DOI: 10.1029/2018JA025199
Scopus记录号: 2-s2.0-85046540118
论文题名: Formation of the Dayside Magnetopause and Its Boundary Layers Under the Radial IMF
作者: Pi G. ; Němeček Z. ; Šafránková J. ; Grygorov K. ; Shue J.-H.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期: 5 起始页码: 3533
结束页码: 3547
语种: 英语
英文关键词: LLBL
; radial IMF
英文摘要: The global structure of magnetopause boundary layers under the radial interplanetary magnetic field (IMF) conditions is studied by a comparison of experimental and simulation results. In magnetohydrodynamic simulations, the hemispherical asymmetry of the reconnection locations was found. The draped field adjacent to the magnetopause points northward in the Northern Hemisphere, but it is oriented southward in the Southern Hemisphere at the beginning of the simulation for negative IMF Bx. The magnetopause region affected by the positive IMF Bz component enlarges over time, and the density profile exhibit a north-south asymmetry near the magnetopause. The experimental part of the study uses the Time History of Events and Macroscale Interactions during Substorm data. We analyze profiles of the plasma parameters and magnetic field as well as the ion pitch-angle distributions. The nonsimultaneous appearance of parallel and antiparallel aligned flows suggests two spatially separated sources of these flows. We have identified (1) the inner part of the low-latitude boundary layer (LLBL) on closed magnetic field lines; (2) the outer LLBL on open field lines; (3) the inner part of the magnetosheath boundary layer (MSBL) formed by dayside reconnection in the Southern Hemisphere; and (4) the outer MSBL resulting from lobe reconnection in the Northern Hemisphere. ©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/113926
Appears in Collections: 气候减缓与适应
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作者单位: Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic; Institute of Space Science, National Central University, Taoyuan, Taiwan
Recommended Citation:
Pi G.,Němeček Z.,Šafránková J.,et al. Formation of the Dayside Magnetopause and Its Boundary Layers Under the Radial IMF[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(5)