Gamma Ray Flashes Produced by Lightning Observed at Ground Level by TETRA‐II
Gamma Ray Flashes Produced by Lightning Observed at Ground Level by TETRA‐II
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TETRA-II 在地面观测到闪电产生的伽马射线闪光
DOI：
10.1029/2019ja026820
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Xavier Univ. of New Orleans
中科院分区：
文献类型：
--
作者：
D. Pleshinger;S. Alnussirat;J. Arias;S. Bai;Y. Banadaki;M. Cherry;J. Hoffman;E. Khosravi;M. Legault;R. Rodriguez;D. Smith;E. D. Toro;J. Trepanier;A. S. O. PhysicsAstronomy;Centro Nacional de Metrologi'a de Panam'a;S. Univ;Univ. of Puerto Rico at Bayam'on;Univ. of Puerto Rico at Utuado;Louisiana State Univ. Dept. of GeographyAnthropology;Xavier Univ. of New Orleans
在运行的头两年，地面伽玛射线闪光和高能雷暴屋顶阵列（TETRA）-II伽玛射线探测器阵列记录了22次与闪电相关的毫秒级持续时间的伽玛射线爆发。在这项研究中，我们提出了在路易斯安那州，波多黎各和巴拿马的三个TETRA-II地面站点检测到的TETRA-II观测结果，以及来自闪电数据集VAISALA全球闪电数据集，VAISALA国家闪电检测网络，地球网络总闪电网络和全球闪电定位网络的同步射频信号。伽玛射线事件和闪电活动之间的相对时间是理解爆发产生机制的关键参数。伽马射线时间剖面及其与射电天电的相关性表明，伽马射线事件是由闪电先导活动发起的，并在闪电回击前的闪电先导通道发展的最后阶段附近产生。
In its first 2 years of operation, the ground‐based Terrestrial gamma ray flash and Energetic Thunderstorm Rooftop Array (TETRA)‐II array of gamma ray detectors has recorded 22 bursts of gamma rays of millisecond‐scale duration associated with lightning. In this study, we present the TETRA‐II observations detected at the three TETRA‐II ground‐level sites in Louisiana, Puerto Rico, and Panama together with the simultaneous radio frequency signals from the lightning data sets VAISALA Global Lightning Dataset, VAISALA National Lightning Detection Network, Earth Networks Total Lightning Network, and World Wide Lightning Location Network. The relative timing between the gamma ray events and the lightning activity is a key parameter for understanding the production mechanism(s) of the bursts. The gamma ray time profiles and their correlation with radio sferics suggest that the gamma ray events are initiated by lightning leader activity and are produced near the last stage of lightning leader channel development prior to the lightning return stroke.
影响因子：
4.4
作者：
Abbasi, R. U.;Abu-Zayyad, T.;Zundel, Z.
通讯作者：
Zundel, Z.