High-speed flowing plasmas in the Earth’s plasma sheet  

作　　者：FU SuiYan SHI QuanQi WANG Chi PARKS George ZHENG Ling ZHENG Hao SUN WeiJie 

机构地区：[1]School of Earth and Space Sciences, Peking University, Beijing 100871, China [2]State Key Laboratory of Space Weather, Chinese Academy of Sciences, Beijing 100190, China [3]School of Space Science and Physics, Shandong University at Weihai, Weihai 264209, China [4]Space Sciences Laboratory, UC Berkeley, Berkeley, CA94720-5200, USA

出　　处：《Chinese Science Bulletin》2011年第12期1182-1187,共6页

基　　金：supported by the National Natural Science Foundation of China (40874086 and 41031065);the Specialized Research Fund for State Key Laboratories (08262DAA4S)

摘　　要：A research topic of great interest to the space physics community is the observation of plasmas flowing at hundreds of kilometers per second in the Earth’s plasma sheet. Although considerable effort has been made to understand the source of fast-flowing plasmas, many questions remain unanswered about the mechanisms that produce high-speed flows and the effects they have on magnetospheric disturbances, especially their contributions to magnetospheric convection and substorms. In this paper, we discuss briefly the history of high-speed flows and review the proposed mechanisms, signatures of high-speed flows in auroras and their interaction with the background plasma. We then summarize the relationships between high-speed flows and magnetic structures, discuss questions associated with substorms, and finally pose several important scientific questions that need to be addressed.A research topic of great interest to the space physics community is the observation of plasmas flowing at hundreds of kilometers per second in the Earth＇s plasma sheet. Although considerable effort has been made to understand the source of fast-flowing plasmas, many questions remain unanswered about the mechanisms that produce high-speed flows and the effects they have on magnetospheric disturbances, especially their contributions to magnetospheric convection and substorms. In this paper, we discuss briefly the history of high-speed flows and review the proposed mechanisms, signatures of high-speed flows in auroras and their interaction with the background plasma. We then summarize the relationships between high-speed flows and magnetic structures, discuss questions associated with substorms, and finally pose several important scientific questions that need to be addressed.

关 键 词：等离子体片 高速流动 地球 磁层对流 空间物理学 等离子体源 相互作用 科学问题 

分 类 号：P352[天文地球—空间物理学]