Analysis of temperature versus density plots and their relation to the LLBL formation under southward and northward IMF orientations

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題名:	Analysis of temperature versus density plots and their relation to the LLBL formation under southward and northward IMF orientations
作者:	許志浤;Němeček, Z.;Šafránková, J.;Kruparova, O.;Přech, L.;Jelínek, K.;Dušík, Š.;Šimůnek, J.;Grygorov, K.;Shue, J.-H.
貢獻者:	地球科學學院太空科學與工程學系
關鍵詞:	Boundary layer;Boundary layers;Density;Formations;IMF orientation;Interplanetary magnetic fields;low-latitude boundary layer;Magnetic fields;Magnetopause;Magnetosheath;Orientation;reconnection;Temperature
日期:	2015-05-01
上傳時間:	2026-04-23 11:03:14 (UTC+8)
出版者:	Wiley-Blackwell;Washington: Blackwell Publishing Ltd
摘要:	摘要： The paper reports a clear dependence of a basic structure of two sublayers of the low‐latitude boundary layer (LLBL) on northward and southward interplanetary magnetic field (IMF) orientations. Regardless of different processes responsible for a formation and evolution of the entire LLBL, the outer part of the LLBL is significantly influenced by the sign of the IMF BZ component. Under northward IMF conditions this layer is present, whereas it is missing during a southward pointing IMF. This behavior can be understood in terms of a motion of reconnection spots due to the changes of the orientation of the magnetosheath magnetic field in the vicinity of the magnetopause. Our case and statistical studies demonstrate that the changes of the LLBL structure can be observed in the subsolar region as well as on flanks near the dawn‐dusk meridian. Moreover, the study emphasizes a role of magnetosheath magnetic field variations on the boundary layer formation. Key Points Southward versus northward IMF at the magnetopause Well‐developed outer and inner parts of the LLBL for a northward IMF Missing outer LLBL for a southward IMF orientation 其他題名： J. Geophys. Res. Space Physics 出版者： Washington: Blackwell Publishing Ltd 出版日期： 2015-05 出處： Journal of geophysical research : Space physics (2013 - Present), 2015-05, Vol.120 (5), p.3475-3488 資源來源： Wiley Online Library eJournals 版權： 2015. American Geophysical Union. All Rights Reserved. 識別號： ISSN: 2169-9380 識別號： ISSN: 2169-9402 識別號： EISSN: 2169-9402 識別號： DOI: 10.1002/2014JA020308
顯示於類別:	[太空科學與工程學系] 期刊論文

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