Long-delayed bright dancing sprite with large Horizontal displacement from its parent flash
Long-delayed bright dancing sprite with large Horizontal displacement from its parent flash
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长时间延迟的明亮舞蹈精灵与其父闪光灯具有较大的水平位移
DOI：
10.1016/j.jastp.2015.04.001
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发表时间：
2015-07
影响因子：
1.9
通讯作者：
Feng Guili
中科院分区：
文献类型：
--
作者：
Yang Jing;Lu Gaopeng;Lee Li-Jou;Feng Guili
我们在这篇论文中报告了一个非常明亮的长期延迟舞蹈精灵与明显的水平位移，从它的父母中风的观察。跳舞的精灵只持续了60毫秒，形态包括三个字段，前两个字段中有两个细长的昏暗精灵元素，第三个字段中有一个非常明亮的大元素，与其他观察不同，跳舞的精灵通常在更长的时间间隔内包含多个元素，视频字段中的精灵形状和亮度通常与前面的字段相似。明亮的雪碧位移至少38公里，从其母云到地面（CG）中风，并发生在相对较高的云顶区域。这种紧凑的舞蹈精灵的母闪是正极性的，只有一个回击（约+24 kA）和明显的持续电流过程，和中风的电荷矩变化很小（勉强高于精灵生产的阈值）。所有子画面元素都发生在持续电流阶段，并且明亮的长延迟子画面元素引起相当大的电流脉冲。这个精灵的舞蹈功能可能与电荷结构，动力学和微观物理的母风暴，和推断的母CG闪光的发展是一致的，与以前的甚高频（VHF）观测闪电在同一地区。
We reported in this paper the observation of a very bright long-delayed dancing sprite with distinct horizontal displacement from its parent stroke. The dancing sprite lasted only 60 ms, and the morphology consisted of three fields with two slim dim sprite elements in the first two fields and a very bright large element in the third field, different from other observations where the dancing sprites usually contained multiple elements over a longer time interval, and the sprite shape and brightness in the video field are often similar to the previous fields. The bright sprite was displaced at least 38 km from its parent cloud-to-ground (CG) stroke and occurred over comparatively higher cloud top region. The parent flash of this compact dancing sprite was of positive polarity, with only one return stroke (approximately +24 kA) and obvious continuing current process, and the charge moment change of stroke was small (barely above the threshold for sprite production). All the sprite elements occurred during the continuing current stage, and the bright long-delayed sprite element induced a considerable current pulse. The dancing feature of this sprite may be linked to the electrical charge structure, dynamics and microphysics of parent storm, and the inferred development of parent CG flash was consistent with previous very high-frequency (VHF) observations of lightning in the same region.
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影响因子：
--
作者：
S. F. Hardman;R. Dowden;J. Brundell;J. L. Bahr;Z. Kawasaki;C. Rodger
通讯作者：
S. F. Hardman;R. Dowden;J. Brundell;J. L. Bahr;Z. Kawasaki;C. Rodger
影响因子：
5.2
作者：
V. Pasko;U. Inan;T. Bell;S. Reising
通讯作者：
V. Pasko;U. Inan;T. Bell;S. Reising
影响因子：
1
作者：
Dx Liu;X. Qie;Zc Wang;Xk Wu;Lx Pan
通讯作者：
Dx Liu;X. Qie;Zc Wang;Xk Wu;Lx Pan
影响因子：
4.4
作者：
Carey, LD;Murphy, MJ;Demetriades, NWS
通讯作者：
Demetriades, NWS
影响因子：
5.2
作者：
S. Cummer;U. Inan;T. Bell;Christopher Barrington-Leigh
通讯作者：
S. Cummer;U. Inan;T. Bell;Christopher Barrington-Leigh