Fig. 1
From: Localized extensional tectonics in an overall reverse-faulting regime, Northeast Japan
a Location and shaded relief maps, and b generalized structure of the Southeast Tohoku district. Yellow dots the epicenters of earthquakes identified by the JMA that occurred from March, 2011 to August, 2012 at depths shallower than 20 km. Red star and focal mechanism symbols (F-net catalog from NIED) indicate the M w 6.7 Iwaki earthquake, on April 11. Active faults are also shown (dark blue lines) (after Nakata and Imaizumi 2002)