Invariant Modulation of IMF Clock Angle on the Solar Wind Energy Input into the Magnetosphere

作     者：HAN Jinpeng LI Hui TANG Binbin WANG Chi HAN Jinpeng;LI Hui;TANG Binbin;WANG Chi

作者机构：State Key Laboratory of Space WeatherNational Space Science CenterChinese Academy of Sciences College of Earth ScienceUniversity of the Chinese Academy of Sciences Research and Development CenterChina Academy of Launch Vehicle Technology 

出 版 物：《空间科学学报》 (Chinese Journal of Space Science)

年 卷 期：2015年第35卷第6期

页      面：673-678页

核心收录：

学科分类：070802[理学-空间物理学] 07[理学] 0708[理学-地球物理学] 

基　　金：Supported by the National Basic Research Program(2012CB825602) National Natural Science Foundation of China(NNSFC,41204118,41231067) in part by the Specialized Research Fund for State Key Laboratories of China 

主　　题：MHD simulation Clock angle Energy input Energy cou 

摘      要：By use of the global PPMLR Magnetohydrodynamics(MHD) model,a serial of quasisteady-state numerical simulations were conducted to examine the modulation property of the interplanetary magnetic field clock angle θ on the solar wind energy input into the *** the simulations can be divided into seven groups according to different criteria of solar wind *** each group,37 numerical examples are analyzed,with the clock angle varying from 0° to 360° with an interval of 10°,keeping the other solar wind parameters(such as the solar wind number density,velocity,and the magnetic field magnitude) *** expected,the solar wind energy input into the magnetosphere is modulated by the IMF clock *** axisymmetrical bell-shaped curve peaks at the clock angle of 180°.However,the modulation effect remains invariant with varying other solar wind *** function form of such an invariant modulation is found to be sin(0/2)^(2.70) + 0.25.