Fig. 1
From: Long-term slow slip event detected beneath the Shima Peninsula, central Japan, from GNSS data
Map of the study area in southwest Japan. a Location and plate tectonic setting. Heavy curves here and on the main map indicate plate boundaries. b Locations in the Nankai Trough study area. The dashed rectangle encloses the fixed region. Large numbered dots indicate GNSS stations. Heavy lines connecting two stations represent baselines for measurement of length changes. Small dots numbered 1–60 show the approximate location of the 25 km depth contour on the Nankai Trough subduction interface. The oblique rectangle in western Shikoku indicates an example of 100 km × 50 km area centered on dot 10