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题名: Geoeffective Properties of Solar Transients and Stream Interaction Regions
作者: Kilpua, E.K.J.; Balogh, A.; von Steiger, R.; Liu, Y.D.
作者部门: 空间科学部
通讯作者: Kilpua, E.K.J. (emilia.kilpua@helsinki.fi)
刊名: Space Science Reviews
ISSN号: 0038-6308
出版日期: 2017
页码: 1-44
收录类别: EI
英文摘要: Interplanetary Coronal Mass Ejections (ICMEs), their possible shocks and sheaths, and co-rotating interaction regions (CIRs) are the primary large-scale heliospheric structures driving geospace disturbances at the Earth. CIRs are followed by a faster stream where Alfvénic fluctuations may drive prolonged high-latitude activity. In this paper we highlight that these structures have all different origins, solar wind conditions and as a consequence, different geomagnetic responses. We discuss general solar wind properties of sheaths, ICMEs (in particular those showing the flux rope signatures), CIRs and fast streams and how they affect their solar wind coupling efficiency and the resulting magnetospheric activity. We show that there are two different solar wind driving modes: (1) Sheath-like with turbulent magnetic fields, and large Alfvén Mach ((Formula presented.)) numbers and dynamic pressure, and (2) flux rope-like with smoothly varying magnetic field direction, and lower (Formula presented.) numbers and dynamic pressure. We also summarize the key properties of interplanetary shocks for space weather and how they depend on solar cycle and the driver. © 2017 Springer Science+Business Media B.V.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.nssc.ac.cn/handle/122/6039
Appears in Collections:空间科学部_期刊论文

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