| DOI: | 10.1002/2015GL063269
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| 论文题名: | Dynamics of sprite streamers in varying air density |
| 作者: | Qin J.; Pasko V.P.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8861
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| EISSN: | 1944-8592
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| 出版年: | 2015
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| 卷: | 42, 期:6 | | 起始页码: | 2031
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| 结束页码: | 2036
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| 语种: | 英语
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| 英文关键词: | lightning
; modeling
; similarity laws
; sprites
; streamers
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| Scopus关键词: | Electric discharges
; Electric fields
; Lightning
; Models
; Laboratory conditions
; Mesospheric sprites
; Physical dimensions
; Similarity law
; Similarity relations
; Sprites
; Streamer discharges
; Streamers
; Air
; air temperature
; altitude
; atmospheric pressure
; density
; electric field
; simulation
; sprite
|
| 英文摘要: | Similarity laws for streamer discharges, which state that the properties of streamers such as streamer radius, electric field, and electron density should respectively scale as N-1, N1, and N2 in different but uniform air densities N, are important relations that have provided a general understanding of the mesospheric sprite discharges based on existing knowledge of streamers in laboratory conditions. Recent modeling studies, however, show that the properties of sprite streamers in varying air density do not follow exactly or even contradict the similarity relations. We present here simulation results and related analysis of sprite streamers to provide a unified view and resolve these contradictions. Our results indicate that the properties of streamers in varying air density are determined by the physical dimensions of streamers and the reduced electric field E/N, with the varying air density N being only one of the three factors controlling the streamer properties. Key Points Air density is only one of the three factors affecting streamer dynamics Initial conditions and applied electric field are the other two factors Sprite streamers are smaller at lower altitudes due to branching ©2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84927794564&doi=10.1002%2f2015GL063269&partnerID=40&md5=4651d1900520c4b81a423f0330524920
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8477
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Communications and Space Sciences Laboratory, Department of Electrical Engineering, Pennsylvania State University, University Park, PA, United States
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| Recommended Citation: | |
Qin J.,Pasko V.P.. Dynamics of sprite streamers in varying air density[J]. Geophysical Research Letters,2015-01-01,42(6).
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