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- Title
On the retreat of near-Earth neutral line during substorm expansion phase: a THEMIS case study during the 9 January 2008 substorm.
- 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.
- Abstract
The location of magnetic reconnection in the midtail 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 midtail region aligning along the magnetotail. This allows reconnection evolution to be probed simultaneously from about -10RE to -23RE 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 -23RE. When reconnection involved into the tail lobe region, the reconnection site started to retreat gradually.
- Subjects
MAGNETIC fields; MAGNETOSPHERIC substorms; MAGNETOTAILS; MAGNETOSPHERE; ELECTRONS
- Publication
Annales Geophysicae (ANGEO) (09927689), 2012, Vol 30, Issue 1, p143
- ISSN
0992-7689
- Publication type
Article
- DOI
10.5194/angeo-30-143-2012