Propagation Effects Due to Finitely Conducting Ground on Lightning-Generated Magnetic Fields Evaluated Using Sommerfeld's Integrals

被引：57

作者：

Cooray, Vernon ^{[1
]}

机构：

[1] Uppsala Univ, Div Elect, S-75121 Uppsala, Sweden

来源：

IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY | 2009年 / 51卷 / 03期

关键词：

Attenuation; finite ground conductivity; lightning; magnetic field; propagation effects; radiation field; return stroke; RETURN STROKE MODELS; ELECTROMAGNETIC-FIELDS; RADIATION-FIELDS; ELECTRIC-FIELDS; RISE TIMES; SURFACE; WAVES; EARTH;

D O I：

10.1109/TEMC.2009.2019759

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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.

引用

页码：526 / 531

页数：6

共 28 条

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[2]

Baba Y., 2008, 29 INT C LIGHTN PROT

[3]

Bannister P.R., 1984, Extension of finitely conducting earth-image-theory results to any range"

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