Depletion and Traveling Ionospheric Disturbances Generated by Two Launches of China's Long March 4B Rocket
Depletion and Traveling Ionospheric Disturbances Generated by Two Launches of China's Long March 4B Rocket
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中国长征四号乙运载火箭两次发射产生的损耗和行进电离层扰动
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
zhang Keke
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作者：
Liu Haitao;Ding Feng;Yue Xinan;Zhao Biqiang;Song Qian;Wan Weixing;Ning Baiqi;zhang Keke
利用中国902个全球导航卫星系统台站的总电子含量（TEC）数据，分析了长征四号B在中国太原两次类似发射（即2013年12月9日发射的中巴地球资源卫星3号和2014年12月7日发射的中巴地球资源卫星4号）后的电离层响应。通过采用一种能有效检测TEC损耗的方法，对TEC序列进行滤波，并建立二维扰动图，发现两次发射的电离层扰动基本相同。我们确定了三种类型的干扰后，两次发射：耗尽，冲击波相关的电离层扰动（TID），声波相关的圆形TID。耗尽的建立时间受到排入电离层的排气量的影响，其幅度为1012 TEC单位（TECU; 1 TECU = 1016 el/m2）。在电子耗尽形成后，它向西漂移了大约300公里。与激波有关的TID只能在弹道附近观察到，反映了火箭的加速度，振幅为1.06 TECU。在发射场东南部观测到了声波相关的圆形TID。从观测结果来看，这类TID包含三组波列，速度为10900 m/s，周期为103.8 min。三组TID的振幅分别为0.065、0.045和0.02 TECU。
Using total electron content (TEC) data from 902 global navigation satellite system stations over China, we analyzed the ionospheric responses following two similar launches of the Long March 4B from Taiyuan, China, that is, China-Brazil Earth Resources Satellite 3 launched on 9 December 2013 and China-Brazil Earth Resources Satellite 4 launched on 7 December 2014. By adopting a method that can detect TEC depletion effectively, filtered TEC series, and built two-dimensional disturbances map, we found that the ionospheric disturbances of these two launches were almost the same. We identified three types of disturbances following both launches: depletions, shock wave-related traveling ionospheric disturbances (TIDs), and acoustic wave-related circle TIDs. The buildup time of depletion was influenced by the amount of exhaust expelled into the ionosphere with an amplitude of ∼12 TEC unit (TECU; 1 TECU = 1016 el/m2). After the electron depletion was formed, it drifted westward for approximately 300 km. The shock wave-related TIDs can only be observed near the trajectory and reflect the acceleration of the rockets with an amplitude of ∼0.6 TECU. The acoustic wave-related circle TIDs were observed at the southeast of the launch site. From our observations, this type of TID includes three groups of wave trains, and the speed and period are ∼900 m/s and ∼3.8 min, respectively. The amplitudes of the three groups of TIDs are ∼0.065, ∼0.045, and ∼0.02 TECU.