Alfven Waves in a Plasma Sheet Boundary Layer Associated with Near-Tail Magnetic Reconnection  

作　　者：袁志刚 邓晓华 庞烨 李世友 王敬芳 

机构地区：[1]School of Electronic Information, Wuhan University, Wuhan 430072

出　　处：《Chinese Physics Letters》2007年第4期1122-1124,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Granted Nos 40604021, 40574074 40325012 and 40390151, China Postdoctoral Science Foundation, 0pen Research Fund Program of the Key Laboratory of Geospace Environment and Geodesy, Wuhan University.

摘　　要：We report observations from Geotail satellite showing that large Poynting fluxes associated with Alfven waves in the plasma sheet boundary layer （PSBL） occur in the vicinity of the near-tail reconnection region on 10 December 1996. During the period of large Poynting fluxes, Geotail also observed strong tailward plasma flows. These observations demonstrate the importance of near-tail reconnection process as the energy source of Alfven waves in the PSBL. Strong tailward （Earthward） plasma flows ought to be an important candidate in generating Alfven waves. Furthermore, the strong perturbations not only of the magnetic field but also of the electric field observed in the PSBL indicate that the PSBL plays an important role in the generation and propagation of the energy flux associated with Alfven waves.We report observations from Geotail satellite showing that large Poynting fluxes associated with Alfven waves in the plasma sheet boundary layer （PSBL） occur in the vicinity of the near-tail reconnection region on 10 December 1996. During the period of large Poynting fluxes, Geotail also observed strong tailward plasma flows. These observations demonstrate the importance of near-tail reconnection process as the energy source of Alfven waves in the PSBL. Strong tailward （Earthward） plasma flows ought to be an important candidate in generating Alfven waves. Furthermore, the strong perturbations not only of the magnetic field but also of the electric field observed in the PSBL indicate that the PSBL plays an important role in the generation and propagation of the energy flux associated with Alfven waves.

关 键 词：GEOTAIL OBSERVATIONS IONOSPHERE SATELLITE POWER FLUX 

分 类 号：O48[理学—固体物理]