GSTDTAP  > 气候变化
DOI10.1029/2020GL090793
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
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
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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
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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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