M 4.6 earthquake: North Pacific Ocean (Japan) — December 10, 1990

M 4.6 earthquake: North Pacific Ocean (Japan) — December 10, 1990. Epicenter 635 km S of Hamamatsu, depth 524 km, 08:33 Local (1990-12-09 23:33 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (635 km S, Japan) — 29.024, 138.205

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