Correlation Analysis Between Ionosphere Anomaly and Earthquake

Abstract

This document took the long sequence of IGS ionospheric VTEC (vertical total electron content unit) products as original data, based on the theory research of various abnormally detection methods, we could select the optimal method to process VTEC products, combined with earthquake cases of which the magnitude greater than Ms5.0 in global range from 2003 to the present. According to the principle of mathematical statistics, we found the relationship between the abnormal of ionosphere and the factors of earthquakes. Through calculating the correlation coefficient and the single factor variance analysis between earthquake factors and the ionosphere anomalies, we not only confirmed that the earthquake has an effect on ionosphere anomalies, but also proved the conclusion that the magnitude has the positive correlation with the positive ionosphere anomalies, and under the condition of single factor analysis, we confirmed that the magnitude made a significant impact on the ionosphere anomalies before the earthquake happened.