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Propagation effects on radiation field pulses generated by cloud lightning flashes
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Division for Electricity and Lightning Research.
2007 (English)In: Journal of Atmospheric and Solar-Terrestrial Physics, ISSN 1364-6826, E-ISSN 1879-1824, Vol. 69, no 12, 1397-1406 p.Article in journal (Refereed) Published
Abstract [en]

As the electromagnetic fields propagate over finitely conducting ground, selective attenuation of the high frequencies takes place. As a result. the signatures of broad-band electromagnetic radiation fields generated by lightning flashes change as they; propagate over such ground. In addition to being a function of the electrical parameters of the ground over which the electromagnetic fields propagate, these propagation effects depend on the height of their source above ground level. This makes the propagation effects on radiation fields from cloud flashes differ from those on the radiation fields generated by return strokes in ground flashes. In this paper the propagation effects on radiation field pulses of cloud flashes are illustrated and it is shown that these effects are not as severe as those of return strokes in ground flashes.

Place, publisher, year, edition, pages
2007. Vol. 69, no 12, 1397-1406 p.
Keyword [en]
lightning, cloud flashes, propagation effects, ground effccts attenuation
National Category
Physical Sciences Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-144026DOI: 10.1016/j.jastp.2007.03.009ISI: 000249135500009OAI: oai:DiVA.org:uu-144026DiVA: diva2:392147
Available from: 2011-01-26 Created: 2011-01-26 Last updated: 2017-12-11Bibliographically approved

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Cooray, Vernon

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