M 5.6 earthquake: North Pacific Ocean (Japan) — March 23, 1978

M 5.6 earthquake: North Pacific Ocean (Japan) — March 23, 1978. Epicenter 377 km E of Kushiro, depth 54 km, 10:36 Local (1978-03-23 00:36 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (377 km E, Japan) — 44.021, 148.819

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