DOI: 10.1002/2014GL062196
论文题名: The source altitude, electric current, and intrinsic brightness of terrestrial gamma ray flashes
作者: Cummer S.A. ; Briggs M.S. ; Dwyer J.R. ; Xiong S. ; Connaughton V. ; Fishman G.J. ; Lu G. ; Lyu F. ; Solanki R.
刊名: Geophysical Research Letters
ISSN: 0094-9509
EISSN: 1944-9240
出版年: 2014
卷: 41, 期: 23 起始页码: 8586
结束页码: 8593
语种: 英语
英文关键词: lightning
; terrestrial gamma ray flash
Scopus关键词: Ionosphere
; Lightning
; Luminance
; Thunderstorms
; High-energy radiations
; Lightning process
; Low-frequency
; Nonlinear effect
; Radio emission
; Runaway electrons
; Source region
; Terrestrial Gamma ray Flashes
; Gamma rays
; altitude
; electric field
; gamma ray radiation
; ionosphere
; lightning
; nonlinearity
; planetary atmosphere
; radio wave
; thunderstorm
英文摘要: Many details of how thunderstorms generate terrestrial gamma ray flashes (TGFs) and other forms of high-energy radiation remain uncertain, including the basic question of where they are produced. We exploit the association of distinct low-frequency radio emissions with generation of terrestrial gamma ray flashes (TGFs) to directly measure for the first time the TGF source altitude. Analysis of two events reveals source altitudes of 11.8 ± 0.4 km and 11.9 ± 0.9 km. This places the source region in the interior of the thunderstorm between the two main charge layers and implies an intrinsic TGF brightness of approximately 1018 runaway electrons. The electric current in this nontraditional lightning process is found to be strong enough to drive nonlinear effects in the ionosphere, and in one case is comparable to the highest peak current lightning processes on the planet. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921549533&doi=10.1002%2f2014GL062196&partnerID=40&md5=f09a6f2cb647bf885d8ae5aef96a0227
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6773
Appears in Collections: 气候减缓与适应
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作者单位: Electrical and Computer Engineering Department, Duke University, Durham, NC, United States
Recommended Citation:
Cummer S.A.,Briggs M.S.,Dwyer J.R.,et al. The source altitude, electric current, and intrinsic brightness of terrestrial gamma ray flashes[J]. Geophysical Research Letters,2014-01-01,41(23).