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利用武汉电离层观象台1985-1990年间的高频多普勒台阵观测资料,采用射线追踪方法,对观测到的电离层重力波扰动(TID)进行了定源研究,从统计上分析了扰动源的地理分布、季节变化以及与地磁活动的关系.结果表明,中国中部上空TID的激发源主要出现在春夏季的四川盆地和冬半年的山口地区.扰动的激发可能与青藏高原地形隆起对这两个地区的气象活动的影响有关.此外,有少部分尺度较大的扰动出现在冬半年,它们可能来自极区.
Using the observation data of high frequency Doppler wave from 1985 to 1990 in Wuhan ionospheric observatory, the ray tracing method was used to study the observed ionospheric gravity wave perturbation (TID), and the statistical analysis of the perturbation sources Geographical distribution, seasonal variations, and geomagnetic activity. The results show that the excitation sources of TID in central China mainly appear in the Sichuan basin in spring and summer and the Yamaguchi region in winter. The disturbance may be related to the influence of the Tibetan Plateau uplift on the meteorological activities in these two areas. In addition, a few large-scale disturbances occur in the winter half year, and they may come from polar regions.