Quantitative Relationship Between Current Pulses and Associated Low-Frequency Magnetic Fields During Initial Stage of Rocket-Triggered Lightning | |
Li, Xiao5; Lu, Gaopeng3,4,5; Wang, Ziyi5; Jiang, Rubin2; Fan, Yanfeng1; Zi, Yucheng5; Liu, Feifan5; Qamar, Kainat5; Nambalirwa, Alice5; Shi, Tao5 | |
刊名 | RADIO SCIENCE |
2023-10-01 | |
卷号 | 58 |
关键词 | precursory discharge low-frequency magnetic field transmission-line (TL) model channel-base current rocket-triggered lightning |
ISSN号 | 0048-6604 |
DOI | 10.1029/2022RS007647 |
通讯作者 | Lu, Gaopeng(gaopenglu@gmail.com) |
英文摘要 | The quantitative relationship between the channel-base current and the associated low-frequency magnetic field (B-field) during the early stage of rocket-triggered lightning was examined based on field experiments and numerical simulation. There is a good correlation between the current pulse and the corresponding B-field pulse in terms of amplitude and duration. In specific, the duration of current pulse is approximately proportional to that of the corresponding B-field pulse for precursors and initial upward leaders; as for the pulse amplitude, the linear correlation is more apparent for the initial upward leaders when compared to the precursors, with the ratio of B-field pulse and current pulse between 1.7 and 2.0, which is always greater than that (0.97-1.32) for the precursors. A response function is established to show the quantitative relationship in the time domain between the current pulse and the associated B-field pulse, which is considered as the convolution of the current pulse and the response function. Meanwhile, the current waveform can be obtained if the measured B-field pulse is de-convolved with the response function. The simulation results are in good agreement with the measurement, which proves that our approach is accurate and efficient to quantify the relationship between the current and the B-field pulse of the initial leader discharges. The lightning magnetic field is associated with lightning current flow, and quantifying the relationship between the current and magnetic field is very important for us to calculate the magnetic field distribution of the lightning channel or retrieve the lightning current by using a telemetry magnetic field. Previous studies have also given the statistical relationship between the current peak and the magnetic field peak, but it is not enough to reflect the corresponding relationship in the time-domain waveform changes between them. We set up equipment to measure the current and magnetic field synchronously in the rocket-triggered lightning and study their quantitative relationship using measured data. Therefore, a modified transmission line model suiting the initial leader discharges with reference to the return stroke model is established to show the quantitative correspondence between the magnetic field and the current in the time domain by a response function (sequence). A comparison between the simulation results and the measurements verified the effectiveness of this method. Quantitative relationship between the current pulse and associated B-field pulse for precursors and initial upward positive leader (iUPL) of triggered lightning is examinedThe peak ratio of B-field pulse versus current pulse for during the iUPL stage is larger than that for the precursory pulsesA response function is found to show the quantitative correspondence between the B-field pulse and the current pulse in the time domain |
资助项目 | This work was supported by the National Key Ramp;D Program of China (2017YFC1501501), Youth Innovation Fund project of the university (WK2080000172), the CAS Project of Stable Support for Youth Team in Basic Research Field (YSRR-018), Natural Science Foun[2017YFC1501501] ; National Key Ramp;D Program of China[WK2080000172] ; Youth Innovation Fund project of the university[YSRR-018] ; CAS Project of Stable Support for Youth Team in Basic Research Field[41875006] ; CAS Project of Stable Support for Youth Team in Basic Research Field[U1938115] ; Natural Science Foundation of China ; Chinese Meridian Project[183311KYSB20200003] ; International Partnership Program of the Chinese Academy of Sciences |
WOS关键词 | TRANSMISSION-LINE MODEL ; MECHANISM |
WOS研究方向 | Astronomy & Astrophysics ; Geochemistry & Geophysics ; Meteorology & Atmospheric Sciences ; Remote Sensing ; Telecommunications |
语种 | 英语 |
出版者 | AMER GEOPHYSICAL UNION |
WOS记录号 | WOS:001074679600001 |
资助机构 | This work was supported by the National Key Ramp;D Program of China (2017YFC1501501), Youth Innovation Fund project of the university (WK2080000172), the CAS Project of Stable Support for Youth Team in Basic Research Field (YSRR-018), Natural Science Foun ; National Key Ramp;D Program of China ; Youth Innovation Fund project of the university ; CAS Project of Stable Support for Youth Team in Basic Research Field ; Natural Science Foundation of China ; Chinese Meridian Project ; International Partnership Program of the Chinese Academy of Sciences |
内容类型 | 期刊论文 |
源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/132492] |
专题 | 中国科学院合肥物质科学研究院 |
通讯作者 | Lu, Gaopeng |
作者单位 | 1.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Atmospher Phys, Key Lab Middle Atmosphere & Global Environm Observ, Beijing, Peoples R China 3.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteorol, Nanjing, Peoples R China 4.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Atmospher Opt, HFIPS, Hefei, Peoples R China 5.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei, Peoples R China |
推荐引用方式 GB/T 7714 | Li, Xiao,Lu, Gaopeng,Wang, Ziyi,et al. Quantitative Relationship Between Current Pulses and Associated Low-Frequency Magnetic Fields During Initial Stage of Rocket-Triggered Lightning[J]. RADIO SCIENCE,2023,58. |
APA | Li, Xiao.,Lu, Gaopeng.,Wang, Ziyi.,Jiang, Rubin.,Fan, Yanfeng.,...&Zhu, Baoyou.(2023).Quantitative Relationship Between Current Pulses and Associated Low-Frequency Magnetic Fields During Initial Stage of Rocket-Triggered Lightning.RADIO SCIENCE,58. |
MLA | Li, Xiao,et al."Quantitative Relationship Between Current Pulses and Associated Low-Frequency Magnetic Fields During Initial Stage of Rocket-Triggered Lightning".RADIO SCIENCE 58(2023). |
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