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Energetic electron precipitation during lightning activities over Indian landmass as observed from WWLLN and NOAA-15 satellite
Advances in Space Research ( IF 2.6 ) Pub Date : 2021-08-16 , DOI: 10.1016/j.asr.2021.08.008
Swati Chowdhury 1 , Sudipta Sasmal 1 , James Brundell 2 , Suman Chakraborty 3 , Ayan Bhattacharjee 4 , Sandip K. Chakrabarti 1
Affiliation  

Lightning is a sudden release of electrostatic energy that plays a significant role in the ionospheric-magnetospheric coupling process. A short-term increase in the particle count rates (CR) in the Van Allen Radiation Belt (VAB) is known as the particle bursts. Due to lightning events, the increase in the number of high-energy particles in the inner region of the VAB (L < 2) is a fascinating research to implement. This paper tries to determine the number of lightning-induced particles, which can successfully establish a connection between the two regions of the atmosphere (the ionosphere and the magnetosphere). Lightning-generated electromagnetic radiation propagates through the Earth Ionosphere Waveguide (EIWG), where some energy leaks through and scatters particles in the radiation belt. By lowering the pitch angle, some particles precipitate into the ionosphere and cause secondary ionization. This excess particle count caused by lightning strokes is detected using data from the NOAA-15 satellite and data from the World Wide Lightning Location Network (WWLLN) is used to verify the relationship between lightning stroke and particle count. In this paper, we process our work by using lightning locations over a specific region of India and the geographic/geomagnetic conjugate locations. The monthly variation shows a high correlation between the lightning stroke number and the particle counts within the conjugate geomagnetic location, while the correlation with the particle counts within the conjugate geographic location is significantly lower. In the second half of the paper, we use an automated energy filtration method, for the computation of the particle counts induced by maximum energetic lightning (having lightning energy value >104 J and the particle counts induced by minimum energetic lightning (having lightning energy value <104 J). The results of this analysis demonstrate that the variation of PCs in the conjugate geomagnetic location is more closely related to the maximum energetic lightning variation than the lowest energetic lighting variation. This paper will demonstrate the coupling process between the ionosphere and the magnetosphere based on counting the particles produced by lightning.



中文翻译:

从 WWLLN 和 NOAA-15 卫星观测到的印度陆地闪电活动期间的高能电子降水

闪电是静电能量的突然释放,在电离层-磁层耦合过程中起着重要作用。范艾伦辐射带 (VAB) 中粒子计数率 (CR) 的短期增加称为粒子爆发。由于闪电事件,VAB内部区域的高能粒子数量增加(L<2)是一项引人入胜的研究。本文试图确定雷击诱发粒子的数量,从而成功地在大气的两个区域(电离层和磁层)之间建立联系。闪电产生的电磁辐射通过地球电离层波导 (EIWG) 传播,其中一些能量泄漏并散射辐射带中的粒子。通过降低俯仰角,一些粒子会沉淀到电离层中并引起二次电离。使用来自 NOAA-15 卫星的数据检测到这种由雷击引起的过量粒子数,并使用来自全球闪电定位网络 (WWLLN) 的数据来验证雷击和粒子数之间的关系。在本文中,我们通过使用印度特定地区的闪电位置和地理/地磁共轭位置来处理我们的工作。月变化表明共轭地磁位置内雷击数与粒子数的相关性较高,而与共轭地磁位置内粒子数的相关性显着较低。在论文的后半部分,我们使用自动能量过滤方法,计算由最大能量闪电(具有闪电能量值)引起的粒子计数 而与共轭地理位置内粒子数的相关性则显着降低。在论文的后半部分,我们使用自动能量过滤方法,计算由最大能量闪电(具有闪电能量值)引起的粒子计数 而与共轭地理位置内粒子数的相关性则显着降低。在论文的后半部分,我们使用自动能量过滤方法,计算由最大能量闪电(具有闪电能量值)引起的粒子计数>10 4 J 和最小高能闪电感应的粒子数(具有闪电能量值<10 4焦)。该分析的结果表明,共轭地磁位置 PC 的变化与最大能量闪电变化的关系比最低能量闪电变化更密切。本文将通过对闪电产生的粒子进行计数来论证电离层和磁层之间的耦合过程。

更新日期:2021-10-09
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