DOI: 10.1002/grl.50742
论文题名: Properties of the thundercloud discharges responsible for terrestrial gamma-ray flashes
作者: Dwyer J.R. ; Liu N. ; Rassoul H.K.
刊名: Geophysical Research Letters
ISSN: 0094-8712
EISSN: 1944-8443
出版年: 2013
卷: 40, 期: 15 起始页码: 4067
结束页码: 4073
语种: 英语
英文关键词: lightning
; terrestrial gamma-ray flashes
; Thunderclouds
Scopus关键词: Discharge path
; Electrical discharges
; Optical emissions
; Relativistic runaway electron
; Runaway electrons
; Terrestrial gamma-ray flashes
; Thunderclouds
; Visible light
; Electric fields
; Electric properties
; Lightning
; Gamma rays
; electric field
; gamma ray radiation
; optical property
; radio wave
; thundercloud
; visible spectrum
英文摘要: The source of terrestrial gamma-ray flashes (TGFs) has been an active area of research since their discovery by Compton Gamma-Ray Observatory/Burst and Transient Source Experiment in 1994. These intense bursts of gamma rays originate within thunderclouds via the rapid production of relativistic runaway electrons, accelerated by thundercloud/lightning electric fields to multi-MeV energies. Recent studies have shown that electrical discharges within thunderclouds caused by these runaway electrons can generate currents that rival those of lightning and so could serve as an alternative discharge path for thunderclouds. In particular, the discharges responsible for TGFs produce some of the largest amplitude VLF-LF radio pulses from thunderstorms and, indeed, were previously misidentified as lightning. In this article, we shall provide a brief review of TGFs and present calculations of their electrical properties inside thunderclouds and their gamma-ray and optical emissions. We shall show that the lightning-like events responsible for TGFs emit relatively little visible light and, thus, are inherently dark. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881173946&doi=10.1002%2fgrl.50742&partnerID=40&md5=8fbb164096d81f8a679d61917a4863a8
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5976
Appears in Collections: 气候减缓与适应
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作者单位: Department of Physics and Space Sciences, Florida Institute of Technology, 150 W. University Blvd., Melbourne, FL 32901, United States
Recommended Citation:
Dwyer J.R.,Liu N.,Rassoul H.K.. Properties of the thundercloud discharges responsible for terrestrial gamma-ray flashes[J]. Geophysical Research Letters,2013-01-01,40(15).