Fig. 7
From: Stress field in northeastern Japan and its relationship with faults of recent earthquakes
Distribution of F-net focal mechanism solution in the Tohoku District inland area. Each focal mechanism is plotted using the lower hemisphere projection. A, B, and C The events that occurred from January 1, 1997 to March 10, 2011 (before the Tohoku-Oki earthquake). D, E, and F The events that occurred from March 11, 2011 to December 31, 2019 (after the Tohoku-Oki earthquake). A and D, B and E, and C and F Events’ distribution that occurred in depth 0–10 km, 10–20 km, and 20–30 km, respectively