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The causal sequence investigation of the ring current ion-flux increasing and the magnetotail ion injection during a major storm
Cao, JinBin; Li, Lu; McKenna-Lawlor, S. +2 more
Comprehensive records are available in ENA data of ring current activity recorded by the NUADU instrument aboard TC-2 on 15 May, 2005 during a major magnetic storm (which incorporated a series of substorms). Ion fluxes at 4-min temporal resolution derived from ENA data in the energy ranges 50-81 and 81-158 keV are compared with in situ particle fl…
New method for determining central axial orientation of flux rope embedded within current sheet using multipoint measurements
Chen, Tao; Li, ZhaoYu; Yan, GuangQing
A new method for determining the central axial orientation of a two-dimensional coherent magnetic flux rope (MFR) via multipoint analysis of the magnetic-field structure is developed. The method is devised under the following geometrical assumptions: (1) on its cross section, the structure is left-right symmetric; (2) the projected structure veloc…
Altitude of the upper boundary of AAR based on observations of ion beams in inverted-V structures: A case study
Xie, Lun; Parks, George; Cui, YanBo +5 more
Outflowing ion beams forming four successive inverted-V structures in the energy-time spectrograms of H+, He+, and O+ were observed at an altitude of 3.4 RE by Cluster satellites travelling above the auroral acceleration region (AAR) in the southern hemisphere on February 14, 2001. Energization by negative U-shaped potential structures in the AAR …
Some properties of field-aligned electron events in high-altitude polar regions
Zhang, ZiYing; Shi, JianKui; Zhou, MingQuan +2 more
Using data from the Cluster spacecraft from January 2003 to December 2004, we perform a statistical study on some properties of the field-aligned electron (FAE) events and interplanetary magnetic field (IMF) By dependence of FAE events with different durations in high-altitude polar regions. A total of 1335 FAE events were observed by the C3 space…