Fig. 4

Trans-Pacific Tsunami waveforms generated by the 2010 Maule (Chile) and 2011 Tohoku-Oki earthquakes. Left) Approximated tsunami raypaths (black lines) from the sources (yellow stars) and DART stations (red triangles). Right) Comparison of the observed (black lines) and two synthetic tsunami waveforms computed by the old (blue lines) and new (red lines) waveform simulation methods. For both earthquakes, the initial phase reversal and traveltime delay of the observed tsunami waveforms are found. With the new waveform synthetic method, the waveform discrepancy diminishes