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K-H不稳定性在多电流片系统磁场重联中的效应
Alternative TitleA SIMULATION STUDY OF MAGNETIC RECONNECTION IN A MULTIPLE CURRENT SHEET SYSTEM
张洪; 沈超; 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
1997
Volume40Issue:4Pages:445-452
ISSN0001-5733
Language中文
Keyword电流片 磁场重联 磁流体力学 数值模拟 不稳定性
Abstract等离子体系中存在两外或多个电流片时,电流片中发生的不稳定性可能会相互作用,行星际磁场北向时,背阳面磁层顶电流片与磁尾等离子体片之间可能发生相互作用,高纬国界层强烈的流场剪切可能促进磁场重联,产生磁层亚暴,本文运用二维可压缩磁体模拟研究具有强烈流场剪切的多个电流片系统中磁场重联的演化,结果表明,Kelvin-Hemholtz不稳定性使多电流片系统的磁场重联过程明显加快,相邻电流片之间的距离越近,两者
Other AbstractIt is found that when the interaction between two current sheets causes reconnection,the region which separates two sheets dissipates its magnetic energy quickly and becomes thin. MHD Kelvin-Helmholtz instability is responsible for the development of magnetic reconnection at multiple current sheet system. The closer the distance between neighbour current sheets is,the stronger the interaction is.In tri-current sheet system,the magnetic reconnection in two side current sheets caused-super Alfven velocity fluid can induce magnetic reconnection in the middle current sheet.We also suggested that if there is magnetic reconnection at high latitude boundary layer while IMF is northward, the reconnection must influence the plasma sheet in magnetotail,and induce magnetic reconnection in it.
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/1314
Collection空间科学部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
张洪,沈超,北京8701信箱. K-H不稳定性在多电流片系统磁场重联中的效应[J]. 地球物理学报,1997,40(4):445-452.
APA 张洪,沈超,&北京8701信箱.(1997).K-H不稳定性在多电流片系统磁场重联中的效应.地球物理学报,40(4),445-452.
MLA 张洪,et al."K-H不稳定性在多电流片系统磁场重联中的效应".地球物理学报 40.4(1997):445-452.
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