Comparison of results from sprite streamer modeling with spectrophotometric measurements by ISUAL instrument on FORMOSAT‐2 satellite
Comparison of results from sprite streamer modeling with spectrophotometric measurements by ISUAL instrument on FORMOSAT‐2 satellite
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精灵流光建模结果与 FORMOSAT-2 卫星 ISUAL 仪器分光光度测量结果的比较
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
Y. Takahashi
中科院分区：
文献类型：
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作者：
Ningyu Liu;V. Pasko;David H. Burkhardt;H. Frey;S. Mende;H. Su;A. Chen;R. Hsu;Lou‐Chuang Lee;H. Fukunishi;Y. Takahashi
通过SPRITE流光模拟和FORMOSAT-2卫星ISUAL仪器的测量，分别得到了N_2~N_2 LBH带的第二正带系统、N_2~+的第一负带系统和N_2的第一正带系统的三个强度比。得到的比值之间的直接比较表明，为了解释ISUAL光谱数据，驱动观测到的精灵事件发射的最大场必须大于传统击穿阈值场的三倍。这些发现与一种假设是一致的，即在最初的精灵发展过程中观测到的大部分精灵排放来自与精灵飘带尖端相关的局部高场区域。
Three intensity ratios of the second positive band system of N2 to N2 LBH band system, the first negative band system of N2+, and the first positive band system of N2 are obtained separately from sprite streamer modeling and from measurements by ISUAL instrument on FORMOSAT‐2 satellite. The direct comparison between the obtained ratios indicates that in order to explain the ISUAL spectrophotometric data the maximum field driving the emissions of an observed sprite event must be greater than three times of the conventional breakdown threshold field. These findings are consistent with an assumption that most of the observed sprite emissions during initial sprite development originate from localized high field regions associated with tips of sprite streamers.