川滇地区电离层垂测站震例数据分析  

Analysis of Seismic Data of Ionospheric Vertical Station in Sichuan and Yunnan

作　　者：刘江[1] 陈聪[1] 何福秀 杨洋[1] LIU Jiang;CHEN Cong;HE Fuxiu;YANG Yang(Sichuan Earthquake Agency,Sichuan Chengdu 610041,China)

机构地区：[1]四川省地震局,四川成都610041

出　　处：《四川地震》2020年第2期35-38,共4页Earthquake Research in Sichuan

基　　金：中国地震局震情跟踪项目(2020010406);青年科学基金项目(41704014);四川省地震局"川滇区域GNSS大地构造物理及壳幔动力研究"创新团队(201903)。

摘　　要：基于川滇地区电离层垂测普洱站和乐山站记录数据,对2018年云南墨江MS5.9和2019年四川长宁M S6.0地震震前电离层特征参数f0F2异常数据进行处理分析。结果显示:在云南墨江地震前第3天,普洱站上空出现显著电离层异常扰动现象,特征参数f0F2相对背景阈值的最大异常扰动达64%;在四川长宁地震前第4天,乐山站上空也出现明显电离层异常扰动现象,特征参数f0F2相对背景阈值的最大异常扰动达58%。这些扰动现象很可能属于地震前兆异常。Based on the data recorded at the Pu er and Leshan stations in Sichuan and Yunnan,this paper mainly analyzed the variation of the ionospheric f0F2 before the Yunnan Mojiang MS5.9 earthquake in 2018 and the Sichuan Changning MS6.0 earthquake in 2019.The results show that on the 3rd day before the Mojiang earthquake in Yunnan,there was a significant anomalous disturbance of the ionosphere over the Pu er station,and the maximum anomalous disturbance of the characteristic parameter f0F2 relative to the background threshold reached 64%;on the 4th day before the Changning earthquake in Sichuan,there is obviously abnormal disturbance of the ionosphere,and the maximum abnormal disturbance of the characteristic parameter f0F2 reaches 58%.These disturbances are likely to be earthquake precursor anomalies.

关 键 词：电离层垂测 电离层异常 F0F2 

分 类 号：P228.4[天文地球—大地测量学与测量工程] P315.727[天文地球—测绘科学与技术]