Observed one‐dimensional return stroke propagation speeds in the bottom 170 m of a rocket‐triggered lightning channel
Observed one‐dimensional return stroke propagation speeds in the bottom 170 m of a rocket‐triggered lightning channel
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DOI：
10.1029/2004gl020187
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发表时间：
2004-08
影响因子：
5.2
通讯作者：
R. C. Olsen;D. Jordan;V. Rakov;M. Uman;N. Grimes
中科院分区：
文献类型：
--
作者：
R. C. Olsen;D. Jordan;V. Rakov;M. Uman;N. Grimes
使用垂直光电二极管阵列，以2 ns的采样间隔测量了七次触发闪电的五次回击传播速度。各种方法来确定要跟踪的参考点进行了探讨，速度被认为是不同的近一个数量级，这取决于选择的方法。速度一般与文献中的值一致。在所检查的五种中风中，有四种中风的回击速度似乎随高度增加，然后随高度减少。
The return‐stroke propagation speeds of five strokes from a seven‐stroke triggered lightning flash are measured, with a 2 ns sampling interval, using a vertical array of photodiodes. Various methods for determining the reference point to be tracked are explored, and the speed is seen to vary over nearly an order of magnitude depending upon which method is chosen. The speeds are generally in agreement with the values found in the literature. The return‐stroke speed appears to increase with height and then decrease with height in four of the five strokes examined.