Enhancement of High Energy Electron Fluxes and Variation of Atmospheric Electric Field in the Antarctic Region  

作　　者：LI Renkang CHEN Tao LUO Jing ZHOU Limin HE Zhaohai WANG Chunqin SUN Yueqiang 

机构地区：[1]State Key Laboratory of Space Weather,National Space Science Center,Chinese Academy of Sciences [2]College of Earth Sciences,University of Chinese Academy of Sciences [3]Key Laboratory of Geographic Information Science,Education Administration,East China Normal University

出　　处：《空间科学学报》2016年第1期40-48,共9页Chinese Journal of Space Science

基　　金：Supported by the National Basic Research Program of China(2011CB811404);the Natural Science Foundation of China(40774081);the Specialized Research Fund for State Key Laboratories;CAS-NSSC-135 project

摘　　要：High-energy electron precipitation in the high latitude regions enhances the ionization of the atmosphere,and subsequently increases the atmospheric conductivities and the vertical electric field of the atmosphere near the ground as well.The High-Energy Electron Flux(HEEF) data measured by the Fengyun-3 meteorological satellite are analyzed together with the data of nearsurface atmospheric vertical electric field measured at the Russian Vostok Station.Three HEEF enhancements are identified and it is shown that when the HEEF increases to a certain level,the local atmospheric vertical electric field near the ground can increase substantially than usual.The response time of the electric field to HEEF enhancement is about 3.7 to 4 days.High-energy electron precipitation in the high latitude regions enhances the ionization of the atmosphere, and subsequently increases the atmospheric conductivities and the vertical electric field of the atmosphere near the ground as well. The High-Energy Electron Flux （HEEF） data measured by the Fengyun-3 meteorological satellite are analyzed together with the data of nearsurface atmospheric vertical electric field measured at the Russian Vostok Station. Three HEEF enhancements are identified and it is shown that when the HEEF increases to a certain level, the local atmospheric vertical electric field near the ground can increase substantially than usual. The response time of the electric field to HEEF enhancement is about 3.7 to 4 days.

关 键 词：HIGH-ENERGY Electron Flux(HEEF) POLAR precipitation ATMOSPHERIC electric field 

分 类 号：P353[天文地球—空间物理学]