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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Vertical and meridional equatorial ion flows observed by CINDI during the 26 September 2011 storm
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Vertical and meridional equatorial ion flows observed by CINDI during the 26 September 2011 storm

机译:垂直和经向赤道离子流动观察到辛迪在2011年9月26日风暴

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[1] The equatorial ionosphere is generally shielded from outside electrical fields except during large geomagnetic storms. During these storms, the polar region electric fields can temporarily extend to the equatorial regions in what is called a penetration field. During the subsequent recovery period, a disturbance dynamo is produced with an enhanced electric field with the opposite orientation relative to the penetration field. The penetration electric field would be oriented toward the east on the dayside causing an excess upward E × B motion of the equatorial ionospheric ions. The disturbance dynamo electric field would have the opposite orientation, westward on the dayside, producing an excess downward E × B motion of the equatorial ionospheric ions. The moderate storm (minimum Dst =-103 nT) on 26 September 2011 is examined using ion flow data from the Coupled Ion-Neutral Dynamics Investigation (CINDI) thermal plasma instrument package on the Communication/ Navigation Outage Forecast System (C/NOFS) spacecraft on the dayside and early evening local times to look for examples of these flows. Despite what should have been a large enough storm to produce penetration fields and upward flows, a detailed examination of the observed flows from this storm shows only enhanced downward flows before the storm, during the main phase, and through the recovery.
机译:[1]赤道电离层一般屏蔽外界电场除外在大地磁风暴。风暴,极地地区电场暂时延长的赤道地区所谓渗透。随后的复苏时期,扰动发电机产生的电场增强相反的方向相对领域渗透。将面向东的光面造成过度上升的E×B运动赤道电离层离子。发电机电场会相反取向,向西的光面,生产过度向下E×B赤道的运动电离层离子。= -103元)2011年9月26日检查使用Ion-Neutral离子流的数据耦合(辛迪)热等离子体动力学调查沟通/仪器包导航故障预报系统(C / nof)宇宙飞船的光面和傍晚当地次去寻找这些流的例子。尽管应该是一个足够大的风暴产生渗透字段和向上流,一个详细的检查这场风暴流显示只有增强暴风雨前的向下流动,在主阶段,通过经济复苏。

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