[M-IS09] Interdisciplinary studies on pre-earthquake processes

[MIS09-P02] Responses of Seismo-ionospheric Precursors in the Total Electron Content to Earthquake Magnitude and Depth in Taiwan and Japan during 1999–2024

*Kuan-Yu LEE¹, Jann-Yenq LIU^1,2,3, JIA-WEI ZHUANG¹ (1.Department of Space Science and Engineering, National Central University, Taiwan, 2.Center for Astronautical Physics and Engineering, National Central University, 3.Center for Space and Remote Sensing Research, National Central University)

The median base is employed to identify anomalies in the total electron content (TEC) on the Global Ionosphere Map (GIM) associated with earthquakes in Japan and Taiwan during 1999–2024. Z values of the one-sample test are used to find the characteristics of seismo-ionospheric precursors (SIPs) in the polarity of anomalous GIM TEC increases or decreases, lead days, durations, etc. for various earthquakes. The statistical significance of the SIP characteristics is further confirmed by the Receiver Operating Characteristic (ROC) curve analysis. Odds with SIPs versus earthquake magnitudes and depths are further computed to have a better understanding on the relationship between SIP occurrences and the preparation energy of earthquake preparation processes and underground structure.