Chin. Phys. Lett.  2008, Vol. 25 Issue (5): 1916-1918    DOI:
Original Articles |
Interhemispheric Comparison of Dipole Tilt Angle Effects on Latitude of Mid-Altitude Cusp
GUO Jian-Guang1,2;SHI Jian-Kui1;ZHANG Tie-Long3;LIU Zhen-Xing1
1State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 1000802Graduate University of Chinese Academy of Sciences, Beijing 1000493Space Research Institute, Austrian Academy of Sciences, Graz, Austria
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GUO Jian-Guang, SHI Jian-Kui, ZHANG Tie-Long et al  2008 Chin. Phys. Lett. 25 1916-1918
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Abstract A statistical study of interhemispheric comparison of dipole tilt angle effect on the latitude of the mid-altitude cusp is preformed by a data set of the Cluster cusp crossings over a 5-year period. The result shows that the dipole tilt angle has a clear control of the cusp latitudinal location. When the dipole tilts sunwards, the cusp is shifted poleward. The northern cusp moves 1° ILAT for every 15.4° increase in the dipole tilt angle, while the southern cusp moves 1° ILAT for every 20.8° increase in the dipole tilt angle. This suggests that an interhemispheric difference appears in the dependence of cusp latitudinal location on the dipole tilt angle.
Keywords: 94.20.Wh      94.30.Cg      94.30.C-     
Received: 18 September 2007      Published: 29 April 2008
PACS:  94.20.wh (Ionosphere/magnetosphere interactions)  
  94.30.cg (Magnetospheric cusp)  
  94.30.C- (Magnetospheric configuration and dynamics)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2008/V25/I5/01916
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GUO Jian-Guang
SHI Jian-Kui
ZHANG Tie-Long
LIU Zhen-Xing
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