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DOI | 10.1029/2021GL093543 |
Manifestations of Magnetotail Flow Channels in Energetic Particle Signatures at Low-Altitude Orbit | |
V.A. Sergeev; Weiqin Sun; Jian Yang; E.V. Panov | |
2021-07-21 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | Although magnetotail bursty bulk flows (BBFs)/plasma bubbles are widely recognized as major plasma transport structures that provide particle acceleration and injection, their ionospheric signatures in energetic particles have not been established. In this study, we combine the ionospheric energetic proton flux (as a proxy to the equatorial pressure) and energetic electron loss cone filling rate (as a marker of the equatorial magnetic field) to detect a rapid traversal from stretched to dipolarized field lines across the BBF channel. During a non-substorm episode when multiple flow bursts were observed in the plasma sheet, we show remarkable step-like increases of energetic proton flux (approaching 103 in some events) observed in the middle of nightside auroral zone. We also conduct a high-resolution Rice Convection Model (RCM) simulation of a plasma-sheet bubble intrusion into the inner magnetosphere. Besides confirmation of the observed signatures, the simulation illustrates variability of the ionospheric signatures of bubbles and provides guidance in future studies of flow burst interactions. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/334086 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | V.A. Sergeev,Weiqin Sun,Jian Yang,et al. Manifestations of Magnetotail Flow Channels in Energetic Particle Signatures at Low-Altitude Orbit[J]. Geophysical Research Letters,2021. |
APA | V.A. Sergeev,Weiqin Sun,Jian Yang,&E.V. Panov.(2021).Manifestations of Magnetotail Flow Channels in Energetic Particle Signatures at Low-Altitude Orbit.Geophysical Research Letters. |
MLA | V.A. Sergeev,et al."Manifestations of Magnetotail Flow Channels in Energetic Particle Signatures at Low-Altitude Orbit".Geophysical Research Letters (2021). |
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