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《Chinese Journal of Geophysics》 2007-03
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The statistical characteristics of the tailward flows in the near-Earth region explored by TC-1

LIU Zhen-Xing~1, ZHANG Ling-Qian~1, MA Zhi-Wei~2, WANG Ji-Ye~3, PU Zu-Yin~4, SHEN Chao~1, GUO Jiu-Ling~51 Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100080, China2 Center of Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027, China3 Physics and Electron Engineering Academy, Central Nationality University, Beijing 100081, China 4 School of Earth and Space Science, Peking University, Beijing 100871, China5 Modern Education Technology Center, Peking University, Beijing 100871, China  
During quiet time and substorm process, tailward flow often explored in the near-Earth magnetotail by TC-1 satellite. The tailward flow is most strong near the equator, and stronger in the dusk-side and dawn-side than that in the night-side. The tailward flow tends to move from the dusk-side and dawn-side to the night-side, and becomes stronger while moving away the Earth. From 1, Jul. 2004 to 31, Nov. 2004, TC-1 satellite explored 516 tailward flow events between 7R_E to 13R_E, which the duration exceed 3 min. The statistic results showed that: Compared with the earward flow from the mid-tail, the near-Earth low latitude tailward flow from the ionosphere is characteristic of the low-temperature and high density; With the tailward flow moving from the lobal region to the plasma sheet, the velocity of the tailward flow decrease, the density and the temperature increase. The tailward flow has distinct anisotropy depending on the difference of the parallel with perpendicular temperature.
【Fund】: 国家自然科学基金重大项目“地球空间暴多时空尺度物理过程研究”(40390150);; 国家自然科学基金重点项目(40474058);; 国家杰出青年基金项目(40125012)资助
【CateGory Index】: P353
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