M 4.5 earthquake: North Pacific Ocean (Japan) — March 4, 1977

M 4.5 earthquake: North Pacific Ocean (Japan) — March 4, 1977. Epicenter 782 km S of Hamamatsu, depth 495 km, 10:25 Local (1977-03-04 01:25 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (782 km S, Japan) — 27.901, 139.774

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