Electric fields and electron energies inferred from the ISUAL recorded sprites

Cheng Ling Kuo, R. R. Hsu, A. B. Chen, H. T. Su, L. C. Lee, S. B. Mende, H. U. Frey, H. Fukunishi, Y. Takahashi

研究成果: 雜誌貢獻期刊論文同行評審

81 引文 斯高帕斯(Scopus)

摘要

Electron energies and the strenght of electric fields in sprites are deduced for five selected events, which were recorded by the space-borne instrument called ISUAL (Imager of Sprites and Upper Atmospheric Lightning; a payload on the FORMOSAT-2 satellite). From the derived peak intensity ratios of spectrophotometer channel 2 (centered at 337 nm) and channel 3 (centered at 391.4 nm) of these sprites, the average and characteristic electron energies were found to be in the range of 6.2-9.2 eV and 4.5-6.5 eV, respectively. The estimated E/N at 40-60 km is 243-443 Td and the strength of the electric field is 2.1 - 3.7 times that of the atmosphere breakdown E-field at these altitudes. The inferred electron energies and the strength of electric fields are about two times higher than those inferred from ground campaigns. However, they are consistent with the prediction of the sprite streamer model.

原文???core.languages.en_GB???
文章編號L19103
頁(從 - 到)1-4
頁數4
期刊Geophysical Research Letters
32
發行號19
DOIs
出版狀態已出版 - 16 10月 2005

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