Measurements and simulation of the M-component current and simultaneous electromagnetic fields at 60 m and 550 m
Measurements and simulation of the M-component current and simultaneous electromagnetic fields at 60 m and 550 m
复制标题
60 m 和 550 m 处 M 分量电流和同时电磁场的测量和模拟
DOI：
10.1016/j.atmosres.2010.12.011
复制
发表时间：
2011-03
影响因子：
5.5
通讯作者：
张其林
中科院分区：
文献类型：
--
作者：
张其林
同时测量的M分量电流（浪涌叠加在雷电持续电流）和相应的电磁场在60米和550米的闪电通道进行了分析和模拟的两个波模型。测量结果表明，沟道底部的M分量电流呈V型，前沿为78μs，后沿为194μs，而60 m和550 m处的电场脉冲后沿快于前沿。M分量电流的峰值滞后于电场峰值几十微秒，当距离增加到550 m时，时移的不一致性也增加。然而，M分量电流的波形类似于磁场脉冲的波形。60 m和550 m处的M分量电场分别为1.16kV/m和0.17kV/m，并呈现对数距离依赖关系，这意味着M分量电荷密度随高度增加而增加。此外，一个两波模型被用来检查的灵敏度预测的电场和磁场的速度和电流反射系数的变化的M-组件。模拟结果表明，电场和磁场对器件的影响是不同的。M分量速度基本上控制电场，但对磁场的影响很小。反射系数越大，磁场越大，电场越小。
Simultaneous measurements of the M-component current (surges superimposed on lightning continuing currents) and the corresponding electromagnetic fields at 60m and 550m from the lightning channel are analyzed and simulated with a two-wave model. The measured results reveal that the M-component current at the bottom of the channel exhibits a V-shape character with a leading edge of 78μs and a trailing edge of 194μs, while the electric field pulses at 60m and 550m have trailing edges faster than leading edges. The peak of the M-component current lags behind the electric field peak by tens of microseconds, when the distance increases to 550m, the disparity of the time shift increases as well. However, the waveshape of the M-component current is similar to that of the magnetic field pulse. The M-component electric fields at 60m and 550m are 1.16kV/m and 0.17kV/m, respectively, and exhibit a logarithmic distance dependence which implies that the M-component charge density increases with height. Additionally, a two-wave model is used to examine the sensitivity of the predicted electric and magnetic fields to the speed and current reflection coefficient variations of the M-component. The simulated results show that the effects are different for the electric and magnetic fields. The M-component speed essentially controls the electric field, but has little effect on the magnetic field. Larger reflection coefficient results in a larger magnetic field, but a smaller electric field.
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DOI：
10.1007/s11430-007-0064-2
发表时间：
2006-12
期刊：
Science in China Series D: Earth Sciences
影响因子：
--
作者：
X. Qie;Qilin Zhang;Yunjun Zhou;G. Feng;Tinglong Zhang;Jing Yang;X. Kong;Qingfu Xiao;Shujun Wu
通讯作者：
X. Qie;Qilin Zhang;Yunjun Zhou;G. Feng;Tinglong Zhang;Jing Yang;X. Kong;Qingfu Xiao;Shujun Wu
影响因子：
64.8
作者：
S. Moreland
通讯作者：
S. Moreland
DOI：
10.1049/ji-2.1941.0065
发表时间：
1941-12
期刊：
Journal of the Institution of Electrical Engineers - Part II: Power Engineering
影响因子：
--
作者：
C. Bruce;R. H. Golde
通讯作者：
C. Bruce;R. H. Golde
影响因子：
--
作者：
Jing Yang;X. Qie;Guang-shu Zhang;Qilin Zhang;G. Feng;Yang Zhao;R. Jiang
通讯作者：
Jing Yang;X. Qie;Guang-shu Zhang;Qilin Zhang;G. Feng;Yang Zhao;R. Jiang
影响因子：
--
作者：
KITAGAWA, N;WORKMAN, EJ;BROOK, M
通讯作者：
BROOK, M