Electric field penetration into Earth's ionosphere:a brief review for 2000–2013  

2000~2013年地球电离层电场穿透研究简评（英文）

作　　者：魏勇 赵必强 李国主 万卫星 

机构地区：[1]Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences

出　　处：《Science Bulletin》2015年第8期748-761,M0003,共15页科学通报（英文版）

基　　金：supported by the Thousand Young Talents Program of China,the National Basic Research Program of China(2011CB811405);the National Natural Science Foundation of China(41321003,41174136,41174138)

摘　　要：Electric field penetration is a consequence of solar wind interaction with planetary magnetosphere and/or ionosphere. For both Earth with intrinsic magnetosphere and Mars/Venus without intrinsic magnetosphere, the penetration electric field causes various kinds of global and local electrodynamic response of the ionosphere to the solar wind electric field, especially the plasma motion in the ionosphere. Within the first 14 years of the twenty-first century, the cause and effect of the electric field penetra- tion on Earth has been investigated extensively and understood more deeply. Here we review the progress acquired on the patterns and drivers of the penetration electric field, and its influences on the plasma distribution and the equatorial spread F in the mid- and low-latitude ionosphere. From the perspective of comparative study, we also shortly introduce the new results for Mars. What has become clear is that our understanding of electric field penetration has been significantly improved, but ultimately the crucial details of the global picture still remain un- known. Looking forward to the future research of the electric field penetration in Earth＇s ionosphere, the break- through relies on new instruments built up at different longitudes to improve the global coverage of the observa- tion. An integrated network of instrument is necessary to reveal the longitude and local-time dependence of the electric field penetration and shed new light on the physical details of the global ionospheric processes driven by the electric field penetration.电场穿透现象是太阳风与行星电离层-磁层系统相互作用所产生的一种全球尺度电离层扰动现象.无论是对于有内禀磁层的地球,还是无内禀磁层的金星和火星,太阳风电场都能耦合进入其电离层.在21世纪的前14年,人们在电场穿透的机理、效应、观测特征等多方面取得较多成果.本文主要梳理3个方面的进展:(1)穿透电场的驱动过程及观测特征;(2)穿透电场对中低纬电离层等离子分布的影响;(3)穿透电场对赤道扩展F层的形成与演化的影响.总体来看,对于电场穿透理解的深化有赖于将来观测网络的扩大与观测手段的强化.

关 键 词：Electric field penetration IONOSPHERE MAGNETOSPHERE 

分 类 号：P352[天文地球—空间物理学] TM26[天文地球—地球物理学]