M 4.6 earthquake: North Pacific Ocean (Japan) — February 7, 1987

M 4.6 earthquake: North Pacific Ocean (Japan) — February 7, 1987. Epicenter 847 km S of Hamamatsu, depth 479 km, 13:12 Local (1987-02-07 04:12 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (847 km S, Japan) — 27.41, 140.258

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