DOI: 10.1002/2013GL058502
论文题名: Illumination of mesospheric irregularity by lightning discharge
作者: Füllekrug M. ; Mezentsev A. ; Soula S. ; Van Der Velde O. ; Evans A.
刊名: Geophysical Research Letters
ISSN: 0094-8280
EISSN: 1944-8011
出版年: 2013
卷: 40, 期: 24 起始页码: 6411
结束页码: 6416
语种: 英语
英文关键词: lightning
; mesosphere
; sprite
Scopus关键词: Cloud-to-ground lightning
; Intracloud discharge
; Lightning discharge
; Marine navigation
; mesosphere
; Quasi-static electric field
; sprite
; Theoretical modeling
; Electromagnetic fields
; Wave propagation
; Lightning
; cloud to ground lightning
; electromagnetic field
; experimental study
; mesosphere
; radio wave
; sprite
; thundercloud
; wave propagation
英文摘要: Theoretical model calculations recently predicted the existence of mesospheric irregularities which assist the initiation of sprites. Here we report the experimental detection of a ∼3-19 km3 large mesospheric irregularity at ∼80-85 km height which is illuminated by the electromagnetic field of an intense positive cloud-to-ground lightning discharge. While the lightning discharge causes a prompt group of four sprites above the lightning discharge, the mesospheric irregularity is found at a horizontal distance at least ∼15-20 km away from the sprite group and it rebrightens ∼40-60 ms after the sprite group occurrence. This rebrightening is driven by a local quasi-static electric field enhancement with a charge moment ∼4-20 Ckm which causes the irregularity to develop a downward descending luminous column from ∼75-85 km height. The quasi-static electric field enhancement is caused by the reorganization of residual charge inside the thundercloud during a high-level activity of intracloud discharges with ∼10-20 pulses per ms. Such mesospheric irregularities might have an effect on the wave propagation of 100 kHz radio waves which are used for atomic time transfer and marine navigation. © 2013. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84890463117&doi=10.1002%2f2013GL058502&partnerID=40&md5=912fa60dfbbc633a2bef8b203648f5c9
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5544
Appears in Collections: 气候减缓与适应
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作者单位: Centre for Space, Atmospheric and Oceanic Science, Department of Electronic and Electrical Engineering, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom
Recommended Citation:
Füllekrug M.,Mezentsev A.,Soula S.,et al. Illumination of mesospheric irregularity by lightning discharge[J]. Geophysical Research Letters,2013-01-01,40(24).