Abstract
The 2011 off the Pacific coast of Tohoku Earthquake (M 9.0) is the greatest earthquake in Japan. Analysis of GPS network, such as GEONET by Geospatial Information Authority of Japan, has revealed the crustal deformation distribution due to the earthquake. On the other hand, the crustal deformation distribution can be estimated from the displacement waveform calculated by integrating the accelogram observed by strong motion seismometer. This method would be used complementary with GPS analysis. In this study, we calculated the crustal deformation distribution due to the 2011 off the Pacific coast of Tohoku Earthquake from the accelograms recorded on strong motion observation network K-NET and KiK-net by National Research Institute for Earth Science and Disaster Prevention. The crustal deformation distribution calculated from strong motion records is consistent with that by GPS observation. In addition, the displacement waveforms estimated from strong motion records are in good agreement with that from 1 Hz GPS analysis.
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