DOI: 10.1002/2018JA025202
Scopus记录号: 2-s2.0-85047529889
论文题名: The Structure of Martian Magnetosphere at the Dayside Terminator Region as Observed on MAVEN Spacecraft
作者: Vaisberg O.L. ; Ermakov V.N. ; Shuvalov S.D. ; Zelenyi L.M. ; Halekas J. ; DiBraccio G.A. ; McFadden J. ; Dubinin E.M.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期: 4 起始页码: 2679
结束页码: 2695
语种: 英语
英文关键词: magnetosphere
; Mars
; planetary ions
; solar wind
英文摘要: We analyzed 44 passes of the Mars Atmosphere and Volatile EvolutioN mission (MAVEN) spacecraft through the magnetosphere, arranged by the angle between electric field vector and the projection of spacecraft position radius vector in the plane perpendicular to the Mars-Sun line (θE). All passes were divided into three angular sectors near 0°, 90°, and 180° θE angles in order to estimate the role of the interplanetary magnetic field direction in plasma and magnetic properties of dayside Martian magnetosphere. The time interval chosen was from 17 January to 4 February 2016 when MAVEN was crossing the dayside magnetosphere at solar zenith angle ~70°. Magnetosphere as the region with prevailing energetic planetary ions is always found between the magnetosheath and the ionosphere. The analysis of dayside interaction region showed that for each angular sector with different orientation of the solar wind electric field vector E = −1/c V × B one can find specific profiles of the magnetosheath, the magnetic barrier (Michel, 1971, https://doi.org/10.1029/RG009i002p00427; Zhang et al., 1991, https://doi.org/10.1029/91JA00088), and the magnetosphere. Magnetic barrier forms in front of the magnetosphere, and relative magnetic field magnitudes in these two domains vary. The average height of the boundary with ionosphere is ~530 km, and the average height of the magnetopause is ~730 km. We discuss the implications of the observed magnetosphere structure to the planetary ions loss mechanism. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114160
Appears in Collections: 气候减缓与适应
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作者单位: Space Research Institute, Russian Academy of Sciences, Moscow, Russian Federation; National Research Nuclear University MEPhI, Moscow, Russian Federation; Department of Physics and Astronomy, University of Iowa, Iowa City, IA, United States; NASA Goddard Space Flight Center, Greenbelt, MD, United States; Space Sciences Laboratory, University of California, Berkeley, CA, United States; Max Planck Institute for Solar System Research, Gottingen, Germany
Recommended Citation:
Vaisberg O.L.,Ermakov V.N.,Shuvalov S.D.,et al. The Structure of Martian Magnetosphere at the Dayside Terminator Region as Observed on MAVEN Spacecraft[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(4)