M 4.6 earthquake: North Pacific Ocean (Japan) — August 22, 1984

M 4.6 earthquake: North Pacific Ocean (Japan) — August 22, 1984. Epicenter 728 km S of Hamamatsu, depth 529 km, 12:38 Local (1984-08-22 03:38 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (728 km S, Japan) — 28.252, 138.914

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