Fig. 6
From: Rapid estimation of tsunami earthquake magnitudes at local distance
Examples of multiband amplitude distributions of the 2003 Tokachi-oki earthquake in relation to seismic wave period. The black bars indicate observed peak displacements of the bandpass-filtered seismic record, and the red bars indicate those of the synthetic records fitted to the observation. The length of each bar shows the passband range. Each graph shows comparison for an assumed source duration. The estimate magnitude for each duration is indicated at the upper left of the graph. Duration of 25 s showed the best fit in this case