M 5.4 earthquake: North Pacific Ocean (Japan) — March 1, 1983

M 5.4 earthquake: North Pacific Ocean (Japan) — March 1, 1983. Epicenter 518 km S of Yokohama, depth 33 km, 18:02 Local (1983-03-01 09:02 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (518 km S, Japan) — 31.093, 141.622

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