On the retreat of near-Earth neutral line during substorm expansion phase: a THEMIS case study during the 9 January 2008 substorm

The location of magnetic reconnection in the mid-tail during a substorm was studied in many researches. Here we present multi-point THEMIS observations of a reconnection event in the near-Earth magnetotail during substorm. In this event, THEMIS probes stayed in the near-Earth and mid-tail region ali...

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Bibliographic Details
Published in:Annales geophysicae (1988) 2012-01, Vol.30 (1), p.143-151
Main Authors: CAO, X, PU, Z. Y, DU, A. M, MISHIN, V. M, WANG, X. G, XIAO, C. J, ZHANG, T. L, ANGELOPOULOS, V, MCFADDEN, J. P, GLASSMEIER, K. H
Format: Article
Language:English
Subjects:
Case studies
Magnetic fields
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Summary:The location of magnetic reconnection in the mid-tail during a substorm was studied in many researches. Here we present multi-point THEMIS observations of a reconnection event in the near-Earth magnetotail during substorm. In this event, THEMIS probes stayed in the near-Earth and mid-tail region aligning along the magnetotail. This allows reconnection evolution to be probed simultaneously from about −10 RE to −23 RE down tail. The Hall current related electron streams were observed at the same time by two probes far away from the reconnection site. Before near-Earth reconnection involved the tail lobe magnetic field, the reconnection site was restricted in earthward −23 RE. When reconnection involved into the tail lobe region, the reconnection site started to retreat gradually.
ISSN:0992-7689
1432-0576
1432-0576
DOI:10.5194/angeo-30-143-2012