The effect of non-storm time substorms on the ring current dynamics  

作　　者：EunJin Jang Chao Yue QiuGang Zong SuiYan Fu HaoBo Fu 

机构地区：[1]Institute of Space Physics and Applied Technology,Peking University,Beijing 100871,China

出　　处：《Earth and Planetary Physics》2021年第3期251-258,共8页地球与行星物理（英文版）

基　　金：supported by a research grant of China National Space Administration project D020303,NSFC Grant Numbers:41974191;the National Key R&D Program of China 2020YFE0202100。

摘　　要：During geomagnetically active times such as geomagnetic storms,large amounts of energy can be released into the Earth’s magnetosphere and change the ring current intensity.Previous studies showed that significant enhancement of the ring current was related to geomagnetic storms,while few studies have examined substorm effects on ring current dynamics.In this study,we examine the ring current variation during non-storm time(SYM-H>−50 nT)substorms,especially during super-substorms(AE>1000 nT).We perform a statistical analysis of ring current plasma pressure and number flux of various ion species under different substorm conditions,based on Van Allen Probe observations.The plasma pressure and ion fluxes of the ring current increased dramatically during supersubstorms,while little change was observed for substorms with AE<1000 nT.The results shown in this study indicate that a non-storm time super-substorm may also have a significant contribution to the ring current.

关 键 词：super-substorms ring current ion fluxes 

分 类 号：P353[天文地球—空间物理学]