M 4.6 earthquake: North Pacific Ocean (Japan) — April 16, 1975

M 4.6 earthquake: North Pacific Ocean (Japan) — April 16, 1975. Epicenter 260 km E of Sendai, depth 33 km, 01:44 Local (1975-04-15 16:44 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (260 km E, Japan) — 38.3, 144.001

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