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DOI | 10.1029/2018JD029440 |
A Comparative Study of the Ray Theory Model With the Finite Difference Time Domain Model for Lightning Sferic Transmission in Earth-Ionosphere Waveguide | |
Qin, Zilong1; Cummer, Steven A.2; Chen, Mingli1; Lyu, Fanchao1,2; Du, Ya-ping1 | |
2019-03-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:6页码:3335-3349 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | The lightning sferic has been shown to be a valuable radio signal for detecting perturbations of the lower ionosphere caused by the lightning activity itself and by other terrestrial and space events (Shao et al., 2012, https://doi.org/10.1038/ngeo1668). Adding to many existing methods, we have recently proposed an improved ray theory (RT) model for investigating the lightning sferic transmission in the Earth-ionosphere waveguide (Qin et al., 2017, https://doi.org/10.1002/2016JD025599). In the present study, a further modification to the RT model was made to increase its accuracy in modeling the lightning sferic in a broader frequency band and a larger distance range. The modification included two aspects: a new incident angle finding technique and a novel method for deriving the high-order hop series. To quantitatively evaluate the effectiveness of the modification, a comparative study of this modified RT model with its previous version and the full-wave finite difference time domain model was carried out. The results showed that this modified RT model did better than its previous version and was in close agreement with the full-wave finite difference time domain method in modeling the lightning sferic in frequencies bands lower to 3, 5, and 7kHz for distances up to 500, 800, and 1,000km, respectively. |
英文关键词 | lightning sferics lower ionosphere Earth-ionosphere waveguide ray theory FDTD method |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000464653500029 |
WOS关键词 | D-REGION ENHANCEMENTS ; NUMERICAL-CALCULATION ; SOLAR-FLARE ; PROPAGATION ; PROFILES |
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/181729 |
专题 | 气候变化 |
作者单位 | 1.Hong Kong Polytech Univ, Dept Bldg Serv Engn, Hong Kong, Peoples R China; 2.Duke Univ, Elect & Comp Engn Dept, Durham, NC USA |
推荐引用方式 GB/T 7714 | Qin, Zilong,Cummer, Steven A.,Chen, Mingli,et al. A Comparative Study of the Ray Theory Model With the Finite Difference Time Domain Model for Lightning Sferic Transmission in Earth-Ionosphere Waveguide[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(6):3335-3349. |
APA | Qin, Zilong,Cummer, Steven A.,Chen, Mingli,Lyu, Fanchao,&Du, Ya-ping.(2019).A Comparative Study of the Ray Theory Model With the Finite Difference Time Domain Model for Lightning Sferic Transmission in Earth-Ionosphere Waveguide.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(6),3335-3349. |
MLA | Qin, Zilong,et al."A Comparative Study of the Ray Theory Model With the Finite Difference Time Domain Model for Lightning Sferic Transmission in Earth-Ionosphere Waveguide".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.6(2019):3335-3349. |
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