Design and implementation of ionospheric multi-parameter anomaly monitoring system in Sichuan-Yunnan region
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摘要: 介绍了川滇地区电离层多参量异常监测系统的设计思路与功能实现，并将该系统应用于2019年6月17日四川长宁MS6.0地震的监测试验。结果表明：该系统实现了全球和中国区域垂直总电子含量VTEC、站点VTEC和F2层临界频率foF2异常变化的实时监测，有助于开展示范性地震电离层异常监测工作，其图形及数据结果可为地震-电离层异常扰动判识提供佐证，为川滇地区地震监测预报提供电离层前兆信息支持。
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关键词:
- 电离层异常 /
- 垂直总电子含量VTEC /
- F2层临界频率foF2
Abstract: This paper introduced the design ideas and function implementation of ionospheric multi-parameter anomaly monitoring system in Sichuan-Yunnan region, and then applied the system to monitoring test of the MS6.0 earthquake on June 17, 2019 in Changning, Sichuan. The results show that the system realizes the real-time monitoring of abnormal changes such as global and China regional VTEC, site VTEC and foF2, which is helpful to carry out the demonstrative seismic-ionospheric anomaly monitoring. The graphic and data results can provide evidences for the identification of seismic-ionospheric anomalous disturbance, and ionospheric precursor information for earthquake monitoring and prediction in Sichuan-Yunnan region. -
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图 1 川滇地区GNSS和垂测台站分布图
Figure 1. Distribution of GNSS and vertical ionosonde stations in Sichuan-Yunnan region
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图 2 川滇地区电离层多参量异常监测系统的总体结构图
Figure 2. Overall structure diagram of the ionospheric multi-parameter anomaly monitoring system in Sichuan-Yunnan region
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图 3 川滇地区电离层多参量异常监 测系统功能图
Figure 3. The function diagram of the ionospheric multi-parameter anomaly monitoring system in Sichuan-Yunnan region
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图 6 系统主界面
（a） 异常分布子系统；（b） 时序曲线子系统；（c） 监测平台
Figure 6. Main system interfaces
（a） Anomaly distribution subsystem；（b） Time series curve subsystem；（c） Monitoring platform
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图 7 异常分布子系统关于长宁地震前2019年6月14日12:00 UT全球（a）和中国区域（b）VTEC异常分布图形结果，图中红色圆点代表震中
Figure 7. Global （a） and China regional （b） VTEC anomaly distribution graphic results of the anomaly distribution subsystem at 12:00 UT on June 14，2019 before Changning earthquake，where red dots represent the epicenter
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图 8 时序曲线子系统图形结果（2019年6月1—20日）
（a） 四川宁南站点VTEC时序曲线；（b） 云南腾冲站点foF2时序曲线；（c） 空间参数时序曲线，图中红色直线为参数阈值
Figure 8. Graphic results of time series curve subsystem （June 1 to June 20，2019）
（a） VTEC time series curves of Ningnan station in Sichuan Province；（b） foF2 time series curves of Tengchong station in Yunnan Province；（c） Time series curves of spatial parameter，where all red lines are parameter thresholds
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