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Figure 1

From: An inhomogeneous across-slab conduit controlled by intraslab stress heterogeneity in the Nankai subduction zone

Figure 1

Seismicity in the Philippine Sea slab beneath the Shikoku district and the Kii Peninsula. (a) Focal mechanism solutions in the Philippine Sea slab beneath the Shikoku district and the Kii Peninsula; the colour of focal spheres indicates hypocentre depths. (b) Red circles and blue squares indicate P- and T-axes of the solutions, respectively. In a, grey dots indicate epicentres of nonvolcanic tremors in southwestern Japan for the period 2001 to 200932, depth contours indicate the upper surface of the Philippine Sea plate33, and arrow indicates the convergence vector between the Philippine Sea Plate (PSP) and the Japanese Islands (Eurasian Plate, EUP)34. PP, Pacific Plate.

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