气候变化领域集成服务门户(CCPortal): Two Propagation Scenarios of Isolated Breakdown Lightning Processes in Failed Negative Cloud-to-Ground Flashes

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DOI	10.1029/2020GL090593
	Two Propagation Scenarios of Isolated Breakdown Lightning Processes in Failed Negative Cloud-to-Ground Flashes
	Kolmašová I.; Santolík O.; Defer E.; Kašpar P.; Kolínská A.; Pedeboy S.; Coquillat S.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:23
英文摘要	Isolated breakdown process (also known as attempted leader or inverted intra-cloud discharge) is a lightning phenomenon characterized by radio wave pulses similar to signatures of preliminary breakdown before negative cloud-to-ground flashes, but in this case no cloud-to-ground return strokes occur. We identified 128 isolated breakdown pulse trains in measurements collected in the Mediterranean by a broadband receiver (0.005–7 MHz) in 2015 and 2018. By combining these records with concurrent Lightning Mapping Array measurements of very high frequency radiation (60–66 MHz) emitted by in-cloud discharges we investigate the development of each discharge. We identify two scenarios: Either the discharges continue to propagate almost horizontally for more than 150 ms (73%), or they quickly fade out (27%). The geo-localized sources of the observed isolated breakdown pulse trains, together with their waveform characteristics (duration, inter-pulse intervals, regularity, and bipolar shapes) show that both scenarios are similar to initiation processes preceding negative cloud-to-ground flashes. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Lightning; Breakdown process; Broadband receivers; Cloud-to-ground flash; In-cloud discharge; Initiation process; Lightning mapping array; Very high frequency; Waveform characteristics; Clouds; atmospheric electricity; cloud to ground lightning; frequency analysis; radio wave; wave propagation; waveform analysis
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169309
作者单位	Department of Space Physics, Institute of Atmospheric Physics of the Czech Academy of Sciences, Prague, Czech Republic; Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic; Laboratoire d'Aérologie, Université de Toulouse, CNRS, OMP, UPS, Toulouse, France; Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University, Prague, Czech Republic; Météorage, Pau, France
推荐引用方式 GB/T 7714	Kolmašová I.,Santolík O.,Defer E.,et al. Two Propagation Scenarios of Isolated Breakdown Lightning Processes in Failed Negative Cloud-to-Ground Flashes[J],2020,47(23).
APA	Kolmašová I..,Santolík O..,Defer E..,Kašpar P..,Kolínská A..,...&Coquillat S..(2020).Two Propagation Scenarios of Isolated Breakdown Lightning Processes in Failed Negative Cloud-to-Ground Flashes.Geophysical Research Letters,47(23).
MLA	Kolmašová I.,et al."Two Propagation Scenarios of Isolated Breakdown Lightning Processes in Failed Negative Cloud-to-Ground Flashes".Geophysical Research Letters 47.23(2020).