M 4.9 earthquake: North Pacific Ocean (Japan) — March 23, 1978

M 4.9 earthquake: North Pacific Ocean (Japan) — March 23, 1978. Epicenter 454 km E of Kushiro, depth 33 km, 15:42 Local (1978-03-23 05:42 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (454 km E, Japan) — 44.103, 149.784

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