| Summary: | 碩士 === 國立中央大學 === 地球物理研究所 === 100 === Taiwan established a network of geomagnetic stations since 2002. This network recorded geomagnetic with 1 sample per second. 2011/3/11 13:46:23(UTC+8), a large earthquake occurred in north-east Japan. After the earthquake, a special geomagnetic fluctuation was recorded by the Taiwan’s geomagnetic network. After compare with the geomagnetic record in the other world-wide geomagnetic station, we can confirm this geomagnetic fluctuation is not cause by an external source. This fluctuation is similar with the record in Sumatra earthquake (Iyemori, 2005).The event was determined into the Acoustic-Gravity wave trigger by the Rayleigh wave. In our study, we collect the Doppler Radar System and Seismic data to compare with the geomagnetic fluctuation. Try to find out the relation between the earthquake event and the geomagnetic fluctuation.
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