2001年1月26日高纬磁层顶通量管事件的观测研究 --空间电流密度计算及分析
MULTIPLE FLUX ROPE EVENTS AT THE HIGH-LATITUDE MAGNETOPAUSE ON JANUARY 26, 2001 :CURRENT DENSITY CALCULATING
查看参考文献13篇
|
文摘
|
讨论了三种根据ClusterⅡ四颗卫星的磁场测量数据计算空间电流的方法及其误差,论证了这几种方法的内在一致性,并得到了完全相同的计算结果.进而依据ClusterⅡ磁场探测资料,计算了2001年1月26日多重磁通量管和FTE事件中高纬磁层顶边界层和磁鞘区的电流密度.结果表明,磁通量管内电流密度较大,可达到约10-8A/m2;计算精度较高,结果可靠.本文还应用最小方差分析法(MVA),发现电流方向与通量管的轴向基本一致;论证了电流MVA分析在研究通量管性质时的作用,同时提出了电流管的概念. |
|
其他语种文摘
|
A systematic comparison is carried out for three Methods of current density calculating based on simultaneous magnetic field measurements of four-spacecraft Cluster mission. Analytically and numerically demonstrated that within the linear approximation, all these methods lead to the exactly the same results. As a case study, the current density of multiple flux rope events at the high-latitude magnetopause on January 26, 2001 is investigated. It is showed that an intense current flows inside the ropes with the current density reaching as high as about 10~(-8) A/m2. The current inside rope is valuable for the small relative calculating error. It is also found that the directory of current is almost parallel the axis of flux rope gotten by magnetic minimum variance analysis (MVA). It is supposed the current MVA method is useful and simply for the rope axis orientation. |
|
来源
|
地球物理学报
,2004,47(4):555-561 【核心库】
|
|
关键词
|
电流密度
;
通量管
;
磁层顶
;
最小方差分析法
|
|
地址
|
1.
北京大学地球与空间科学学院, 北京, 100871
2.
北京大学地球与窨科学学院, 北京, 100871
3.
Center for Space Physics,Boston University, 美国
4.
IGM,Technische University Braunschweig,Germany, 德国
5.
中国科学院空间科学与应用研究中心, 北京, 100080
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
0001-5733 |
|
学科
|
地球物理学 |
|
基金
|
国家自然科学基金
;
国家973计划
|
|
文献收藏号
|
CSCD:1592919
|
参考文献 共
13
共1页
|
|
1.
Escoubet C P. Cluster -science and Mission overview.
The Cluster and Phoenix Missions,1997:11-32
|
被引
3
次
|
|
|
|
|
2.
Balogh A. The Cluster magnetic field investigation.
The Cluster and Phoenix Missions,1997:65-92
|
被引
4
次
|
|
|
|
|
3.
Pu Z Y. Clster/Rapid observation on Junuary 26.
Surveys in Geophys,2001:24
|
被引
1
次
|
|
|
|
|
4.
黄宗英. ClusterⅡ对2001年1月26日高纬磁层顶的观测及初步分析.
地球物理学报,2004,47(2):181-189
|
被引
5
次
|
|
|
|
|
5.
Wilken B. RAPID - The Imaging Energetic Particle Spectrometer on Cluster.
The Cluster and Phoenix Missions,1997:399-473
|
被引
1
次
|
|
|
|
|
6.
Khurana K K. Use of nutral constraints on vector data obtained from four spinning spacescraft.
IEEE Trans. on Magnetics,1996,32(5):5193-5205
|
被引
4
次
|
|
|
|
|
7.
Dunlop M W. Configurational sensitivity of multipoint magnetic field measurements.
Proceedings of the International Workshop on "Space Plasma Physics Investigations by Cluster and Regatta,1990:23-28
|
被引
1
次
|
|
|
|
|
8.
Robert P. Accuracy of Current Density Determination.
Analysis Methods for Multi-Spacecraft Data,1998:395-418
|
被引
9
次
|
|
|
|
|
9.
Chanteur G. Geometrical tools for Cluster data analysis.
Proc. International Conf. "Spatio-Temporal Analysis for Resolving Plasma Turbulence (START)" , ESA WPP-047,1993:341-344
|
被引
1
次
|
|
|
|
|
10.
Chanteur G. Theory.
Analysis Methods for MultiSpacecraft Data,1998:349-369
|
被引
1
次
|
|
|
|
|
11.
Russell C T. Olservation of magnetic flux ropes in the Venus ionosphere.
Nature,1979,279:618-620
|
被引
1
次
|
|
|
|
|
12.
Farrugia C J. Theory.
Planet Space Sci,1987,35(2):227-240
|
被引
5
次
|
|
|
|
|
13.
Bosqued J M. Initial results from the CIS ion instruments.
Annales Geophysical,2001,19:1545-1566
|
被引
2
次
|
|
|
|
|
了解气象卫星更多信息，请访问