A statistical investigation of pre-earthquake ionospheric TEC anomalies  

作　　者：Zhu Fuying Wu Yun Zhou Yiyan Lin Jian 

机构地区：[1]Institute of Seismology, CEA, Wuhan 430071, China [2]Crustal Movement Laboratory, Wuhan 430071, China [3]Rearch Center of Wuhan University, Wuhan 430079, China

出　　处：《Geodesy and Geodynamics》2011年第1期61-65,共5页大地测量与地球动力学（英文版）

基　　金：supported by the National Key Technology R&D Program(2008BAC35B02);Director Teawdotion of Institute of seismology.CEA(IS200926039)

摘　　要：Previous researches show that the total electron content （TEC） in the ionospheric exhibits anomalous disturbances a few days or hours prior to earthquakes. The paper used TEC data from Internet GPS Service （ IGS）, and examined 50 earthquakes of magnitude Ms ≥ 7.0 during 2007 - 2009 worldwide. The result shows significant anomalous increases and decreases about 7 days prior to 94% of the earthquakes.Previous researches show that the total electron content （TEC） in the ionospheric exhibits anomalous disturbances a few days or hours prior to earthquakes. The paper used TEC data from Internet GPS Service （ IGS）, and examined 50 earthquakes of magnitude Ms ≥ 7.0 during 2007 - 2009 worldwide. The result shows significant anomalous increases and decreases about 7 days prior to 94% of the earthquakes.

关 键 词：EARTHQUAKE Total Electron Content（TEC） statistical investigation ANOMALY 

分 类 号：P352[天文地球—空间物理学] P315.7[天文地球—地球物理学]