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
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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
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Murphy, Kyle
中科院分区:
文献类型:
--
作者:
Ferdousi, Banafsheh;Raeder, Joachim;Zesta, Eftyhia;Cramer, William;Murphy, Kyle
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.
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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
影响因子:
--
作者:
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H. Stenbaek
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
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
A. DeJong
通讯作者:
A. DeJong
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