DOI: 10.1002/2015GL065620
论文题名: Observation of a new class of electric discharges within artificial clouds of charged water droplets and its implication for lightning initiation within thunderclouds
作者: Kostinskiy A.Y. ; Syssoev V.S. ; Bogatov N.A. ; Mareev E.A. ; Andreev M.G. ; Makalsky L.M. ; Sukharevsky D.I. ; Rakov V.A.
刊名: Geophysical Research Letters
ISSN: 0094-8554
EISSN: 1944-8285
出版年: 2015
卷: 42, 期: 19 起始页码: 8165
结束页码: 8171
语种: 英语
英文关键词: cloud
; discharge
; leaders
; lightning
; lightning initiation
; streamers
Scopus关键词: Cameras
; Clouds
; Complex networks
; Discharge (fluid mechanics)
; Drops
; Lightning
; Channel morphology
; Collective process
; Hierarchical network
; In-cloud discharge
; Leaders
; Lightning initiation
; Plasma formations
; Streamers
; Electric discharges
; channel morphology
; cloud radiative forcing
; droplet
; electric field
; lightning
; plasma
; thundercloud
; videography
英文摘要: We have observed unusual plasma formations (UPFs) in artificial clouds of charged water droplets using a high-speed infrared camera operating in conjunction with a high-speed visible-range camera. Inferred plasma parameters were close to those of long-spark leaders observed in the same experiments, while the channel morphology was distinctly different from that of leaders, so that UPFs can be viewed as a new type of in-cloud discharge. These formations can occur in the absence of spark leaders and appear to be manifestations of collective processes building, essentially from scratch, a complex hierarchical network of interacting channels at different stages of development (some of which are hot and live for milliseconds). We believe that the phenomenon should commonly occur in thunderclouds and might give insights on the missing link in the still poorly understood lightning initiation process. Key Points High-speed infrared images allowed us to discover a new type of in-cloud discharges These discharges (UPFs) can occur both with and without spark UPF morphology is distinctly different from that of leaders © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84947023523&doi=10.1002%2f2015GL065620&partnerID=40&md5=e6346b1bc85fc36bf691392679b26f43
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8170
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: Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russian Federation
Recommended Citation:
Kostinskiy A.Y.,Syssoev V.S.,Bogatov N.A.,et al. Observation of a new class of electric discharges within artificial clouds of charged water droplets and its implication for lightning initiation within thunderclouds[J]. Geophysical Research Letters,2015-01-01,42(19).