التفاصيل البيبلوغرافية
| العنوان: |
On the Propagation of Lightning-Radiated Electromagnetic Fields Across a Mountain. |
| المؤلفون: |
Hou, Wenhao, Azadifar, Mohammad, Rubinstein, Marcos, Rachidi, Farhad, Zhang, Qilin |
| المصدر: |
IEEE Transactions on Electromagnetic Compatibility; Oct2020, Vol. 62 Issue 5, p2137-2147, 11p |
| مصطلحات موضوعية: |
ELECTROMAGNETIC fields, FINITE difference time domain method, MOUNTAIN wave, ELECTROMAGNETIC wave propagation, MOUNTAINS, ELECTROMAGNETIC waves, MOUNTAIN soils |
| مستخلص: |
In this article, the effect of a mountain located on the propagation path of lightning-radiated electromagnetic fields was systematically studied by using the two-dimensional finite-difference time-domain method (2-D FDTD), considering the influence of the return stroke (RS) type, the ground conductivity, the mountain height and the width at the base, its position, and the observation distance. The field peak reduction and the wave arrival time delay, compared with those for the perfectly conducting flat ground, are analyzed in detail. The results show that, with an increase in the mountain height, the field peak reduces and the wave arrival time delay increases. The wave arrival time is insensitive to the change of mountain widths. The terrain envelope method can be used to estimate the additional time delay introduced by the mountain. For a mountain lower than 1 km or so, the additional attenuation effect of the mountain on the field peak can be ignored for most practical purposes. Furthermore, the propagation process of the lightning-radiated electromagnetic wave over the mountain was studied by analyzing the spatiotemporal evolution characteristics of the field. The analysis shows that the electromagnetic wave propagates to the back of the mountain through the diffraction process at the mountaintop. [ABSTRACT FROM AUTHOR] |
|
Copyright of IEEE Transactions on Electromagnetic Compatibility is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
