M 4.6 earthquake: North Pacific Ocean (Japan) — October 29, 1981

M 4.6 earthquake: North Pacific Ocean (Japan) — October 29, 1981. Epicenter 531 km S of Hamamatsu, depth 385 km, 11:57 Local (1981-10-29 02:57 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (531 km S, Japan) — 30.087, 139.103

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