Fig. 1.From: Real-time W phase inversion during the 2011 off the Pacific coast of Tohoku EarthquakeW phase preliminary amplitude fit for the 2011 Tohoku Earthquake. A polar representation is used: the angle and radius correspond respectively to the station azimuth and amplitude value. The continuous line represents the result of the regression determined from W phase amplitudes. The updated W phase centroid moment tensor solution shown in Fig. 2 is displayed for comparison.Back to article page