Interaction between reconnection and Kelvin-Helmholtz at the high-latitude magnetopause

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• 作者：Xuanye Ma ; ^{xma2@alaska.edu" class="auth_mail" title="E-mail the corresponding author} ; Antonius Otto ^{ao@how.gi.alaska.edu" class="auth_mail" title="E-mail the corresponding author} ; Peter A. Delamere ^{Peter.Delamere@gi.alaska.edu" class="auth_mail" title="E-mail the corresponding author} ; Hui Zhang ^{hzhang@gi.alaska.edu" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Kelvin&ndash ; Helmholtz instability ; Reconnection ; Boundary normal analysis
• 刊名：Advances in Space Research
• 出版年：2016
• 出版时间：15 July 2016
• 年：2016
• 卷：58
• 期：2
• 页码：231-239
• 全文大小：911 K

文摘

On March 23, 2002, Cluster satellites recorded an event, which has been interpreted as reconnection, during an outward crossing near the dawn side cusp region in the Northern Hemisphere. The event showed a large perturbation in the magnetic normal component, inconsistent with a one-dimensional reconnection layer configuration, and causing a poor result in a minimum magnetic variance analysis. The utilization of the plasma velocity or electric field data significantly improves the boundary normal analyses. Through the comparison between observational data and local three-dimensional MHD simulations, it is demonstrated that this perturbation is likely an indication of a strong boundary modulation by a KH wave. The event is used to examine several established and new boundary normal analysis methods.