S/m. The results obtained from the exact theory are compared with the predictions of two frequently used analytical approximations to Sommerfeld's equations. Based on that comparison, the limits of validity of these approximate theories are obtained.

Place, publisher, year, edition, pages
USA: IEEE , 2009. Vol. 51, no 3, 526-531 p.
Keyword [en]
Attenuation, finite ground conductivity, lightning, magnetic field, propagation effects, radiation field, return stroke
National Category
Engineering and Technology
URN: urn:nbn:se:uu:diva-113138DOI: 10.1109/TEMC.2009.2019759ISI: 000269154300012ISBN: 0018-9375OAI: oai:DiVA.org:uu-113138DiVA: diva2:289915

10828839 propagation effects finite-ground conductivity lightning-generated magnetic fields Sommerfeld integrals lightning channel ground conductivities distance 10 m to 1000 m

Available from: 2010-01-25 Created: 2010-01-25 Last updated: 2016-04-14Bibliographically approved

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