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Fig. 4 | Earth, Planets and Space

Fig. 4

From: Rupture features of the 2010 Mw 8.8 Chile earthquake extracted from surface waves

Fig. 4

Apparent source duration varies with the station azimuth for periods of 60, 80, and 100 s. Two gaps at approximately 130° and 300° clearly divide the apparent source duration into two groups. After the rupture directivity analysis (Fig. 5), one is from the southern faulting (indicated by “S”), and the other is from northern faulting (indicated by “N”). The theoretical source duration curves are also plotted as in red and blue lines by using the derived fault parameters (Table 1) and an average phase velocity of 4.02 km/s for the three periods used

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