Observations of the Wire Destruction and Plasma Channel Reestablishment Process During the Initial Stage of Triggered Lightning
Abstract The wire destruction and plasma channel reestablishment process during the initial stage of a triggered lightning is analyzed based on comprehensive observations, including very high frequency (VHF) mapping array, electric‐magnetic field, and high‐speed video. The detailed discharge process...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-02-01
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| Series: | Geophysical Research Letters |
| Online Access: | https://doi.org/10.1029/2019GL086001 |
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| author | Shulei Li Shi Qiu Lihua Shi Yun Li Wansheng Dong |
| author_facet | Shulei Li Shi Qiu Lihua Shi Yun Li Wansheng Dong |
| author_sort | Shulei Li |
| collection | DOAJ |
| description | Abstract The wire destruction and plasma channel reestablishment process during the initial stage of a triggered lightning is analyzed based on comprehensive observations, including very high frequency (VHF) mapping array, electric‐magnetic field, and high‐speed video. The detailed discharge processes in both the attempted reconnection process and reconnection process are firstly evidenced by VHF mapping results. The reconnection process is similar to a leader/return‐stroke sequence, while the attempted reconnection process involves more complicated discharges. It is shown that several segments of the wire are fused firstly due to inhomogeneity of the wire, resulting in a series of wire residues. Thereafter, downward extending VHF breakdowns dispersed over hundreds of meters in altitude followed by a recoil‐like event, both of which emitted fairly weak VHF radiation, and no detectable LF electromagnetic field change was observed. It is indicated that there are no significant current flowing or charges movement during the attempted reconnection process. |
| format | Article |
| id | doaj-art-bf6bf2d67fce42e29d05be47cdac7216 |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2020-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-bf6bf2d67fce42e29d05be47cdac72162025-08-20T03:49:32ZengWileyGeophysical Research Letters0094-82761944-80072020-02-01473n/an/a10.1029/2019GL086001Observations of the Wire Destruction and Plasma Channel Reestablishment Process During the Initial Stage of Triggered LightningShulei Li0Shi Qiu1Lihua Shi2Yun Li3Wansheng Dong4National Key Laboratory on Electromagnetic Environmental Effects and Electro‐Optical Engineering Army Engineering University Nanjing ChinaNational Key Laboratory on Electromagnetic Environmental Effects and Electro‐Optical Engineering Army Engineering University Nanjing ChinaNational Key Laboratory on Electromagnetic Environmental Effects and Electro‐Optical Engineering Army Engineering University Nanjing ChinaNational Key Laboratory on Electromagnetic Environmental Effects and Electro‐Optical Engineering Army Engineering University Nanjing ChinaLaboratory of Lightning Physics and Protection Engineering, State Key Laboratory of Severe Weather Chinese Academy of Meteorological Sciences Beijing ChinaAbstract The wire destruction and plasma channel reestablishment process during the initial stage of a triggered lightning is analyzed based on comprehensive observations, including very high frequency (VHF) mapping array, electric‐magnetic field, and high‐speed video. The detailed discharge processes in both the attempted reconnection process and reconnection process are firstly evidenced by VHF mapping results. The reconnection process is similar to a leader/return‐stroke sequence, while the attempted reconnection process involves more complicated discharges. It is shown that several segments of the wire are fused firstly due to inhomogeneity of the wire, resulting in a series of wire residues. Thereafter, downward extending VHF breakdowns dispersed over hundreds of meters in altitude followed by a recoil‐like event, both of which emitted fairly weak VHF radiation, and no detectable LF electromagnetic field change was observed. It is indicated that there are no significant current flowing or charges movement during the attempted reconnection process.https://doi.org/10.1029/2019GL086001 |
| spellingShingle | Shulei Li Shi Qiu Lihua Shi Yun Li Wansheng Dong Observations of the Wire Destruction and Plasma Channel Reestablishment Process During the Initial Stage of Triggered Lightning Geophysical Research Letters |
| title | Observations of the Wire Destruction and Plasma Channel Reestablishment Process During the Initial Stage of Triggered Lightning |
| title_full | Observations of the Wire Destruction and Plasma Channel Reestablishment Process During the Initial Stage of Triggered Lightning |
| title_fullStr | Observations of the Wire Destruction and Plasma Channel Reestablishment Process During the Initial Stage of Triggered Lightning |
| title_full_unstemmed | Observations of the Wire Destruction and Plasma Channel Reestablishment Process During the Initial Stage of Triggered Lightning |
| title_short | Observations of the Wire Destruction and Plasma Channel Reestablishment Process During the Initial Stage of Triggered Lightning |
| title_sort | observations of the wire destruction and plasma channel reestablishment process during the initial stage of triggered lightning |
| url | https://doi.org/10.1029/2019GL086001 |
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