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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Interesting Equatorial Plasma Bubbles Observed by All-Sky Imagers in the Equatorial Region of China
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Interesting Equatorial Plasma Bubbles Observed by All-Sky Imagers in the Equatorial Region of China

机译：有趣的赤道观察到等离子体泡沫次全天成像系统赤道地区的中国

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This paper reports some interesting equatorial plasma bubbles (EPBs) on 4 and 5 October 2013 and 29 and 30 September 2013 observed by two all-sky imagers located in the magnetically equatorial region of Hainan (19.5°N; 9.5° geomagnetic latitude) and Guiping (23.8°N; 13.9° geomagnetic latitude), China. The case of 4 and 5 October 2013 shows the following: (1) EPBs had planar wave-like structures and their wavefronts were parallel to each other before midnight. (2) The angle between the wavefronts of those EPBs and the geomagnetic meridian were ~30°. (3) Near midnight, the higher-latitude part of one EPB suddenly began to rotate with a large eastward zonal drift, resulting in an unusual C-shaped EPB that was observed for the first time by an all-sky imager. (4) After midnight, one EPB merged into another EPB and formed an integrated EPB. The other EPB case on 29 and 30 September 2013 shows the following: (1) The images captured the full evolution processes of an “I” shaped EPB with an angle of ~30° with respect to the geomagnetic meridian. The imagers also observed “S” and “Y” shaped EPBs. (2) The change of EPBs’ shape was directly related to the change of EPBs’ zonal drift velocities. (3) The angle between the I-shaped EPBs and the geomagnetic meridian was likely caused by the change of the latitudinal gradient of zonal neutral wind velocities and ionospheric conductivity. (4) The zonal velocity of each branch of the “Y” shape EPB was different, which could be related to the polarization electric fields within each branch.
机译：本文报道一些有趣的赤道等离子体泡沫(epb) 2013年10月4和52013年9月29日和30日观测到两次全天成像系统位于磁赤道海南地区(19.5°N;纬度)和Guiping(23.8°N;中国纬度)。2013显示如下:(1)epb的平面波结构和他们的波阵面时在午夜之前相互平行。波阵面时的组件和之间的角度地磁子午线~ 30°。午夜,高纬度组件的一部分突然开始旋转,向东纬向漂移,导致一个不寻常的组件位于脑部这是第一次观察到的次全天成像仪。合并到另一个EPB,形成一个集成的环境保护局。2013显示如下:(1)捕获的图像整个进化过程的一个“我”组件的形状~ 30°的角度的地磁子午线。“S”和“Y”形组件。形状的变化直接关系到组件的纬向漂移速度。工字形的环境保护局和地磁子午线可能由纬向的变化引起的梯度的纬向中性风速度和电离层电导率。每个分支的“Y”型环境保护局不同,这可能是相关的极化电场在每个分支。

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