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1997年1月事件行星际扰动在三维背景太阳风中传播的数值模拟
Alternative TitleNUMERICAL SIMULATION FOR PROPAGATION OF INTERPLANETARY DISTURBANCE IN THREE-DIMENSIONAL SOLAR WIND BACKGROUND DURINGJANUARY 1997 EVENT
石勇; 魏奉思; 冯学尚; 叶占银; 北京8701信箱
Department空间天气学国家重点实验室
Source Publication地球物理学报
2001
Volume44Issue:3Pages:303-310
ISSN0001-5733
Language中文
Keyword太阳风背景场 行星际扰动 数值模拟 1997年 Mhd模式 太阳源
Abstract利用一个三维的MHD模式,从数值预报的角度出发,以1997年1月事件的有关太阳观测为依据,构造比较符合物理实际的边值条件,通过三维数值模拟得到了稳定的比较接近真实的太阳风背景场,结果显示此次事件太阳风背景场的磁场关于赤道面不对称,有较明显的倾斜和扭曲,同时磁场较弱,等离子体各参量相对于事件的太阳源为东西和南北不对称结构,本文数值模拟了磁场南北分量Bθ的不同取法对背景场的影响,结果表明在源表面磁场有明显倾斜的情况下,内边界处磁场南北分量不宜假设为零,在此基础上,初步数据研究了行星际扰动在三维背景场中的传播过程,并与WIND卫星的观测进行了对比.
Other AbstractBased on a three-dimensional MHD model,a relatively real interplanetary solar wind background during J anurary 1997 event is obtained by using a set of initial and boundary conditions derived from some observations near the real space environment.Results show that the magnetic field at the source surface is equatorially saynmetric and is obviously tilted and wrapped,In addition,the plasma variables are asymmet ric in relation to the event location. The numerical experiment for the different schemes of Bθ show that under an obviously tilted current sheet,Bθcan not be assumed to be zero.Based on these background result s,the propagation process of disturbance is obtained.We also provide comparison with the WIND observations.
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.nssc.ac.cn/handle/122/1290
Collection空间科学部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
石勇,魏奉思,冯学尚,等. 1997年1月事件行星际扰动在三维背景太阳风中传播的数值模拟[J]. 地球物理学报,2001,44(3):303-310.
APA 石勇,魏奉思,冯学尚,叶占银,&北京8701信箱.(2001).1997年1月事件行星际扰动在三维背景太阳风中传播的数值模拟.地球物理学报,44(3),303-310.
MLA 石勇,et al."1997年1月事件行星际扰动在三维背景太阳风中传播的数值模拟".地球物理学报 44.3(2001):303-310.
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