M 5.1 earthquake: North Pacific Ocean (Japan) — August 23, 1975

M 5.1 earthquake: North Pacific Ocean (Japan) — August 23, 1975. Epicenter 371 km S of Hamamatsu, depth 399 km, 04:36 Local (1975-08-22 19:36 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (371 km S, Japan) — 31.389, 138.068

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