Fig. 7.
Time–distance diagram for seismic source 1 obtained from the filtered HMI dopplergram without (left) and with theoretical curve (right) showing the acoustic wave ridge. The start (zero) time on the Y-axis is 11:29.04 UT, leading to the seismic response start at 11:55:37 UT. The grey colour bars on the right show the background Doppler velocities in m/s.
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