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DOI | 10.1029/2020GL090274 |
Prima facie evidence of the fast impact of a lightning stroke on the lower ionosphere | |
Zilong Qin; Mingli Chen; Fanchao Lyu; Steven A. Cummer; Yan Gao; Feifan Liu; Baoyou Zhu; Ya‐; ping Du; Asif Usmani; Zongxu Qiu | |
2020-10-19 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
英文摘要 | Studies show that intense lightning discharges can perturb nighttime lower ionosphere through induced electromagnetic fields. We report here new evidence that every lightning stroke, regardless of intensity, has an impact on both daytime and nighttime lower ionosphere. Through analysis of thousands of negative cloud‐to‐ground lightning strokes in southern China, we find that skywave features of a lightning sferic is closely related to its source intensity. Variations with increasing lightning intensity show a higher reflectivity from nighttime ionosphere, but a larger time delay from daytime ionosphere. It also shows that the ionosphere recovers from the lightning impact in a time shorter than tens of milliseconds. This suggests that there exists a direct and fast non‐linear coupling between lightning‐generated electromagnetic fields and lower ionosphere, making the ionospheric response to a lightning stroke dependent of the lightning intensity. A candidate mechanism for this is the Joule heating effect, but it needs future studies. |
领域 | 气候变化 |
URL | 查看原文 |
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/300184 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Zilong Qin,Mingli Chen,Fanchao Lyu,et al. Prima facie evidence of the fast impact of a lightning stroke on the lower ionosphere[J]. Geophysical Research Letters,2020. |
APA | Zilong Qin.,Mingli Chen.,Fanchao Lyu.,Steven A. Cummer.,Yan Gao.,...&Zongxu Qiu.(2020).Prima facie evidence of the fast impact of a lightning stroke on the lower ionosphere.Geophysical Research Letters. |
MLA | Zilong Qin,et al."Prima facie evidence of the fast impact of a lightning stroke on the lower ionosphere".Geophysical Research Letters (2020). |
条目包含的文件 | 条目无相关文件。 |
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