M 4.7 Earthquake: North Pacific Ocean (Japan) — May 18, 1977

M 4.7 Earthquake: North Pacific Ocean (Japan) — May 18, 1977. Epicenter 361 km NE of Kushiro, depth 56 km, 21:20 Local (1977-05-18 11:20 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (361 km NE, Japan) — 44.497, 148.347

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