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Earth, Planets and Space
Fig. 5 | Earth, Planets and Space

Fig. 5

From: Driving stress and seismotectonic implications of the 2013 Mw5.8 Awaji Island earthquake, southwestern Japan, based on earthquake focal mechanisms before and after the mainshock

Fig. 5

Focal mechanism solutions determined in this study (lower hemisphere of equal-area projection). a Pre-shock focal mechanism solutions, where different colors are used to differentiate reverse (green), strike–slip (red), and normal (blue) faulting mechanisms. A triangle diagram (Frohlich 1992) with the color scale is presented in the right, where each focal mechanism is plotted by open circles. The number within each set of parentheses shows the number of events for that faulting mechanism. Beach balls with an asterisk in the upper right indicate a reverse-faulting earthquake. b Distribution of aftershock focal mechanisms for each faulting mechanism. The map area corresponds to the red rectangle in a. The hypoDD location of the mainshock is shown by a yellow star

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