Abstract In this study, multiple data sets from Beidou geosynchronous Earth orbit (GEO) satellite, ionosonde, magnetometer, Swarm satellite, and meteor radar were used to investigate an anomalous disturbance of the ionosphere in East Asia on 1 November 2016. During 03:00–08:00 universal time (UT), the total electron content (TEC) observed by the Beidou GEO satellite decreased by up to 8.17% at low latitudes and increased by up to 140.19% at middle to low latitudes in East Asia compared to the average TEC on the reference days. The F2 peak electron density (NmF2) measured by ionosondes decreased by 16.00% at Sanya (109.4°E, 18.3°N) and increased by 51.96% and 53.97% at Wuhan (114.4°E, 30.5°N) and Shaoyang (111.3°E, 27.1°N), respectively. The equatorial electric field (EEF) observed by the Swarm satellite at 06:59 UT on 1 November was approximately 77.57% higher than on 4 November. The variations of equatorial electrojet near 100°E and 120°E on 1 November presented an east‐west asymmetry in which there was a significant enhancement in the east while there was no obvious increase in the west. The TEC enhancement derived by the Center for Orbit Determination in Europe also showed the same east‐west asymmetry in the two longitudes. Based on the comprehensive analysis of multiple observational data, the increase in EEF caused the ionospheric TEC and NmF2 to decrease at low latitudes and increase at middle to low latitudes in East Asia during 03:00–08:00 UT on 1 November 2016. The lower atmospheric tidal forcing could contribute to the enhancement of the EEF.
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机译：摘要在这项研究中,从多个数据集北斗同步轨道(GEO)卫星,ionosonde,磁强计,群卫星、流星雷达被用来调查的异常扰动2016年11月1日电离层在东亚。在03:00-08:00世界时(UT),总数是多少北斗电子内容(TEC)观察到的地理卫星在低下降了8.17%纬度和增加了140.19%中间在东亚比低纬度地区天的平均TEC参考。电子密度峰值(NmF2)来衡量在三亚ionosondes下降了16.00%(109.4°E,18.3°N)和增加了51.96%和53.97%分别为27.1°N)。字段(EEF)观察到的卫星群06:59 UT 11月1日大约是77.57%高于11月4日。赤道附近的电喷流100°E和120°E 111月提出一个东西不对称哪有显著提高东虽然没有明显的增加西方。在欧洲也显示轨道计算同样的东西两个经度不对称。基于多个的综合分析观测数据,EEF的增加引起的电离层TEC和NmF2减少在低纬度和增加在中低纬度地区11月1日在东亚03:00-08:00 UT2016. EEF的提高作出贡献。
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