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《Chinese Journal of Geophysics》 2009-12
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Manifestation of the AE index in substorms on August 6,1998

WANG Qiu-Jun~(1,3),DU Ai-Min~(1,2*),ZHAO Xu-Dong~(1,3),LUO Hao~(1,3),XU Wen-Yao~11 Institute of Geology and Geophysics.Chinese Academy of Sciences,Beijing 100029,China2 State Key Laboratory for Space Weather,Chinese Academy of Sciences,Beijing 100190.China3 Graduate University of Chinese Academy of Sciences,Beijing 100049,China  
Auroral electrojet index (AE) is usually used to quantitatively describe the activity of the geomagnetic field in the polar region.AE is a means to identify the level of a substorm as well.In the present paper,we analyze the characteristics of aurora,ionospheric current system and the AE index.It is noted that for the pseudo-breakup events the variations of AE (500 nT) clearly show the sudden increase and slow decrease phases.However,aurora does not expand poleward or equatorward,and the ionospheric currents present the features of the magnetic convection.We mainly focus on investigating what time the AE could be used to identify the substorm.
【Fund】: 973计划(2006CB806305);; 国家自然科学基金(40772086 40536029);; 国家科技支撑计划课题(2008BAC35801)资助.
【CateGory Index】: P353
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