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Termination of thunderstorm-related bursts of energetic radiation and particles by inverted intracloud and hybrid lightning discharges

机译：逆云内和混合闪电放电终止与雷暴有关的高能辐射和粒子爆发

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摘要

Recent studies of thunderstorm-related enhancements of fluxes of energetic radiation and particles at ground level suggest that removal of mid-level negative charge from the cloud by negative cloud-to-ground (-CG) lightning flashes or normal intracloud (IC) flashes serves to abruptly terminate those enhancements. However, it was not clear if the electron-accelerating electric field responsible for flux enhancements at ground was primarily between the main negative charge region and ground (produced due to the dominant effect of negative cloud charge) or between the mid-level negative and lower positive charge regions inside the thundercloud. Here, we report that these flux enhancements can be also abruptly terminated by inverted intracloud flashes and hybrid lightning flashes (inverted IC followed by negative CG). Based on the analysis of 13 events of these two types, we provide first evidence that the electric field between the mid-level negative and lower positive charge regions in the thundercloud can be responsible for the flux enhancements at ground level.
机译：与雷暴有关的高能辐射和粒子在地面水平通量的增强的最新研究表明，通过负云对地（-CG）闪电或正常云内（IC）闪光灯从云中去除中等水平的负电荷可以突然终止这些增强功能。然而，尚不清楚引起地面通量增强的电子加速电场主要是在主要的负电荷区域和地面之间（由于负云电荷的主导作用而产生）还是在中等水平的负电荷和较低电荷之间雷云内部的正电荷区域。在这里，我们报告说，这些通量增强也可以通过反向云内闪烁和混合闪电（终止为IC，然后为负CG）突然终止。基于对这两种类型的13个事件的分析，我们提供了第一个证据，即雷云中中层负电荷区和下层正电荷区之间的电场可能是导致地面通量增强的原因。

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  • 来源
    《Atmospheric research》 |2020年第3期|104713.1-104713.7|共7页
  • 作者

  • 作者单位

    Yerevan Phys Inst Yerevan Armenia|Moscow Engn Phys Inst Natl Res Nucl Univ MEPhI Moscow Russia|RAS Space Res Inst Moscow Russia;

    Yerevan Phys Inst Yerevan Armenia;

    Univ Florida Dept Elect & Comp Engn Gainesville FL USA|Natl Res Univ Higher Sch Econ Moscow Inst Elect & Math Moscow Russia;

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  • 正文语种 eng
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  • 关键词

    Lightning type; Thundercloud; Electron acceleration; Energetic radiation; Cloud charge structure; Electric field;

    机译：闪电类型;雷云;电子加速度;高能辐射;云收费结构;电场;

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