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Bow shock and magnetopause contributions to the magnetospheric current system: Hints from the Cluster observations
Tang, B. B.; Wang, C.; Guo, X. C.; Tang, BB (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing 100190, Peoples R China.
Department空间科学部
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
2012
Volume117Pages:A01214
ISSN2169-9380
Language英语
AbstractWe perform a statistical study of the surface current at the high-latitude magnetopause (HLMP) and the bow shock under different southward interplanetary magnetic field (IMF) conditions, taking advantage of the crossing events of these discontinuities by the Cluster spacecraft. With an enhancement of southward IMF B-Z, the surface current at HLMP reduces, while increasing at the bow shock. Since the amount of the magnetospheric current increases with the increase of southward IMF B-Z, a synthesis analysis based on the Cluster observations suggests the bow shock and HLMP together contribute to the magnetospheric current system, and the bow shock would become an important current generator when the southward IMF B-Z becoming large. This scenario accords with the previous global magnetohydrodynamic (MHD) simulations.; We perform a statistical study of the surface current at the high-latitude magnetopause (HLMP) and the bow shock under different southward interplanetary magnetic field (IMF) conditions, taking advantage of the crossing events of these discontinuities by the Cluster spacecraft. With an enhancement of southward IMF B-Z, the surface current at HLMP reduces, while increasing at the bow shock. Since the amount of the magnetospheric current increases with the increase of southward IMF B-Z, a synthesis analysis based on the Cluster observations suggests the bow shock and HLMP together contribute to the magnetospheric current system, and the bow shock would become an important current generator when the southward IMF B-Z becoming large. This scenario accords with the previous global magnetohydrodynamic (MHD) simulations.
Indexed BySCI
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/3149
Collection空间科学部
Corresponding AuthorTang, BB (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Tang, B. B.,Wang, C.,Guo, X. C.,et al. Bow shock and magnetopause contributions to the magnetospheric current system: Hints from the Cluster observations[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2012,117:A01214.
APA Tang, B. B.,Wang, C.,Guo, X. C.,&Tang, BB .(2012).Bow shock and magnetopause contributions to the magnetospheric current system: Hints from the Cluster observations.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,117,A01214.
MLA Tang, B. B.,et al."Bow shock and magnetopause contributions to the magnetospheric current system: Hints from the Cluster observations".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 117(2012):A01214.
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