Sprites as Luminous Columns of Ionization Produced by Quasi-Electrostatic Thundercloud Fields
Sprites as Luminous Columns of Ionization Produced by Quasi-Electrostatic Thundercloud Fields
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准静电雷云场产生的作为电离发光柱的精灵
DOI：
10.1029/96gl00473
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发表时间：
1996
影响因子：
5.2
通讯作者：
T. Bell
中科院分区：
文献类型：
--
作者：
V. Pasko;U. Inan;T. Bell
雷电放电后，雷暴云上方存在的准静电场可以形成典型的横向尺寸为∼5-10公里的柱状击穿电离通道和胡萝卜状垂直发光结构，其高度跨度从∼80公里到∼50公里。胡萝卜状的形状与在精灵中观察到的非常相似。结果表明，相对于引起闪电的放电，光学发射的出现在时间上(∼1-20ms)有明显的延迟。
Quasi-electrostatic (QE) fields which exist above thunderclouds after lightning discharges can lead to the formation of columnar channels of breakdown ionization and carrot-like vertical luminous structures with typical transverse dimension ∼5–10 km spaning an altitude range from ∼80 km to well below ∼50 km. The carrot-like forms closely resemble those observed in sprites. Results indicate that the appearance of optical emissions can be significantly delayed in time (∼1–20 ms) with respect to the causative lightning discharge.