M 5.2 earthquake: North Pacific Ocean (Japan) — December 30, 1977

M 5.2 earthquake: North Pacific Ocean (Japan) — December 30, 1977. Epicenter 691 km S of Hamamatsu, depth 529 km, 04:45 Local (1977-12-29 19:45 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (691 km S, Japan) — 28.529, 138.367

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