Fig. 1
From: High-resolution 3D earthquake forecasting beneath the greater Tokyo area
Hypocenter data and plate configurations. a, b M ≥ 4.0 earthquake epicenters 1923–2015; the small circle colors change with every 20-km depth down to 100 km, and contours in b show every 10-km depth of the upper surfaces of the PHS and PAC Plates. c Perspective view from the west of the PAC (light blue) and PHS (pink) upper surfaces; dark blue dots are earthquakes of M2 and larger 2000–2018. The depth scale is exaggerated