Map of Japan showing major plate boundaries (yellow lines) and significant earthquakes (dots) along with the location of the 17 January 1995 shock. Dots show located events during 1961-1994 with size proportional to magnitude and with color coded according to earthquake depth (see scale bar at right of figure). The 17 January earthquake (star) occurred on a northeast-trending strike-slip fault that branches off the Median Tectonic Line, a major right-lateral strike slip fault lying 200 km north of the subduction plate boundary on which great M=8 earthquakes occurred in 1944 and 1946 (rupture zones indicated by red lines).
This map was prepared by Grant Marshall, USGS.
