M 4.8 earthquake: North Pacific Ocean (Japan) — December 31, 1977

M 4.8 earthquake: North Pacific Ocean (Japan) — December 31, 1977. Epicenter 764 km S of Hamamatsu, depth 424 km, 17:17 Local (1977-12-31 08:17 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (764 km S, Japan) — 28.047, 139.672

EarthquakeLive.org