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DOI | 10.1029/2018JD030014 |
The Propagation Effects of Lightning Electromagnetic Fields Over Mountainous Terrain in the Earth-Ionosphere Waveguide | |
Li, Dongshuai1; Luque, Alejandro1; Rachidi, Farhad2; Rubinstein, Marcos3; Azadifar, Mohammad3; Diendorfer, Gerhard4; Pichler, Hannes4 | |
2019-12-26 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:24页码:14198-14219 |
文章类型 | Article |
语种 | 英语 |
国家 | Spain; Switzerland; Austria |
英文摘要 | In this paper, a full-wave two-dimensional Finite-Difference-Time-Domain model is developed to evaluate the propagation effects of lightning electromagnetic fields over mountainous terrain in the Earth-ionosphere waveguide. In the model, we investigate the effect of the Earth-ionosphere waveguide structure and medium parameters, including the effect of the ionospheric cold plasma characteristics, the effect of the Earth curvature, and the propagation effects over mountainous terrain. For the first time, the obtained results are validated against simultaneous experimental data consisting of lightning currents measured at the Santis Tower and electric fields measured in Neudorf, Austria, located at 380-km distance from the tower. It is shown that both the time delays and amplitudes of the lightning electromagnetic fields at 380-km distance can be strongly affected by the ionospheric electron density profile, the mountainous terrain, and the Earth curvature. After taking into account the effect of the irregular terrain between the Santis Tower and the field measurement station, the vertical electric fields calculated by using our model are found to be in good agreement with the corresponding measured cases occurred in both daytime and nighttime. The ideal approximation used in either the classical solutions or the simplified models might lead to inaccuracies in the estimated reflection height. Furthermore, we discuss the sensitivity of our results by considering different return stroke models, as well as different typical values of the return stroke speed and of the ground conductivity. |
英文关键词 | FDTD Lightning electromagnetic fields Mountainous terrain Earth-ionosphere waveguide |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000504438900001 |
WOS关键词 | VLF-LF PROPAGATION ; TRANSMISSION ; MODEL ; COMPUTATION ; PHASE ; AMPLITUDE ; RECORDS ; PULSES |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/225978 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.CSIC, IAA, Granada, Spain; 2.Swiss Fed Inst Technol EPFL, Electromagnet Compatibil Lab, Lausanne, Switzerland; 3.Univ Appl Sci Western Switzerland, Yverdon Les Baines, Switzerland; 4.OVE Serv Gmbh, Dept ALDIS Austrian Lightning Detect & Informat s, Vienna, Austria |
推荐引用方式 GB/T 7714 | Li, Dongshuai,Luque, Alejandro,Rachidi, Farhad,et al. The Propagation Effects of Lightning Electromagnetic Fields Over Mountainous Terrain in the Earth-Ionosphere Waveguide[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(24):14198-14219. |
APA | Li, Dongshuai.,Luque, Alejandro.,Rachidi, Farhad.,Rubinstein, Marcos.,Azadifar, Mohammad.,...&Pichler, Hannes.(2019).The Propagation Effects of Lightning Electromagnetic Fields Over Mountainous Terrain in the Earth-Ionosphere Waveguide.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(24),14198-14219. |
MLA | Li, Dongshuai,et al."The Propagation Effects of Lightning Electromagnetic Fields Over Mountainous Terrain in the Earth-Ionosphere Waveguide".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.24(2019):14198-14219. |
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