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Fig. 6 | Earth, Planets and Space

Fig. 6

From: Configuration and structure of the Philippine Sea Plate off Boso, Japan: constraints on the shallow subduction kinematics, seismicity, and slow slip events

Fig. 6

Distribution and focal mechanisms of low-angle thrust-faulting earthquakes. The light blue and magenta beach balls indicate earthquakes associated with PAC and PHS subduction, respectively. The focal mechanisms, shown in black and gray, are earthquakes inconsistent with subduction. a Lines a–a′ and b–b′ define the projected lines onto the cross-sections. The brown and blue lines indicate the depths of the upper boundaries of the PAC (Nakajima et al. 2009) and PHS (Uchida et al. 2010), respectively. b Cross-section along line a–a′. The focal mechanisms north of the northeastern limit of the PHS are plotted. c Cross-section along line b–b′. The focal mechanisms south of the northeastern limit of the PHS are plotted

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