Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL093065 |
Multiscale nature of the magnetotail reconnection onset | |
M. I. Sitnov; T. Motoba; M. Swisdak | |
2021-05-11 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Mining of substorm magnetic field data reveals the formation of two X‐lines preceded by the flux accumulation at the tailward end of a thin current sheet (TCS). 3D PIC simulations guided by these pre‐onset reconnection features are performed, taking also into account weak external driving, negative charging of TCS and domination of electrons as current carriers. Simulations reveal an interesting multiscale picture. On the global scale they show the formation of two X‐lines, with stronger magnetic field variations and inhomogeneous electric fields found closer to Earth. The X‐line appearance is preceded by the formation of two diverging electron outflow regions embedded into a single diverging ion outflow pattern and transforming into faster electron‐scale reconnection jets after the onset. Distributions of the agyrotropy parameters suggest that reconnection is provided by ion and then electron demagnetization. The bulk flow and agyrotropy distributions are consistent with MMS observations. |
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/326734 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | M. I. Sitnov,T. Motoba,M. Swisdak. Multiscale nature of the magnetotail reconnection onset[J]. Geophysical Research Letters,2021. |
APA | M. I. Sitnov,T. Motoba,&M. Swisdak.(2021).Multiscale nature of the magnetotail reconnection onset.Geophysical Research Letters. |
MLA | M. I. Sitnov,et al."Multiscale nature of the magnetotail reconnection onset".Geophysical Research Letters (2021). |
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