Two classes of earthward fast flows in the plasma sheet
Two classes of earthward fast flows in the plasma sheet
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DOI：
10.1029/2007ja012456
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发表时间：
2008-02
影响因子：
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通讯作者：
J. Shue;A. Ieda;A. Lui;G. Parks;T. Mukai;S. Ohtani
中科院分区：
文献类型：
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作者：
J. Shue;A. Ieda;A. Lui;G. Parks;T. Mukai;S. Ohtani
[1]在这项研究中，我们首先确定了向地球的等离子体片快速流动的Geotail等离子体和磁场的标准V x > 300 km/s，其中V x是垂直于环境磁场的等离子体流的X分量。然后，我们估计的变化率的夜侧极光功率的快速流动的过程中使用极地紫外成像仪极光图像。结果表明，在地磁场的X分量为Vx，Z分量为Bz的情况下，观测到68个向地快流，速度为10000 mV/m。结果表明，V_（max）比V_（max）Bz更能区分等离子体片中的两类向地快流。
[1] In this study we first identify earthward plasma sheet fast flows from Geotail plasma and magnetic fields with a criterion of V⊥x > 300 km/s, where V⊥x is the X component of the plasma flow perpendicular to the ambient magnetic field. We then estimate rates of change of the nightside auroral power over the courses of the fast flows using Polar Ultraviolet Imager auroral images. It is found that 68 earthward fast flows observed at ∣Y∣ 2 mV/m for an identification of fast flows, where Vx is the X component of the plasma flow and Bz is the Z component of the geomagnetic field. It is found that V⊥x is a better parameter than VxBz to differentiate the two classes of earthward fast flows in the plasma sheet.