摘要
本文介绍了一个新的磁层全球三维MHD模型 ,该模型可通过把IMF和地球磁场分开处理的方法“关闭”磁层顶的磁重联 ,从而可直观地显示不同IMF条件下磁层顶的IMF与地磁场的反平行区域 ,即磁重联最可能发生的地方 .结果表明 ,IMFBx 分量对磁层顶磁重联有重要影响 .由于可关闭磁重联 ,该模型还可有效地研究有无磁重联时 ,太阳风对磁层位形 (如晨 昏不对称性 )、粒子输运等重要问题的影响 ,有助于揭示磁层物理现象的基本特性 .
We have developed a new 3-D MHD magnetosphere simulation model. One of the main features of this model is that it can “close' the magnetic reconnection by a method of dealing with IMF and the dipole magnetic field separately. B y introducing the anti-parallel theory, this method can show the possible reconnection sites on the magnetopause distinctly like the gas dynamic model. The results show that the IMF B x component also has important influence on magnetic reconnection on the magnetopause like the other two components. We suggest that this model may be helpful to the study of solar-territorial interaction from a different point of shutting down the magnetic reconnection, and may reveal some important physical processes of the magnetosphere.
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
2005年第1期7-12,共6页
Chinese Journal of Geophysics
基金
国家自然科学基金项目 (4 0 3 90 15 0 )资助
关键词
磁层
MHD模拟
磁重联
行星际磁场
Magnetosphere, MHD simulation, Magnetic reconnection, IMF.
