Lightning horizontal electric fields above a two-layer ground

In this paper we present a calculation method for distant horizontal electric fields radiated by lightning return strokes over a two-layer horizontally stratified ground. A simplified expression is derived for the horizontal electric field combining the two-layer ground surface impedance and the Coo...

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Bibliographic Details
Published in2010 30th International Conference on Lightning Protection (ICLP) pp. 1 - 5
Main Authors Shoory, A., Mimouni, A., Rachidi, F., Cooray, V., Rubinstein, M.
Format Conference Proceeding
LanguageEnglish
Published University of Cagliari 01.09.2010
Subjects
Atmospheric modeling
Finite difference methods
Geophysical measurements
Time-domain analysis
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Summary:In this paper we present a calculation method for distant horizontal electric fields radiated by lightning return strokes over a two-layer horizontally stratified ground. A simplified expression is derived for the horizontal electric field combining the two-layer ground surface impedance and the Cooray-Rubinstein (CR) formula. The accuracy of the proposed formula to reproduce distant horizontal electric fields over a stratified ground is tested using finite-difference time-domain (FDTD) full-wave simulations. It is shown that the proposed formula is able to reproduce satisfactorily the horizontal electric field, particularly its early-time response.
DOI:10.1109/ICLP.2010.7845920