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TC-1 observations of flux pileup and dipolarization-associated expansion in the near-Earth magnetotail during substorms
Zhang, H.; Pu, Z. Y.; Cao, X.; Fu, S. Y.; Liu, Z. X.; Ma, Z. W.; Dunlop, M. W.; Baumjohann, W.; Xiao, C. J.; Hong, M. H.; Cao, J. B.; Zong, Q. G.; Wang, X. G.; Carr, C.; Reme, H. A.; Dandouras, I.; Fazakerley, A.; Frey, H. U.; Escoubet, C. P.; 北京8701信箱
Department空间天气学国家重点实验室
Source PublicationGeophysical Research Letters
2007
Volume34Issue:3Pages:L03104
ISSN0094-8276
Language英语
KeywordCurrent Wedge Current Disruption Onset Instrument Braking Model Flow
AbstractFifty-three substorms measured by Double Star/TC-1 in the near-Earth magnetotail from July to October, 2004 are studied. The main features of these events are: ( a) Magnetic flux pileup characterized by continuous enhancement of B-z is observed, which starts almost simultaneously with aurora breakup within 1 - 3 minutes, indicating that substorm onset is in close relation to flux pileup. ( b) Sudden plasma sheet expansion with sharp increases in ion temperature and density is seen in all events, which occurs typically similar to 11 minutes after the beginning of pileup. The plasma sheet expansion is shown to be in close relation with the primary substorm dipolarization and, hence, can be referred to as 'dipolarization-associated expansion'. ( c) Evidence indicates that the substorm current wedge first forms earthward of TC-1 position and, hence, inward of the flow braking region, and then propagates tailward with an expansion in the Z-direction. Possible implications of these observations are briefly discussed.
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/122/1088
Collection空间科学部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
Zhang, H.,Pu, Z. Y.,Cao, X.,et al. TC-1 observations of flux pileup and dipolarization-associated expansion in the near-Earth magnetotail during substorms[J]. Geophysical Research Letters,2007,34(3):L03104.
APA Zhang, H..,Pu, Z. Y..,Cao, X..,Fu, S. Y..,Liu, Z. X..,...&北京8701信箱.(2007).TC-1 observations of flux pileup and dipolarization-associated expansion in the near-Earth magnetotail during substorms.Geophysical Research Letters,34(3),L03104.
MLA Zhang, H.,et al."TC-1 observations of flux pileup and dipolarization-associated expansion in the near-Earth magnetotail during substorms".Geophysical Research Letters 34.3(2007):L03104.
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