Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL090793 |
Variability of the Solar Wind Flow Asymmetry in the Martian Magnetosheath observed by MAVEN | |
N. Romanelli; G. DiBraccio; J. Halekas; E. Dubinin; J. Gruesbeck; J. Espley; G. Poh; Y. Ma; J. G. Luhmann | |
2020-11-16 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2020 |
英文摘要 | We perform the first statistical analysis of effects that different external conditions have on a solar wind (SW) flow asymmetry observed in the Martian magnetosheath due to mass loading, making use of ⁓ 5 years of Mars Atmosphere and Volatile EvolutioN (MAVEN) observations. We find the difference between the mean magnetosheath SW velocity component along the SW convective electric field direction in regions in the positive and negative hemispheres displays a strong linear correlation with the ratio between the upstream Interplanetary Magnetic Field (IMF) cross‐flow component (By) and the SW proton density (nsw). The asymmetry is maximized (⁓ 25‐35 km s‐1) for low nsw (⁓ 1 cm‐3) and large IMF By (⁓ 2 nT). These results suggest the SW flow asymmetry variability is due to a force arising from the differential streaming between SW protons and oxygen ions, with boundary conditions partly defined by the pristine SW properties. |
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/304341 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | N. Romanelli,G. DiBraccio,J. Halekas,et al. Variability of the Solar Wind Flow Asymmetry in the Martian Magnetosheath observed by MAVEN[J]. Geophysical Research Letters,2020. |
APA | N. Romanelli.,G. DiBraccio.,J. Halekas.,E. Dubinin.,J. Gruesbeck.,...&J. G. Luhmann.(2020).Variability of the Solar Wind Flow Asymmetry in the Martian Magnetosheath observed by MAVEN.Geophysical Research Letters. |
MLA | N. Romanelli,et al."Variability of the Solar Wind Flow Asymmetry in the Martian Magnetosheath observed by MAVEN".Geophysical Research Letters (2020). |
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