Observation of thunderstorm-induced muon events in GRAPES-3 experiment

IF 1.8 4区地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS

Journal of Atmospheric and Solar-Terrestrial Physics Pub Date : 2024-04-04 DOI:10.1016/j.jastp.2024.106231

Pranaba K. Nayak , M. Chakraborty , S.R. Dugad , S.K. Gupta , B. Hariharan , P. Jagadeesan , A. Jain , Pravata K. Mohanty , D. Pattanaik , M. Rameez , K. Ramesh , L.V. Reddy , M. Zuberi , Y. Hayashi , S. Kawakami , H. Kojima , A. Oshima , S. Shibata , Y. Muraki , T. Nonaka

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引用次数: 0

Abstract

The GRAPES-3 tracking muon telescope located at Ooty (India) records short-term variations in the muon intensity during major thunderstorms, termed thunderstorm-induced muon events (TIMEs). Its excellent angular resolution, coupled with high statistics, allows us to observe subtle directional variations in muon rate. We detected 169 statistically significant events during the five-year period from 2006 through 2010. The monthly and seasonal variation patterns of the observed TIMEs were discussed, emphasizing their occurrence and climatological aspects. The annual diurnal pattern was plotted with the Carnegie curve, considering their possible causal link with the global electric circuit. The work represents the first report from any experiment for such an extended period in an uninterrupted manner.

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在 GRAPES-3 试验中观测雷暴诱发的μ介子事件

位于印度奥蒂（Ooty）的 GRAPES-3 跟踪μ介子望远镜记录了大雷暴期间μ介子强度的短期变化，称为雷暴诱发μ介子事件（TIME）。其出色的角度分辨率和高统计量使我们能够观测到μ介子率的微妙方向变化。从 2006 年到 2010 年的五年间，我们共探测到 169 个具有统计意义的事件。我们讨论了观测到的 TIMEs 的月度和季节变化规律，强调了它们的发生和气候学方面。考虑到其与全球电路可能存在的因果关系，还绘制了卡内基曲线年昼夜模式图。这项工作是首次以不间断的方式进行如此长时间的实验报告。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Atmospheric and Solar-Terrestrial Physics 地学-地球化学与地球物理

CiteScore

4.10

自引率

5.30%

发文量

审稿时长

6 months

期刊介绍： The Journal of Atmospheric and Solar-Terrestrial Physics (JASTP) is an international journal concerned with the inter-disciplinary science of the Earth''s atmospheric and space environment, especially the highly varied and highly variable physical phenomena that occur in this natural laboratory and the processes that couple them. The journal covers the physical processes operating in the troposphere, stratosphere, mesosphere, thermosphere, ionosphere, magnetosphere, the Sun, interplanetary medium, and heliosphere. Phenomena occurring in other "spheres", solar influences on climate, and supporting laboratory measurements are also considered. The journal deals especially with the coupling between the different regions. Solar flares, coronal mass ejections, and other energetic events on the Sun create interesting and important perturbations in the near-Earth space environment. The physics of such "space weather" is central to the Journal of Atmospheric and Solar-Terrestrial Physics and the journal welcomes papers that lead in the direction of a predictive understanding of the coupled system. Regarding the upper atmosphere, the subjects of aeronomy, geomagnetism and geoelectricity, auroral phenomena, radio wave propagation, and plasma instabilities, are examples within the broad field of solar-terrestrial physics which emphasise the energy exchange between the solar wind, the magnetospheric and ionospheric plasmas, and the neutral gas. In the lower atmosphere, topics covered range from mesoscale to global scale dynamics, to atmospheric electricity, lightning and its effects, and to anthropogenic changes.