Fig. 4From: Double seismic zone within the ridge-shaped slab beneath southwest JapanDistributions of T -axes and focal mechanisms of the intra-slab earthquakes. Distributions of T -axes for the events occurred in the upper plane of the DSZ, and focal mechanisms (a–e) of the events occurred in the lower plane of the DSZ are shown. Open circles and triangles are the same as in Fig. 3. Solid and broken curves are the same as in Fig. 1.Back to article page