M 4.6 earthquake: North Pacific Ocean (Japan) — May 5, 1981

M 4.6 earthquake: North Pacific Ocean (Japan) — May 5, 1981. Epicenter 879 km S of Hamamatsu, depth 431 km, 18:15 Local (1981-05-05 09:15 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (879 km S, Japan) — 27.119, 140.261

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