The distinction of Tōnankai earthquakes , and the Tōnankai region itself , is a recent one , dating to the 1944 Tōnankai earthquake . Nankai ( Southern Sea ) and Nankaidō ( Southern Sea Way ) , and likewise Tōkai ( Eastern Sea ) and Tōkaidō ( Eastern Sea Way ) are historical names and divisions of Japan , but following the 1944 earthquake , it was recognized that there were distinct segments in between these , which could independently rupture , and thus a different category was created
1944 Tōnankai earthquake
1944 Tōnankai earthquake
Tōnankai earthquakes