M 4.5 earthquake: North Pacific Ocean (Japan) — April 6, 1973

M 4.5 earthquake: North Pacific Ocean (Japan) — April 6, 1973. Epicenter 280 km E of Kushiro, depth 33 km, 08:06 Local (1973-04-05 23:06 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (280 km E, Japan) — 43.513, 147.756

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