M 5.0 earthquake: North Pacific Ocean (Japan) — May 10, 1978

M 5.0 earthquake: North Pacific Ocean (Japan) — May 10, 1978. Epicenter 792 km S of Hamamatsu, depth 493 km, 12:51 Local (1978-05-10 03:51 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (792 km S, Japan) — 27.802, 139.726

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