Roles of the EMP and QE field in the generation of columniform sprites
Roles of the EMP and QE field in the generation of columniform sprites
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DOI：
10.1029/2003gl019081
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发表时间：
2004-02
影响因子：
5.2
通讯作者：
T. Adachi;H. Fukunishi;Y. Takahashi;M. Sato
中科院分区：
文献类型：
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作者：
T. Adachi;H. Fukunishi;Y. Takahashi;M. Sato
为了阐明精灵和它们的成因云-地闪电放电之间的电动力学耦合过程，我们调查了在日本冬季精灵活动中观察到的38个柱状精灵事件。通过分析雪碧图像、瞬变舒曼共振波形和JLDN/LPATS雷电探测网络系统的数据，发现每次雪碧事件中的柱数与正向云地闪电放电（+CG）的峰值电流强度成正比，而柱的平均垂直长度与正向云地闪电放电的电荷矩成正比。基于这些结果，我们认为，电磁脉冲（EMP）辐射+CG有助于形成种子的精灵流光，而QE场有助于发展的流光从种子。
In order to elucidate the electrodynamic coupling process between sprites and their causative cloud‐to‐ground lightning discharges, we investigated 38 columniform sprite events observed in the wintertime sprite campaigns in Japan. By analyzing the data of sprite images, transient Schumann resonance waveforms and the JLDN/LPATS lightning detection network systems, we found that the number of columns in each sprite event was proportional to the peak current intensity of positive cloud‐to‐ground lightning discharges (+CGs) while the average vertical length of columns was proportional to the charge moment of the causative +CGs. Based on these results, we suggest that electromagnetic pulses (EMPs) radiated from +CGs contribute to the formation of seeds for sprite streamers while the QE field contribute to the development of the streamers from the seeds.