M 4.6 earthquake: North Pacific Ocean (Japan) — December 13, 1973

M 4.6 earthquake: North Pacific Ocean (Japan) — December 13, 1973. Epicenter 807 km S of Yokohama, depth 53 km, 11:04 Local (1973-12-13 01:04 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (807 km S, Japan) — 28.629, 142.601

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