Association of Auroral Streamers and Bursty Bulk Flows During Different States of the Magnetotail: A Case Study

Association of Auroral Streamers and Bursty Bulk Flows During Different States of the Magnetotail: A Case Study
复制标题

磁尾不同状态下极光流与突发体流的关联:案例研究

DOI:
10.1029/2021ja029329
复制
发表时间:
2021
期刊:
Journal of Geophysical Research: Space Physics
影响因子:
--
通讯作者:
Murphy, Kyle
Murphy, Kyle
中科院分区:
--
文献类型:
--
作者:
Ferdousi, Banafsheh;Raeder, Joachim;Zesta, Eftyhia;Cramer, William;Murphy, Kyle

文献摘要

参考文献

被引文献

相似文献

在磁尾的现场测量是稀疏的,仅限于单点。另一方面,在电离层有广泛的观测,包括磁力计、极光成像仪和雷达。由于夜侧电离层类似于磁尾等离子体片动力学投影,因此可以用来监测磁尾的动力学。正确解释电离层和地面观测需要了解电离层和磁层之间的耦合过程。在这里,我们使用全球磁流体动力学模拟模型,OpenGGCM-CTIM-RCM,研究这些耦合过程期间,磁通量通过窄的快速流动通道,通常称为突发性整体流动(BBF)通过尾部运输。我们认为三个相关的状态的磁尾:亚暴的发病前,在亚暴的扩张,并在一个稳定的磁对流(SMC)事件。在SMC期间,流动通道的数量增加,并且它们更接近地球。IMF方向影响快速流动的位置,但不影响它们在等离子体片中的取向。然而,快速流和流光的尺寸不依赖于IMF的条件和磁层的状态。
In‐situ measurements in the magnetotail are sparse and limited to single points. On the other hand, there is a broad range of observations, including magnetometers, aurora imagers, and radars, in the ionosphere. Since the nightside ionosphere resembles the magnetotail plasma sheet dynamics projection, it can be used to monitor the tail's dynamics. A proper interpretation of the ionosphere and ground observations necessitates understanding the coupling processes between the ionosphere and the magnetosphere. Here, we use the global magnetohydrodynamic simulation model, OpenGGCM‐CTIM‐RCM, to investigate these coupling processes during periods when the magnetic flux is transported through the tail via narrow fast flow channels, typically called bursty bulk flows (BBFs). We consider three relevant states of the magnetotail: immediately before the substorm's onset, during the expansion of the substorm, and during a steady magnetic convection (SMC) event. The number of flow channels increases, and they penetrate closer to the Earth during SMC. The IMF direction influences fast flows' location but not their orientation in the plasma sheet during this event. However, the dimension of fast flows and streamers do not depend on the IMF conditions and state of the magnetosphere.
DOI: 10.1002/2013ja019728
发表时间: 2014
期刊: Journal of Geophysical Research: Space Physics
影响因子: --
作者:
H. Connor;E. Zesta;D. Ober;J. Raeder
通讯作者: J. Raeder
两次连续极光向极边界增强的探空火箭研究
DOI: 10.1029/2011ja016428
发表时间: 2011
影响因子: --
作者:
M. Mella;K. Lynch;D. Hampton;H. Dahlgren;P. Kintner;M. Lessard;D. Lummerzheim;E. Lundberg;M. Nicolls;H. Stenbaek
通讯作者: H. Stenbaek
DOI: 10.1029/2009ja015168
发表时间: 2010-07
影响因子: --
作者:
L. Lyons;Y. Nishimura;Y. Shi;S. Zou;Hwajin Kim;V. Angelopoulos;C. Heinselman;M. Nicolls;K. Fornacon
通讯作者: L. Lyons;Y. Nishimura;Y. Shi;S. Zou;Hwajin Kim;V. Angelopoulos;C. Heinselman;M. Nicolls;K. Fornacon
稳定磁层对流事件:稳定性有多重要?
DOI: --
发表时间: 2014
期刊:
影响因子: --
作者:
A. DeJong
通讯作者: A. DeJong
亚暴爆发附近气球模式的极光特征:开放地球空间大气环流模型模拟
DOI: 10.1029/2011gm001200
发表时间: 2013
期刊: Journal of Geophysical Research: Space Physics
影响因子: --
作者:
J. Raeder;P. Zhu;Y. Ge;G. Siscoe
通讯作者: G. Siscoe