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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Latitudinal Variations of Daytime Periodic Ionospheric Disturbances From Beidou GEO TEC Observations Over China
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Latitudinal Variations of Daytime Periodic Ionospheric Disturbances From Beidou GEO TEC Observations Over China

机译：白天的纬度的变化周期从北斗GEO TEC电离层扰动观察在中国

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摘要

Using total electron content (TEC) data from a chain of Beidou geostationary satellite TEC receivers along ~110°E during 2016–2019, the local time, seasonal, and latitudinal occurrence characteristics of periodic TEC perturbation associated with medium scale traveling ionospheric disturbances (MSTIDs) are investigated. The results show that the daytime periodic ionospheric disturbances appear prominently in winter with dominant periods ~30–40 min. An interesting feature is that the latitudinal variations of periodic ionospheric disturbances show two occurrence peaks at higher and lower latitudes, with a minimum centering around 30°N-33°N, where almost no periodic ionospheric disturbance was detected under the threshold of absolute TEC perturbation greater than 0.3 TECU. Further, using two short-baseline GNSS receiver arrays at middle and low latitudes, the propagation characteristics of the periodic ionospheric disturbances were derived. The median values of propagation azimuth, phase velocity, and period of the ionospheric disturbances at middle (low) latitude are 153.1° (157.4°), 36.7 min (33 min), and 97.2 m/s (62.5 m/s), respectively, showing typical characteristics of MSTIDs. We surmise that the perturbation source and background electron density could play important roles in causing the latitudinal variation of daytime periodic ionospheric disturbances along 110°E.
机译：使用总电子含量(TEC)的数据北斗地球静止卫星TEC链接收器在~ 110°E 2016 - 2019年期间,当地时间、季节和纬度的发生周期性的TEC扰动的特征与中等规模相关的旅行电离层扰动(MSTIDs)调查。周期性的电离层扰动出现在冬天与占主导地位的时期~ 30 - 40分钟。一个有趣的特性是,纬度的变化的周期性电离层骚乱显示两个出现峰值较高和低纬度地区,最低定心大约30°N-33°N,几乎没有周期电离层扰动检测下绝对阈TEC扰动大比0.3特。在中、低纬度GNSS接收机阵列,周期的传播特性电离层扰动是派生的。价值观传播的方位,相速度,和电离层扰动的时期中间(低)纬度153.1°(157.4°),36.7(33分钟)和97 . 2 m / s (62 . 5 m / s),分别显示的典型特征MSTIDs。电子密度和背景可以玩在导致纬度的重要作用白天的周期性电离层的变化沿着110°E干扰。

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