Fig. 8From: Improvement in the accuracy of expected seismic intensities for earthquake early warning in Japan using empirically estimated site amplification factors(a) Example of the abnormal seismic intensity distribution in Tohoku district of Japan. A star indicates the epicenter of the intra-plate earthquake (Mj 6.8, Depth 108 km). Dotted lines indicate equidistant lines from the trench axis. Dashed-dotted line indicates volcanic front. (b) Schematic view of vertical cross section perpendicular to the trench axis for Q structure at subduction (Morikawa et al. (2003)). Stars indicate hypocenters. Arrows indicate ray paths from deep earthquakes to stations.Back to article page