澳门科学卫星 1 号关于雷电引起的电子沉淀的首次观测结果

IF 6 2区 地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY Science China Earth Sciences Pub Date : 2024-09-12 DOI:10.1007/s11430-024-1411-x
Yongping Wang, Yixin Sun, Qiugang Zong, Gaopeng Lu, Xudong Gu, Ze-Jun Hu, Bin Li
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引用次数: 0

摘要

中能电子探测器(MEED)是澳门科学卫星 1 号(MSS-1)上的一个星载仪器,专门用于监测卫星轨道上典型的带电粒子辐射特征及其发生和发展过程,包括短脉冲闪电诱导电子沉淀(LEP)。本文介绍了 MSS-1 进行 LEP 测量的首批结果。在卫星发射后 3 个月的例行运行中,确定了 47 个 LEP 事件,所有事件都在 1.5<L<3.0(其中 L 代表 McIlwain L 参数)范围内,并对这些 LEP 事件的雷电放电成因进行了明确的地理定位。LEP 事件发生在起因闪电的 <1 秒内,由 40-300 千伏电子组成。初步观测结果表明,利用中能电子探测器,MSS-1 可以对大面积的增强背景降水进行现场观测,并揭示其精细的时空特征和光谱特征。在南极长城站进行的 VLF 地面合作测量与 MSS-1 的 LEP 测量也有很好的对应关系。观测结果还表明,闪电活动对高能电子能量空间结构具有调制作用。
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First observation results of Macao Science Satellite 1 on lightning-induced electron precipitation

The mid-energy electron detector (MEED) is a space-borne instrument onboard Macao Science Satellite 1 (MSS-1) dedicated to monitoring the typical charged particle radiation characteristics in the satellite orbit and the process of their occurrence and development, including short bursts of lightning-induced electron precipitation (LEP). This paper presents the first results of the LEP measurements by the MSS-1. 47 LEP events are identified with the routine operation for 3 months since satellite launch, all within the range of 1.5<L<3.0 (where L represents the McIlwain L-parameter), and the causative lightning discharges are definitively geo-located for these LEP events. The LEP events occur within <1 s of the causative lightning and consist of 40–300 keV electrons. A preliminary observation result indicates that, with medium-energy electron detectors, MSS-1 can present in-situ observations of large regions of enhanced background precipitation and reveal their fine spatiotemporal characteristics and spectral signatures. The collaborative VLF ground-based measurements at the Great Wall Station, Antarctica also have a good correspondence with LEP measurements of MSS-1. The observations also imply that lightning activity has a modulation effect on the energetic electron energy-spatial structure.

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来源期刊
Science China Earth Sciences
Science China Earth Sciences GEOSCIENCES, MULTIDISCIPLINARY-
CiteScore
9.60
自引率
5.30%
发文量
135
审稿时长
3-8 weeks
期刊介绍: Science China Earth Sciences, an academic journal cosponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China, and published by Science China Press, is committed to publishing high-quality, original results in both basic and applied research.
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