Fig. 8
From: A short history of Japanese historical seismology: past and the present
Hypocenters of 134 examined earthquakes in the period from 1586 to 1872. For M7.5 or larger events, source regions are shown except for 1605 and 1614 events, of which source areas are unclear and tentative epicenters were shown in the eastern part of the Nankai trough. The symbol size is larger for a larger M. The symbol color is warmer for a shallower event