M 4.7 earthquake: North Pacific Ocean (Japan) — January 30, 1983

M 4.7 earthquake: North Pacific Ocean (Japan) — January 30, 1983. Epicenter 800 km S of Yokohama, depth 33 km, 20:13 Local (1983-01-30 10:13 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (800 km S, Japan) — 28.7, 142.612

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