Pre-earthquake ionospheric anomalies registered by continuous GPS TEC measurements

J. Y. Liu, Y. J. Chuo, S. J. Shan, Y. B. Tsai, Y. I. Chen, S. A. Pulinets, S. B. Yu

研究成果: 雜誌貢獻期刊論文同行評審

427 引文 斯高帕斯(Scopus)


In this paper we examine pre-earthquake ionospheric anomalies by the total electron content (TEC) derived from a ground-based receiver of the Global Positioning System (GPS). A 15-day running median of the TEC and the associated inter-quartile range (IQR) are utilized as a reference for identifying abnormal signals during all of the 20M≧6.0 earthquakes in the Taiwan area from September 1999 to December 2002. Results show that the pre-earthquake ionospheric anomalies appear during 18:00-22:00 LT (LT=UT+8h) within 5 days prior to 16 of the 20 M≧6.0 earthquakes. This success rate of 80% (=16/20%) suggests that the GPS TEC is useful to register pre-earthquake ionospheric anomalies appearing before large earthquakes.

頁(從 - 到)1585-1593
期刊Annales Geophysicae
出版狀態已出版 - 2004


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