M 4.8 earthquake: North Pacific Ocean (Japan) — November 20, 1983

M 4.8 earthquake: North Pacific Ocean (Japan) — November 20, 1983. Epicenter 318 km NE of Kushiro, depth 42 km, 15:18 Local (1983-11-20 05:18 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (318 km NE, Japan) — 44.28, 147.887

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