Three components geomagnetic data analysis

After 921Chi-Chi earthquake, numerous magnetic anomaly signals were observed in the northern and southern parts of the Chelungpu fault, and it is coincided with the time of Chi-Chi earthquake occurred. It is generally believed that the magnetic minerals contained in the formation will be dispersed in space, causing changes in the geomagnetic field. This project analyzes the new 3-components geomagnetic observation network to understand the associated with seismicity and changed in tectonic stress.