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Convective high-speed flow and field-aligned high-speed flows explored by TC-1

Convective high-speed flow and field-aligned high-speed flows explored by TC-1

Publication date: 03 August 2008

Authors: Zhang, L.Q. et al.

Journal: Chinese Science Bulletin
Volume: 53
Issue: 15
Page: 2371-2375
Year: 2008

Copyright: Science in China Press, Springer

From June 1, 2004 to October 31, 2006, a total 465 high-speed flow events are observed by the TC-1 satellite in the near-Earth region (-13 RE < x < -9 RE, |Y|<10 RE, |Z|<5 RE). Based on the angle between the flow and the magnetic field, the high-speed flow events are further divided into two types, that is, field-aligned high-speed flow (FAHF) in the plasma sheet boundary and convective bursty bulk flow (BBF) in the center plasma sheet. Among the total 465 high-speed flow events, there are 371 FAHFs, and 94 BBFs. The CHF are mainly concentrated in the plasma sheet, the intersection angle between the flow and the magnetic field is larger, the magnetic field intensity is relatively weak. The FHF are mainly distributed near the boundary layer of the plasma sheet, the intersection angle between the flow and magnetic field is smaller, and the magnetic field intensity is relatively strong. The convective BBFs have an important effect on the substorm.

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