globalchange  > 气候减缓与适应
DOI: 10.1002/2014GL062127
论文题名:
Burst of intracloud current pulses during the initial continuous current in a rocket-triggered lightning flash
作者: Lu G.; Jiang R.; Qie X.; Zhang H.; Sun Z.; Liu M.; Wang Z.; Liu K.
刊名: Geophysical Research Letters
ISSN: 0094-9468
EISSN: 1944-9199
出版年: 2014
卷: 41, 期:24
起始页码: 9174
结束页码: 9181
语种: 英语
英文关键词: initial continuous current ; low-frequency magnetic radiation ; positive leader stepping ; rocket-triggered lightning
Scopus关键词: Imaging systems ; Lightning protection ; Rockets ; Frequency ranges ; Interpulse interval ; Long sequences ; Magnetic radiation ; Positive leaders ; Triggered lightning ; Vertical direction ; Very high frequency ; Magnetic polarity ; cloud cover ; cloud to ground lightning ; current velocity ; imaging method ; magnetic intensity ; spacecraft ; timescale ; trigger mechanism
英文摘要: For a rocket-triggered lightning flash on 2 August 2013, the measurement with one pair of broadband low-frequency (20-400 kHz) magnetic induction coils registered a long sequence of over 600 intermittent pulses during the initial continuous current. The timescale of these pulses is about 3-8 μs, and the typical interpulse interval is about 30 μs. The source discharges of these pulses, which are not readily detectable in the frequency range (140-300 MHz) of a short-baseline very high frequency (VHF) lightning imaging system, are attributed to the stepping processes when the positive leader propagated into the cloud region. The reversals in the polarity of magnetic pulses are related to the variation in the vertical direction of positive leader propagation as resolved by the VHF imaging system. Key Points Observation of a long sequence of magnetic pulses during ICCConnection between the burst of magnetic pulses with positive leader steppingTransition from VHF to LF in the radiation pattern of positive leader ©2014. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921881797&doi=10.1002%2f2014GL062127&partnerID=40&md5=fbec95ce3b5cce7dae0d64177df57aad
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6732
Appears in Collections:气候减缓与适应

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作者单位: Key Laboratory of Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China

Recommended Citation:
Lu G.,Jiang R.,Qie X.,et al. Burst of intracloud current pulses during the initial continuous current in a rocket-triggered lightning flash[J]. Geophysical Research Letters,2014-01-01,41(24).
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