M 5.4 earthquake: North Pacific Ocean (Japan) — April 10, 1977

M 5.4 earthquake: North Pacific Ocean (Japan) — April 10, 1977. Epicenter 299 km E of Kitami, depth 84 km, 17:31 Local (1977-04-10 08:31 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (299 km E, Japan) — 44.47, 147.549

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