| DOI: | 10.1002/2015GL064862
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| 论文题名: | Elve doublets and compact intracloud discharges |
| 作者: | Marshall R.A.; Da Silva C.L.; Pasko V.P.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9424
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| EISSN: | 1944-9155
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| 出版年: | 2015
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| 卷: | 42, 期:14 | | 起始页码: | 6112
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| 结束页码: | 6119
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| 语种: | 英语
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| 英文关键词: | CID
; elve
; ionosphere
; lightning
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| Scopus关键词: | Ionosphere
; Luminance
; Time delay
; CID
; Electromagnetic simulation
; Elve
; Geometric calculations
; Intracloud discharge
; Optical signatures
; Relative brightness
; Lightning
; brightness temperature
; electromagnetic field
; ionosphere
; lightning
; thundercloud
|
| 英文摘要: | We present evidence of ionospheric optical signatures of lightning, known as elves, which sometimes occur in pairs separated in time by ∼80-160 μs. We demonstrate that these "elve doublets" are the ionospheric signature of compact intracloud discharges (CIDs), which are extremely powerful, compact discharges that are thought to occur near the tops of thunderclouds. In this paper, using simple geometric calculations and full electromagnetic simulations, we show that CIDs from altitudes 14-22 km explain the time delay observed in elve doublets, consistent with typical CID altitudes. Furthermore, we show that the relative brightness of the first and second elves in the doublet is likely related to the orientation of the CID, and angles of 5°- 20° with respect to the vertical are consistent with the observed brightness ratios. © 2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938962666&doi=10.1002%2f2015GL064862&partnerID=40&md5=47f8bc362323354a8c99e80d20e7b254
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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/9039
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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: | Department of Aeronautics and Astronautics, Stanford University, Stanford, CA, United States
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| Recommended Citation: | |
Marshall R.A.,Da Silva C.L.,Pasko V.P.. Elve doublets and compact intracloud discharges[J]. Geophysical Research Letters,2015-01-01,42(14).
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