M 4.7 earthquake: North Pacific Ocean (Japan) — August 23, 1973

M 4.7 earthquake: North Pacific Ocean (Japan) — August 23, 1973. Epicenter 838 km S of Hamamatsu, depth 171 km, 14:38 Local (1973-08-23 05:38 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (838 km S, Japan) — 27.605, 140.642

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