Effect of Frequency-Dependent Soil on the Propagation of Electromagnetic Fields Radiated by Subsequent Lightning Strike to Tall Objects
Effect of Frequency-Dependent Soil on the Propagation of Electromagnetic Fields Radiated by Subsequent Lightning Strike to Tall Objects
复制标题
频率相关土壤对后续雷击向高物体辐射的电磁场传播的影响
DOI：
10.1109/temc.2014.2361926
复制
发表时间：
2015
影响因子：
2.1
通讯作者：
Hou Wenhao
中科院分区：
文献类型：
--
作者：
Zhang Qilin;Ji Tongtong;Hou Wenhao
本文研究了频率相关土壤(FDS)对雷击高度为50~300m的高空物体所产生的远垂直电场的传播效应，发现FDS的场传播衰减明显小于假设参数不变的情况(100 Hz的低频电导率，LFC)，并且随着LFC的减小，相应的场衰减增大。当LFC等于或大于0.01 S/m时，FDS的影响可以忽略。然而，当LFC为0.0001 S/m时，对于300m高的物体，FDS的场峰值可能达到LFC地球的2.5%。
In this paper we have studied the propagation effect of frequency-dependent soil (FDS) on the far vertical electric fields radiated by subsequent lightning strike to tall objects with heights from 50 to 300 m. It is found that the field propagation attenuation along FDS is obviously less than that case where the parameters are assumed to be constant (low-frequency conductivity at 100 Hz, LFC) and with the decrease of LFC, the corresponding field attenuation increases. When LFC is equal to or larger than 0.01 S/m, the effect of FDS can be ignored. However, when LFC is 0.0001 S/m, the field peak for FDS may reach as much as 2.5 times of that earth with LFC for strike to a 300-m-tall object.