Fig. 1
From: Focal mechanisms and stress field in the Atotsugawa fault area, central Honshu, Japan
Map showing Atotsugawa fault area. (a) Orange, green, yellow, and blue bold lines are the Atotsugawa, the Ushikubi, the Miboro, and the Mozumi-Sukenobu faults, respectively. Other thin lines are other active faults. Closed triangles show active volcanoes. HA: Hakusan volcano, and TP: Toyama plain. The name of prefectures are indicated in rectangles, and red lines show their boundaries. (b) The study area and the plate configuration. PA: Pacific plate, PH: Philippine Sea plate, EU: Eurasian plate, and NA: North American plate. Two arrows indicate the plate motion of PA and PH relative to EU. (c) Seismographic stations used in this study. A rectangle is an area shown in Fig. 3.