Dawn-dusk Asymmetry Distribution of Kelvin-Helmholtz Instability at the Magnetopause of the Mid-magnetotail

地球磁层顶频发的开尔文–赫姆霍兹(Kelvin-Helmholtz, K-H)不稳定性在太阳风的物质和能量向地球磁层的输运过程中发挥着重要的作用. 研究筛选出2015-2020年中磁尾区域(<i>X</i>≈–60 <i>R</i><sub>e</sub>)的磁层顶穿越事件, 结合51个中磁尾处的K-H不稳定性事件, 统计研究了K-H不稳定性在中磁尾磁层顶的晨昏不对称性分布. 结果表明, 在中磁尾区域, 磁层顶晨侧的K-H不稳定性发生率较高. 在行星际磁场(Interplanetary Magnetic Field, IMF)北向条件下, 发生在磁层顶晨侧的K-H不稳定性事件数量明显超越昏侧; 当帕克–螺旋(Parker-Spiral, PS)IMF主导时, 昏侧K-H不稳定性事件更多. 太阳风的不同参数也会显著影响中磁尾区域磁层顶晨昏两侧的K-H涡旋分布. 磁尾区域的K-H波动也是导致磁尾等离子体片中不同温度的等离子体分布不对称的原因之一.

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Publication Details

Journal
Chinese Journal of Space Science
Published
2025-01-01
DOI
https://doi.org/10.11728/cjss2025.03.2024-0038
Primary Topic
Ionosphere and magnetosphere dynamics
Type
article
Field-Weighted Citation Impact
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article

Dawn-dusk Asymmetry Distribution of Kelvin-Helmholtz Instability at the Magnetopause of the Mid-magnetotail

J. Y. Lu, Ming Wang, Yue Zhou, Jianxiong Feng et al.
Chinese Journal of Space Science
Ionosphere and magnetosphere dynamics
article

Dawn-dusk Asymmetry Distribution of Kelvin-Helmholtz Instability at the Magnetopause of the Mid-magnetotail

J. Y. Lu, Ming Wang, Yue Zhou, Jianxiong Feng, He Zhang
article en

Abstract

地球磁层顶频发的开尔文–赫姆霍兹(Kelvin-Helmholtz, K-H)不稳定性在太阳风的物质和能量向地球磁层的输运过程中发挥着重要的作用. 研究筛选出2015-2020年中磁尾区域(<i>X</i>≈–60 <i>R</i><sub>e</sub>)的磁层顶穿越事件, 结合51个中磁尾处的K-H不稳定性事件, 统计研究了K-H不稳定性在中磁尾磁层顶的晨昏不对称性分布. 结果表明, 在中磁尾区域, 磁层顶晨侧的K-H不稳定性发生率较高. 在行星际磁场(Interplanetary Magnetic Field, IMF)北向条件下, 发生在磁层顶晨侧的K-H不稳定性事件数量明显超越昏侧; 当帕克–螺旋(Parker-Spiral, PS)IMF主导时, 昏侧K-H不稳定性事件更多. 太阳风的不同参数也会显著影响中磁尾区域磁层顶晨昏两侧的K-H涡旋分布. 磁尾区域的K-H波动也是导致磁尾等离子体片中不同温度的等离子体分布不对称的原因之一.

Chinese Journal of Space ScienceVol. 45(3)
Climate action
Openalex Percentile: Top 92%
Ionosphere and magnetosphere dynamics
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