M 4.6 earthquake: North Pacific Ocean (Japan) — December 9, 1974

M 4.6 earthquake: North Pacific Ocean (Japan) — December 9, 1974. Epicenter 578 km SE of Yokohama, depth 33 km, 23:36 Local (1974-12-09 14:36 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (578 km SE, Japan) — 30.778, 142.38

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