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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Relationship Between Sprite Current and Morphology
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Relationship Between Sprite Current and Morphology

机译：雪碧当前和形态学之间的关系

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On June 2 and 3, 2019, 63 sprites were captured from Langmuir Laboratory in central New Mexico. The two storms investigated were located in northwest Texas, 400–800 km away from the observation site. Optical recordings were made with a Phantom V2010 camera operating at up to 100,000 frames per second. Electromagnetic remote sensing of lightning and sprite electric fields was performed with a sensitive slow antenna (LEFA). Data from the Earth Networks Total Lightning Network (ENTLN) were used to locate the sprite parent flashes. The combined information of these three data sets reveals that a staggering fraction of more than half of the sprites observed have a distinguishable electromagnetic signature attributed to currents flowing within the sprite body. Furthermore, these sprite current signatures were unusually large in comparison to previous reports. The sprite electric field changes have roughly half the amplitude of their parent lightning flash's, corresponding to sprite peak currents of 26–58 kA on average. The largest sprites have current moments of up to 2,700 kA km, as inferred from a computationally efficient method to solve Maxwell's equations. Detailed comparison between the sprites' electromagnetic signatures and high-speed optical recordings show that optically large sprites containing upward streamers (carrots and jellyfish) tend to have larger electrical currents than the ones displaying only downward streamer development (column sprites). Finally, a clear increasing trend in peak current moment is evident with increasing morphological complexity, from columns to carrots to jellyfish sprites.
机译：2019年6月2和3,63精灵被捕获从朗缪尔实验室在新墨西哥州中部。位于两场风暴调查德克萨斯州西北部,距离400 - 800公里观测站点。与幻V2010相机操作100000帧每秒。传感闪电,雪碧电场执行了一个敏感的缓慢的天线吗(LEFA)。闪电网络(ENTLN)是用来定位的雪碧父闪光。这三个数据集显示惊人的分数的一半以上精灵观察到有一个区分电磁信号电流精灵的身体中流动。这些精灵当前签名是不同寻常的大相比以前的报告。雪碧电场变化大约一半父母的振幅闪电,对应于雪碧26-58 kA的峰值电流平均。2700 kA公里的时候,从一个推断计算有效解决方法麦克斯韦方程。精灵的电磁签名和高速光学记录表明,光大精灵包含向上的飘带(胡萝卜和水母)往往更大比那些只显示电流向下拖缆开发(列精灵)。最后,在峰值电流明显增加的趋势时刻与形态增加明显复杂性,从列到胡萝卜水母精灵。

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