中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
火星空间大尺度电流体系分布特征

文献类型:期刊论文

作者刘童笛; 李磊; 张艺腾; 谢良海
刊名空间科学学报
出版日期2012
卷号32期号:6页码:765-770
关键词火星 电流 弓激波 磁堆积区 电离层 磁尾
ISSN号0254-6124
其他题名Global Distribution of Currents in Martian Space
通讯作者liutongdi_163@163.com
中文摘要在MHD模型基础上,对火星空间环境的电流分布进行了模拟。结果表明,火星空间存在着弓激波电流、磁堆积区电流、电离层电流和磁尾电流。弓激波电流在激波曲面上均由北向南自成体系,电流密度在弓激波顶区域较大。在向阳面磁堆积区边界电流与电离层电流彼此耦合形成完整的回路,在背阳面磁堆积区边界电流与磁尾中心电流片耦合形成完整的回路。
英文摘要Based on the MHD model, the distribution of the currents in Martian space is calculated. The results show that there are 4 categories of currents, i.e., the bow-shock current, magnetic pileup boundary current, the ionosphere current and the magnetotail current in Martian space. Currents flow on the surface of the bow-shock independently, which direction are perpendicular to the interplanetary magnetic field direction, with the peak current density located around the subsolar point. At dayside, the magnetic pileup boundary current closes through the ionosphere; while at nightside, magnetic pileup boundary current couples with central current sheet in the magnetotail to form a complete circuit. Magnetotail central currents near Mars within 1.2 Rm affected greatly by the ionosphere, would be separated for two or more current slices coupling together. The strength of ionosphere current, flowing from south to north, is the biggest in all, more than 100 nA. m~(-2) in average; and the strength at dayside is bigger compared to that of the nightside.
学科主题空间物理
收录类别CSCD
语种中文
CSCD记录号CSCD:4719437
公开日期2014-12-15
源URL[http://ir.nssc.ac.cn/handle/122/3050]  
专题国家空间科学中心_空间科学部
推荐引用方式
GB/T 7714
刘童笛,李磊,张艺腾,等. 火星空间大尺度电流体系分布特征[J]. 空间科学学报,2012,32(6):765-770.
APA 刘童笛,李磊,张艺腾,&谢良海.(2012).火星空间大尺度电流体系分布特征.空间科学学报,32(6),765-770.
MLA 刘童笛,et al."火星空间大尺度电流体系分布特征".空间科学学报 32.6(2012):765-770.

入库方式: OAI收割

来源:国家空间科学中心

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