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Earth, Planets and Space
Fig. 1 | Earth, Planets and Space

Fig. 1

From: Inelastic deformation zone in the lower crust for the San-in Shear Zone, Southwest Japan, as observed by a dense GNSS network

Fig. 1

GNSS velocities in and around the San-in Shear Zone from January 2014 to December 2018 with respect to station 0344 (red diamond). Blue arrows denote GEONET data, while red arrows Kyoto University data. Gray arrows represent outliers. Thin black lines denote active Quaternary fault traces (Research Group for Active Faults of Japan 1991). Violet dots denote crustal seismicity (depth < 30 km) from 1998 to 2018. Green triangles are active volcanoes within the SSZ. Stars represent the epicenters of the 1943 Tottori, the 2000 Western Tottori and the 2016 Central Tottori earthquakes. Focal mechanisms for the 2000 and the 2016 events are also shown within the figure. The inset figure shows the location of the study area with respect to the Japanese Islands. Three pink rectangles from A–A′ to C–C′ indicate locations of velocity profiles in Fig. 2. Ticks on lines in the rectangles are plotted with an interval of 50 km. Orange rectangles denote the optimum widths of the ductile zone in the lower crust

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