Fig. 1
From: Focal mechanisms and stress field in the Nobi fault area, central Japan
Map showing the Nobi fault area. a Bold orange, green, and blue lines are the Nukumi, Neodani, and Umehara faults, respectively. Thin lines are other active faults. Closed triangles show active volcanoes. Red lines show political prefecture boundaries. b Study area and plate configuration. PA: Pacific plate, PH: Philippine Sea plate, EU: Eurasian plate, and NA: North American plate. The two arrows indicate plate motions of PA and PH relative to EU. c Temporary and permanent seismographic stations used in this study are indicated by open squares and open triangles, respectively. The rectangle indicates the area shown in Fig. 3